illumos/illumos-gate: usr/src/uts/common/fs/zfs/dnode.c annotate

annotate usr/src/uts/common/fs/zfs/dnode.c @ 13973:4972ab336f54

3464 zfs synctask code needs restructuring Reviewed by: Dan Kimmel <dan.kimmel@delphix.com> Reviewed by: Adam Leventhal <ahl@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Christopher Siden <christopher.siden@delphix.com> Approved by: Garrett D'Amore <garrett@damore.org>

author	Matthew Ahrens <mahrens@delphix.com>
date	Thu, 28 Feb 2013 12:44:05 -0800
parents	e3a9ae14a119
children	d7059eb1884c

rev	line source
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2 * CDDL HEADER START
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	3 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	4 * The contents of this file are subject to the terms of the
1491 bdcb30e07e7d 6389368 fat zap should use 16k blocks (with backwards compatability) ahrens parents: 1402 diff changeset	5 * Common Development and Distribution License (the "License").
bdcb30e07e7d 6389368 fat zap should use 16k blocks (with backwards compatability) ahrens parents: 1402 diff changeset	6 * You may not use this file except in compliance with the License.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	7 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	9 * or http://www.opensolaris.org/os/licensing.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	10 * See the License for the specific language governing permissions
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	11 * and limitations under the License.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	12 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	13 * When distributing Covered Code, include this CDDL HEADER in each
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	15 * If applicable, add the following below this CDDL HEADER, with the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	16 * fields enclosed by brackets "[]" replaced with your own identifying
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	17 * information: Portions Copyright [yyyy] [name of copyright owner]
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	18 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	19 * CDDL HEADER END
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	20 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	21 /*
12178 93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
13700 2889e2596bd6 2619 asynchronous destruction of ZFS file systems Christopher Siden <chris.siden@delphix.com> parents: 12684 diff changeset	23 * Copyright (c) 2012 by Delphix. All rights reserved.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	24 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	25
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	26 #include <sys/zfs_context.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	27 #include <sys/dbuf.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	28 #include <sys/dnode.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	29 #include <sys/dmu.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	30 #include <sys/dmu_impl.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	31 #include <sys/dmu_tx.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	32 #include <sys/dmu_objset.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	33 #include <sys/dsl_dir.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	34 #include <sys/dsl_dataset.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	35 #include <sys/spa.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	36 #include <sys/zio.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	37 #include <sys/dmu_zfetch.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	38
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	39 static int free_range_compar(const void node1, const void node2);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	40
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	41 static kmem_cache_t *dnode_cache;
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	42 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	43 * Define DNODE_STATS to turn on statistic gathering. By default, it is only
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	44 * turned on when DEBUG is also defined.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	45 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	46 #ifdef DEBUG
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	47 #define DNODE_STATS
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	48 #endif /* DEBUG */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	49
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	50 #ifdef DNODE_STATS
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	51 #define DNODE_STAT_ADD(stat) ((stat)++)
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	52 #else
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	53 #define DNODE_STAT_ADD(stat) /* nothing */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	54 #endif /* DNODE_STATS */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	55
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	56 static dnode_phys_t dnode_phys_zero;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	57
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	58 int zfs_default_bs = SPA_MINBLOCKSHIFT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	59 int zfs_default_ibs = DN_MAX_INDBLKSHIFT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	60
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	61 static kmem_cbrc_t dnode_move(void , void , size_t, void *);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	62
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	63 /* ARGSUSED */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	64 static int
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	65 dnode_cons(void arg, void unused, int kmflag)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	66 {
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	67 dnode_t *dn = arg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	68 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	69
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	70 rw_init(&dn->dn_struct_rwlock, NULL, RW_DEFAULT, NULL);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	71 mutex_init(&dn->dn_mtx, NULL, MUTEX_DEFAULT, NULL);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	72 mutex_init(&dn->dn_dbufs_mtx, NULL, MUTEX_DEFAULT, NULL);
8214 d7abf7c1f1c1 6747934 Some locking variables are not properly initialized or destroyed Ricardo M. Correia <Ricardo.M.Correia@Sun.COM> parents: 7754 diff changeset	73 cv_init(&dn->dn_notxholds, NULL, CV_DEFAULT, NULL);
d7abf7c1f1c1 6747934 Some locking variables are not properly initialized or destroyed Ricardo M. Correia <Ricardo.M.Correia@Sun.COM> parents: 7754 diff changeset	74
13973 4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: 13805 diff changeset	75 /*
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: 13805 diff changeset	76 * Every dbuf has a reference, and dropping a tracked reference is
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: 13805 diff changeset	77 * O(number of references), so don't track dn_holds.
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: 13805 diff changeset	78 */
4972ab336f54 3464 zfs synctask code needs restructuring Matthew Ahrens <mahrens@delphix.com> parents: 13805 diff changeset	79 refcount_create_untracked(&dn->dn_holds);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	80 refcount_create(&dn->dn_tx_holds);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	81 list_link_init(&dn->dn_link);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	82
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	83 bzero(&dn->dn_next_nblkptr[0], sizeof (dn->dn_next_nblkptr));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	84 bzero(&dn->dn_next_nlevels[0], sizeof (dn->dn_next_nlevels));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	85 bzero(&dn->dn_next_indblkshift[0], sizeof (dn->dn_next_indblkshift));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	86 bzero(&dn->dn_next_bonustype[0], sizeof (dn->dn_next_bonustype));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	87 bzero(&dn->dn_rm_spillblk[0], sizeof (dn->dn_rm_spillblk));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	88 bzero(&dn->dn_next_bonuslen[0], sizeof (dn->dn_next_bonuslen));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	89 bzero(&dn->dn_next_blksz[0], sizeof (dn->dn_next_blksz));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	90
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	91 for (i = 0; i < TXG_SIZE; i++) {
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	92 list_link_init(&dn->dn_dirty_link[i]);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	93 avl_create(&dn->dn_ranges[i], free_range_compar,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	94 sizeof (free_range_t),
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	95 offsetof(struct free_range, fr_node));
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	96 list_create(&dn->dn_dirty_records[i],
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	97 sizeof (dbuf_dirty_record_t),
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	98 offsetof(dbuf_dirty_record_t, dr_dirty_node));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	99 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	100
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	101 dn->dn_allocated_txg = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	102 dn->dn_free_txg = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	103 dn->dn_assigned_txg = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	104 dn->dn_dirtyctx = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	105 dn->dn_dirtyctx_firstset = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	106 dn->dn_bonus = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	107 dn->dn_have_spill = B_FALSE;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	108 dn->dn_zio = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	109 dn->dn_oldused = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	110 dn->dn_oldflags = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	111 dn->dn_olduid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	112 dn->dn_oldgid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	113 dn->dn_newuid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	114 dn->dn_newgid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	115 dn->dn_id_flags = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	116
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	117 dn->dn_dbufs_count = 0;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	118 list_create(&dn->dn_dbufs, sizeof (dmu_buf_impl_t),
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	119 offsetof(dmu_buf_impl_t, db_link));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	120
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	121 dn->dn_moved = 0;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	122 return (0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	123 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	124
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	125 /* ARGSUSED */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	126 static void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	127 dnode_dest(void arg, void unused)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	128 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	129 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	130 dnode_t *dn = arg;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	131
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	132 rw_destroy(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	133 mutex_destroy(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	134 mutex_destroy(&dn->dn_dbufs_mtx);
8214 d7abf7c1f1c1 6747934 Some locking variables are not properly initialized or destroyed Ricardo M. Correia <Ricardo.M.Correia@Sun.COM> parents: 7754 diff changeset	135 cv_destroy(&dn->dn_notxholds);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	136 refcount_destroy(&dn->dn_holds);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	137 refcount_destroy(&dn->dn_tx_holds);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	138 ASSERT(!list_link_active(&dn->dn_link));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	139
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	140 for (i = 0; i < TXG_SIZE; i++) {
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	141 ASSERT(!list_link_active(&dn->dn_dirty_link[i]));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	142 avl_destroy(&dn->dn_ranges[i]);
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	143 list_destroy(&dn->dn_dirty_records[i]);
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	144 ASSERT0(dn->dn_next_nblkptr[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	145 ASSERT0(dn->dn_next_nlevels[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	146 ASSERT0(dn->dn_next_indblkshift[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	147 ASSERT0(dn->dn_next_bonustype[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	148 ASSERT0(dn->dn_rm_spillblk[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	149 ASSERT0(dn->dn_next_bonuslen[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	150 ASSERT0(dn->dn_next_blksz[i]);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	151 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	152
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	153 ASSERT0(dn->dn_allocated_txg);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	154 ASSERT0(dn->dn_free_txg);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	155 ASSERT0(dn->dn_assigned_txg);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	156 ASSERT0(dn->dn_dirtyctx);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	157 ASSERT3P(dn->dn_dirtyctx_firstset, ==, NULL);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	158 ASSERT3P(dn->dn_bonus, ==, NULL);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	159 ASSERT(!dn->dn_have_spill);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	160 ASSERT3P(dn->dn_zio, ==, NULL);
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	161 ASSERT0(dn->dn_oldused);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	162 ASSERT0(dn->dn_oldflags);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	163 ASSERT0(dn->dn_olduid);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	164 ASSERT0(dn->dn_oldgid);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	165 ASSERT0(dn->dn_newuid);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	166 ASSERT0(dn->dn_newgid);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	167 ASSERT0(dn->dn_id_flags);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	168
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	169 ASSERT0(dn->dn_dbufs_count);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	170 list_destroy(&dn->dn_dbufs);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	171 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	172
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	173 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	174 dnode_init(void)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	175 {
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	176 ASSERT(dnode_cache == NULL);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	177 dnode_cache = kmem_cache_create("dnode_t",
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	178 sizeof (dnode_t),
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	179 0, dnode_cons, dnode_dest, NULL, NULL, NULL, 0);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	180 kmem_cache_set_move(dnode_cache, dnode_move);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	181 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	182
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	183 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	184 dnode_fini(void)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	185 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	186 kmem_cache_destroy(dnode_cache);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	187 dnode_cache = NULL;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	188 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	189
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	190
873 adefbfa5f42d 6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions ek110237 parents: 789 diff changeset	191 #ifdef ZFS_DEBUG
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	192 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	193 dnode_verify(dnode_t *dn)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	194 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	195 int drop_struct_lock = FALSE;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	196
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	197 ASSERT(dn->dn_phys);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	198 ASSERT(dn->dn_objset);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	199 ASSERT(dn->dn_handle->dnh_dnode == dn);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	200
13700 2889e2596bd6 2619 asynchronous destruction of ZFS file systems Christopher Siden <chris.siden@delphix.com> parents: 12684 diff changeset	201 ASSERT(DMU_OT_IS_VALID(dn->dn_phys->dn_type));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	202
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	203 if (!(zfs_flags & ZFS_DEBUG_DNODE_VERIFY))
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	204 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	205
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	206 if (!RW_WRITE_HELD(&dn->dn_struct_rwlock)) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	207 rw_enter(&dn->dn_struct_rwlock, RW_READER);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	208 drop_struct_lock = TRUE;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	209 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	210 if (dn->dn_phys->dn_type != DMU_OT_NONE \|\| dn->dn_allocated_txg != 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	211 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	212 ASSERT3U(dn->dn_indblkshift, >=, 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	213 ASSERT3U(dn->dn_indblkshift, <=, SPA_MAXBLOCKSHIFT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	214 if (dn->dn_datablkshift) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	215 ASSERT3U(dn->dn_datablkshift, >=, SPA_MINBLOCKSHIFT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	216 ASSERT3U(dn->dn_datablkshift, <=, SPA_MAXBLOCKSHIFT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	217 ASSERT3U(1<<dn->dn_datablkshift, ==, dn->dn_datablksz);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	218 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	219 ASSERT3U(dn->dn_nlevels, <=, 30);
13700 2889e2596bd6 2619 asynchronous destruction of ZFS file systems Christopher Siden <chris.siden@delphix.com> parents: 12684 diff changeset	220 ASSERT(DMU_OT_IS_VALID(dn->dn_type));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	221 ASSERT3U(dn->dn_nblkptr, >=, 1);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	222 ASSERT3U(dn->dn_nblkptr, <=, DN_MAX_NBLKPTR);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	223 ASSERT3U(dn->dn_bonuslen, <=, DN_MAX_BONUSLEN);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	224 ASSERT3U(dn->dn_datablksz, ==,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	225 dn->dn_datablkszsec << SPA_MINBLOCKSHIFT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	226 ASSERT3U(ISP2(dn->dn_datablksz), ==, dn->dn_datablkshift != 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	227 ASSERT3U((dn->dn_nblkptr - 1) * sizeof (blkptr_t) +
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	228 dn->dn_bonuslen, <=, DN_MAX_BONUSLEN);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	229 for (i = 0; i < TXG_SIZE; i++) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	230 ASSERT3U(dn->dn_next_nlevels[i], <=, dn->dn_nlevels);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	231 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	232 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	233 if (dn->dn_phys->dn_type != DMU_OT_NONE)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	234 ASSERT3U(dn->dn_phys->dn_nlevels, <=, dn->dn_nlevels);
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	235 ASSERT(DMU_OBJECT_IS_SPECIAL(dn->dn_object) \|\| dn->dn_dbuf != NULL);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	236 if (dn->dn_dbuf != NULL) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	237 ASSERT3P(dn->dn_phys, ==,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	238 (dnode_phys_t *)dn->dn_dbuf->db.db_data +
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	239 (dn->dn_object % (dn->dn_dbuf->db.db_size >> DNODE_SHIFT)));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	240 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	241 if (drop_struct_lock)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	242 rw_exit(&dn->dn_struct_rwlock);
873 adefbfa5f42d 6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions ek110237 parents: 789 diff changeset	243 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	244 #endif
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	245
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	246 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	247 dnode_byteswap(dnode_phys_t *dnp)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	248 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	249 uint64_t buf64 = (void)&dnp->dn_blkptr;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	250 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	251
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	252 if (dnp->dn_type == DMU_OT_NONE) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	253 bzero(dnp, sizeof (dnode_phys_t));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	254 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	255 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	256
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	257 dnp->dn_datablkszsec = BSWAP_16(dnp->dn_datablkszsec);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	258 dnp->dn_bonuslen = BSWAP_16(dnp->dn_bonuslen);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	259 dnp->dn_maxblkid = BSWAP_64(dnp->dn_maxblkid);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	260 dnp->dn_used = BSWAP_64(dnp->dn_used);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	261
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	262 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	263 * dn_nblkptr is only one byte, so it's OK to read it in either
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	264 * byte order. We can't read dn_bouslen.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	265 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	266 ASSERT(dnp->dn_indblkshift <= SPA_MAXBLOCKSHIFT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	267 ASSERT(dnp->dn_nblkptr <= DN_MAX_NBLKPTR);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	268 for (i = 0; i < dnp->dn_nblkptr * sizeof (blkptr_t)/8; i++)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	269 buf64[i] = BSWAP_64(buf64[i]);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	270
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	271 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	272 * OK to check dn_bonuslen for zero, because it won't matter if
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	273 * we have the wrong byte order. This is necessary because the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	274 * dnode dnode is smaller than a regular dnode.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	275 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	276 if (dnp->dn_bonuslen != 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	277 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	278 * Note that the bonus length calculated here may be
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	279 * longer than the actual bonus buffer. This is because
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	280 * we always put the bonus buffer after the last block
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	281 * pointer (instead of packing it against the end of the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	282 * dnode buffer).
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	283 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	284 int off = (dnp->dn_nblkptr-1) * sizeof (blkptr_t);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	285 size_t len = DN_MAX_BONUSLEN - off;
13700 2889e2596bd6 2619 asynchronous destruction of ZFS file systems Christopher Siden <chris.siden@delphix.com> parents: 12684 diff changeset	286 ASSERT(DMU_OT_IS_VALID(dnp->dn_bonustype));
2889e2596bd6 2619 asynchronous destruction of ZFS file systems Christopher Siden <chris.siden@delphix.com> parents: 12684 diff changeset	287 dmu_object_byteswap_t byteswap =
2889e2596bd6 2619 asynchronous destruction of ZFS file systems Christopher Siden <chris.siden@delphix.com> parents: 12684 diff changeset	288 DMU_OT_BYTESWAP(dnp->dn_bonustype);
2889e2596bd6 2619 asynchronous destruction of ZFS file systems Christopher Siden <chris.siden@delphix.com> parents: 12684 diff changeset	289 dmu_ot_byteswap[byteswap].ob_func(dnp->dn_bonus + off, len);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	290 }
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	291
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	292 /* Swap SPILL block if we have one */
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	293 if (dnp->dn_flags & DNODE_FLAG_SPILL_BLKPTR)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	294 byteswap_uint64_array(&dnp->dn_spill, sizeof (blkptr_t));
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	295
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	296 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	297
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	298 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	299 dnode_buf_byteswap(void *vbuf, size_t size)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	300 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	301 dnode_phys_t *buf = vbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	302 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	303
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	304 ASSERT3U(sizeof (dnode_phys_t), ==, (1<<DNODE_SHIFT));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	305 ASSERT((size & (sizeof (dnode_phys_t)-1)) == 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	306
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	307 size >>= DNODE_SHIFT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	308 for (i = 0; i < size; i++) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	309 dnode_byteswap(buf);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	310 buf++;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	311 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	312 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	313
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	314 static int
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	315 free_range_compar(const void node1, const void node2)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	316 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	317 const free_range_t *rp1 = node1;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	318 const free_range_t *rp2 = node2;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	319
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	320 if (rp1->fr_blkid < rp2->fr_blkid)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	321 return (-1);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	322 else if (rp1->fr_blkid > rp2->fr_blkid)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	323 return (1);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	324 else return (0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	325 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	326
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	327 void
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	328 dnode_setbonuslen(dnode_t dn, int newsize, dmu_tx_t tx)
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	329 {
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	330 ASSERT3U(refcount_count(&dn->dn_holds), >=, 1);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	331
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	332 dnode_setdirty(dn, tx);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	333 rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	334 ASSERT3U(newsize, <=, DN_MAX_BONUSLEN -
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	335 (dn->dn_nblkptr-1) * sizeof (blkptr_t));
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	336 dn->dn_bonuslen = newsize;
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	337 if (newsize == 0)
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	338 dn->dn_next_bonuslen[tx->tx_txg & TXG_MASK] = DN_ZERO_BONUSLEN;
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	339 else
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	340 dn->dn_next_bonuslen[tx->tx_txg & TXG_MASK] = dn->dn_bonuslen;
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	341 rw_exit(&dn->dn_struct_rwlock);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	342 }
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	343
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	344 void
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	345 dnode_setbonus_type(dnode_t dn, dmu_object_type_t newtype, dmu_tx_t tx)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	346 {
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	347 ASSERT3U(refcount_count(&dn->dn_holds), >=, 1);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	348 dnode_setdirty(dn, tx);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	349 rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	350 dn->dn_bonustype = newtype;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	351 dn->dn_next_bonustype[tx->tx_txg & TXG_MASK] = dn->dn_bonustype;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	352 rw_exit(&dn->dn_struct_rwlock);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	353 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	354
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	355 void
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	356 dnode_rm_spill(dnode_t dn, dmu_tx_t tx)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	357 {
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	358 ASSERT3U(refcount_count(&dn->dn_holds), >=, 1);
12178 93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	359 ASSERT(RW_WRITE_HELD(&dn->dn_struct_rwlock));
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	360 dnode_setdirty(dn, tx);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	361 dn->dn_rm_spillblk[tx->tx_txg&TXG_MASK] = DN_KILL_SPILLBLK;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	362 dn->dn_have_spill = B_FALSE;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	363 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	364
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	365 static void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	366 dnode_setdblksz(dnode_t *dn, int size)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	367 {
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	368 ASSERT0(P2PHASE(size, SPA_MINBLOCKSIZE));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	369 ASSERT3U(size, <=, SPA_MAXBLOCKSIZE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	370 ASSERT3U(size, >=, SPA_MINBLOCKSIZE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	371 ASSERT3U(size >> SPA_MINBLOCKSHIFT, <,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	372 1<<(sizeof (dn->dn_phys->dn_datablkszsec) * 8));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	373 dn->dn_datablksz = size;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	374 dn->dn_datablkszsec = size >> SPA_MINBLOCKSHIFT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	375 dn->dn_datablkshift = ISP2(size) ? highbit(size - 1) : 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	376 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	377
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	378 static dnode_t *
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9950 diff changeset	379 dnode_create(objset_t os, dnode_phys_t dnp, dmu_buf_impl_t *db,
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	380 uint64_t object, dnode_handle_t *dnh)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	381 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	382 dnode_t *dn = kmem_cache_alloc(dnode_cache, KM_SLEEP);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	383
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	384 ASSERT(!POINTER_IS_VALID(dn->dn_objset));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	385 dn->dn_moved = 0;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	386
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	387 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	388 * Defer setting dn_objset until the dnode is ready to be a candidate
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	389 * for the dnode_move() callback.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	390 */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	391 dn->dn_object = object;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	392 dn->dn_dbuf = db;
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	393 dn->dn_handle = dnh;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	394 dn->dn_phys = dnp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	395
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	396 if (dnp->dn_datablkszsec) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	397 dnode_setdblksz(dn, dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	398 } else {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	399 dn->dn_datablksz = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	400 dn->dn_datablkszsec = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	401 dn->dn_datablkshift = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	402 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	403 dn->dn_indblkshift = dnp->dn_indblkshift;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	404 dn->dn_nlevels = dnp->dn_nlevels;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	405 dn->dn_type = dnp->dn_type;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	406 dn->dn_nblkptr = dnp->dn_nblkptr;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	407 dn->dn_checksum = dnp->dn_checksum;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	408 dn->dn_compress = dnp->dn_compress;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	409 dn->dn_bonustype = dnp->dn_bonustype;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	410 dn->dn_bonuslen = dnp->dn_bonuslen;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	411 dn->dn_maxblkid = dnp->dn_maxblkid;
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	412 dn->dn_have_spill = ((dnp->dn_flags & DNODE_FLAG_SPILL_BLKPTR) != 0);
12178 93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	413 dn->dn_id_flags = 0;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	414
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	415 dmu_zfetch_init(&dn->dn_zfetch, dn);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	416
13700 2889e2596bd6 2619 asynchronous destruction of ZFS file systems Christopher Siden <chris.siden@delphix.com> parents: 12684 diff changeset	417 ASSERT(DMU_OT_IS_VALID(dn->dn_phys->dn_type));
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	418
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	419 mutex_enter(&os->os_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	420 list_insert_head(&os->os_dnodes, dn);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	421 membar_producer();
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	422 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	423 * Everything else must be valid before assigning dn_objset makes the
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	424 * dnode eligible for dnode_move().
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	425 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	426 dn->dn_objset = os;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	427 mutex_exit(&os->os_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	428
8582 df9361868dbe 6748019 ARC/L2ARC metadata accounting for arc_size Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM> parents: 8214 diff changeset	429 arc_space_consume(sizeof (dnode_t), ARC_SPACE_OTHER);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	430 return (dn);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	431 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	432
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	433 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	434 * Caller must be holding the dnode handle, which is released upon return.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	435 */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	436 static void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	437 dnode_destroy(dnode_t *dn)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	438 {
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9950 diff changeset	439 objset_t *os = dn->dn_objset;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	440
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	441 ASSERT((dn->dn_id_flags & DN_ID_NEW_EXIST) == 0);
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2445 diff changeset	442
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	443 mutex_enter(&os->os_lock);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	444 POINTER_INVALIDATE(&dn->dn_objset);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	445 list_remove(&os->os_dnodes, dn);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	446 mutex_exit(&os->os_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	447
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	448 /* the dnode can no longer move, so we can release the handle */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	449 zrl_remove(&dn->dn_handle->dnh_zrlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	450
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	451 dn->dn_allocated_txg = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	452 dn->dn_free_txg = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	453 dn->dn_assigned_txg = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	454
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	455 dn->dn_dirtyctx = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	456 if (dn->dn_dirtyctx_firstset != NULL) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	457 kmem_free(dn->dn_dirtyctx_firstset, 1);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	458 dn->dn_dirtyctx_firstset = NULL;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	459 }
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	460 if (dn->dn_bonus != NULL) {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	461 mutex_enter(&dn->dn_bonus->db_mtx);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	462 dbuf_evict(dn->dn_bonus);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	463 dn->dn_bonus = NULL;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	464 }
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	465 dn->dn_zio = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	466
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	467 dn->dn_have_spill = B_FALSE;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	468 dn->dn_oldused = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	469 dn->dn_oldflags = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	470 dn->dn_olduid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	471 dn->dn_oldgid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	472 dn->dn_newuid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	473 dn->dn_newgid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	474 dn->dn_id_flags = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	475
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	476 dmu_zfetch_rele(&dn->dn_zfetch);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	477 kmem_cache_free(dnode_cache, dn);
8582 df9361868dbe 6748019 ARC/L2ARC metadata accounting for arc_size Brendan Gregg - Sun Microsystems <Brendan.Gregg@Sun.COM> parents: 8214 diff changeset	478 arc_space_return(sizeof (dnode_t), ARC_SPACE_OTHER);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	479 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	480
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	481 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	482 dnode_allocate(dnode_t *dn, dmu_object_type_t ot, int blocksize, int ibs,
1599 b2940ec637b4 6397222 corrupt microzap object ahrens parents: 1596 diff changeset	483 dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	484 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	485 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	486
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	487 if (blocksize == 0)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	488 blocksize = 1 << zfs_default_bs;
1402 bfaffef2800c 6382360 dnode_setblksz assertion failed ahrens parents: 873 diff changeset	489 else if (blocksize > SPA_MAXBLOCKSIZE)
bfaffef2800c 6382360 dnode_setblksz assertion failed ahrens parents: 873 diff changeset	490 blocksize = SPA_MAXBLOCKSIZE;
bfaffef2800c 6382360 dnode_setblksz assertion failed ahrens parents: 873 diff changeset	491 else
bfaffef2800c 6382360 dnode_setblksz assertion failed ahrens parents: 873 diff changeset	492 blocksize = P2ROUNDUP(blocksize, SPA_MINBLOCKSIZE);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	493
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	494 if (ibs == 0)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	495 ibs = zfs_default_ibs;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	496
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	497 ibs = MIN(MAX(ibs, DN_MIN_INDBLKSHIFT), DN_MAX_INDBLKSHIFT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	498
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	499 dprintf("os=%p obj=%llu txg=%llu blocksize=%d ibs=%d\n", dn->dn_objset,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	500 dn->dn_object, tx->tx_txg, blocksize, ibs);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	501
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	502 ASSERT(dn->dn_type == DMU_OT_NONE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	503 ASSERT(bcmp(dn->dn_phys, &dnode_phys_zero, sizeof (dnode_phys_t)) == 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	504 ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	505 ASSERT(ot != DMU_OT_NONE);
13700 2889e2596bd6 2619 asynchronous destruction of ZFS file systems Christopher Siden <chris.siden@delphix.com> parents: 12684 diff changeset	506 ASSERT(DMU_OT_IS_VALID(ot));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	507 ASSERT((bonustype == DMU_OT_NONE && bonuslen == 0) \|\|
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	508 (bonustype == DMU_OT_SA && bonuslen == 0) \|\|
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	509 (bonustype != DMU_OT_NONE && bonuslen != 0));
13700 2889e2596bd6 2619 asynchronous destruction of ZFS file systems Christopher Siden <chris.siden@delphix.com> parents: 12684 diff changeset	510 ASSERT(DMU_OT_IS_VALID(bonustype));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	511 ASSERT3U(bonuslen, <=, DN_MAX_BONUSLEN);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	512 ASSERT(dn->dn_type == DMU_OT_NONE);
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	513 ASSERT0(dn->dn_maxblkid);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	514 ASSERT0(dn->dn_allocated_txg);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	515 ASSERT0(dn->dn_assigned_txg);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	516 ASSERT(refcount_is_zero(&dn->dn_tx_holds));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	517 ASSERT3U(refcount_count(&dn->dn_holds), <=, 1);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	518 ASSERT3P(list_head(&dn->dn_dbufs), ==, NULL);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	519
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	520 for (i = 0; i < TXG_SIZE; i++) {
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	521 ASSERT0(dn->dn_next_nblkptr[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	522 ASSERT0(dn->dn_next_nlevels[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	523 ASSERT0(dn->dn_next_indblkshift[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	524 ASSERT0(dn->dn_next_bonuslen[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	525 ASSERT0(dn->dn_next_bonustype[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	526 ASSERT0(dn->dn_rm_spillblk[i]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	527 ASSERT0(dn->dn_next_blksz[i]);
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	528 ASSERT(!list_link_active(&dn->dn_dirty_link[i]));
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	529 ASSERT3P(list_head(&dn->dn_dirty_records[i]), ==, NULL);
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	530 ASSERT0(avl_numnodes(&dn->dn_ranges[i]));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	531 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	532
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	533 dn->dn_type = ot;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	534 dnode_setdblksz(dn, blocksize);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	535 dn->dn_indblkshift = ibs;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	536 dn->dn_nlevels = 1;
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	537 if (bonustype == DMU_OT_SA) /* Maximize bonus space for SA */
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	538 dn->dn_nblkptr = 1;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	539 else
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	540 dn->dn_nblkptr = 1 +
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	541 ((DN_MAX_BONUSLEN - bonuslen) >> SPA_BLKPTRSHIFT);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	542 dn->dn_bonustype = bonustype;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	543 dn->dn_bonuslen = bonuslen;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	544 dn->dn_checksum = ZIO_CHECKSUM_INHERIT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	545 dn->dn_compress = ZIO_COMPRESS_INHERIT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	546 dn->dn_dirtyctx = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	547
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	548 dn->dn_free_txg = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	549 if (dn->dn_dirtyctx_firstset) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	550 kmem_free(dn->dn_dirtyctx_firstset, 1);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	551 dn->dn_dirtyctx_firstset = NULL;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	552 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	553
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	554 dn->dn_allocated_txg = tx->tx_txg;
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	555 dn->dn_id_flags = 0;
1599 b2940ec637b4 6397222 corrupt microzap object ahrens parents: 1596 diff changeset	556
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	557 dnode_setdirty(dn, tx);
1599 b2940ec637b4 6397222 corrupt microzap object ahrens parents: 1596 diff changeset	558 dn->dn_next_indblkshift[tx->tx_txg & TXG_MASK] = ibs;
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	559 dn->dn_next_bonuslen[tx->tx_txg & TXG_MASK] = dn->dn_bonuslen;
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	560 dn->dn_next_bonustype[tx->tx_txg & TXG_MASK] = dn->dn_bonustype;
1599 b2940ec637b4 6397222 corrupt microzap object ahrens parents: 1596 diff changeset	561 dn->dn_next_blksz[tx->tx_txg & TXG_MASK] = dn->dn_datablksz;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	562 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	563
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	564 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	565 dnode_reallocate(dnode_t *dn, dmu_object_type_t ot, int blocksize,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	566 dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	567 {
8986 45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	568 int nblkptr;
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	569
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	570 ASSERT3U(blocksize, >=, SPA_MINBLOCKSIZE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	571 ASSERT3U(blocksize, <=, SPA_MAXBLOCKSIZE);
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	572 ASSERT0(blocksize % SPA_MINBLOCKSIZE);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	573 ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT \|\| dmu_tx_private_ok(tx));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	574 ASSERT(tx->tx_txg != 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	575 ASSERT((bonustype == DMU_OT_NONE && bonuslen == 0) \|\|
12178 93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	576 (bonustype != DMU_OT_NONE && bonuslen != 0) \|\|
93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	577 (bonustype == DMU_OT_SA && bonuslen == 0));
13700 2889e2596bd6 2619 asynchronous destruction of ZFS file systems Christopher Siden <chris.siden@delphix.com> parents: 12684 diff changeset	578 ASSERT(DMU_OT_IS_VALID(bonustype));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	579 ASSERT3U(bonuslen, <=, DN_MAX_BONUSLEN);
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	580
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	581 /* clean up any unreferenced dbufs */
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	582 dnode_evict_dbufs(dn);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	583
12432 222dd376dd6c 6952522 elpaso panics: assertion failed: refcount_is_zero(&dn->dn_holds), file: ../../common/fs/zfs/dnode.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 12411 diff changeset	584 dn->dn_id_flags = 0;
222dd376dd6c 6952522 elpaso panics: assertion failed: refcount_is_zero(&dn->dn_holds), file: ../../common/fs/zfs/dnode.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 12411 diff changeset	585
8986 45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	586 rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	587 dnode_setdirty(dn, tx);
45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	588 if (dn->dn_datablksz != blocksize) {
45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	589 /* change blocksize */
45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	590 ASSERT(dn->dn_maxblkid == 0 &&
45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	591 (BP_IS_HOLE(&dn->dn_phys->dn_blkptr[0]) \|\|
45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	592 dnode_block_freed(dn, 0)));
45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	593 dnode_setdblksz(dn, blocksize);
45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	594 dn->dn_next_blksz[tx->tx_txg&TXG_MASK] = blocksize;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	595 }
8986 45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	596 if (dn->dn_bonuslen != bonuslen)
45c289aff7c9 6801979 zfs recv can fail with E2BIG Mark Maybee <Mark.Maybee@Sun.COM> parents: 8644 diff changeset	597 dn->dn_next_bonuslen[tx->tx_txg&TXG_MASK] = bonuslen;
12178 93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	598
93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	599 if (bonustype == DMU_OT_SA) /* Maximize bonus space for SA */
93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	600 nblkptr = 1;
93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	601 else
93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	602 nblkptr = 1 + ((DN_MAX_BONUSLEN - bonuslen) >> SPA_BLKPTRSHIFT);
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	603 if (dn->dn_bonustype != bonustype)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	604 dn->dn_next_bonustype[tx->tx_txg&TXG_MASK] = bonustype;
8644 10534c530688 6793373 assertion failed in dnode_reallocate: dn_nblkptr >= old_nblkptr Mark Maybee <Mark.Maybee@Sun.COM> parents: 8582 diff changeset	605 if (dn->dn_nblkptr != nblkptr)
10534c530688 6793373 assertion failed in dnode_reallocate: dn_nblkptr >= old_nblkptr Mark Maybee <Mark.Maybee@Sun.COM> parents: 8582 diff changeset	606 dn->dn_next_nblkptr[tx->tx_txg&TXG_MASK] = nblkptr;
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	607 if (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) {
12178 93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	608 dbuf_rm_spill(dn, tx);
93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	609 dnode_rm_spill(dn, tx);
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	610 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	611 rw_exit(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	612
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	613 /* change type */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	614 dn->dn_type = ot;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	615
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	616 /* change bonus size and type */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	617 mutex_enter(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	618 dn->dn_bonustype = bonustype;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	619 dn->dn_bonuslen = bonuslen;
8644 10534c530688 6793373 assertion failed in dnode_reallocate: dn_nblkptr >= old_nblkptr Mark Maybee <Mark.Maybee@Sun.COM> parents: 8582 diff changeset	620 dn->dn_nblkptr = nblkptr;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	621 dn->dn_checksum = ZIO_CHECKSUM_INHERIT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	622 dn->dn_compress = ZIO_COMPRESS_INHERIT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	623 ASSERT3U(dn->dn_nblkptr, <=, DN_MAX_NBLKPTR);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	624
8644 10534c530688 6793373 assertion failed in dnode_reallocate: dn_nblkptr >= old_nblkptr Mark Maybee <Mark.Maybee@Sun.COM> parents: 8582 diff changeset	625 /* fix up the bonus db_size */
10534c530688 6793373 assertion failed in dnode_reallocate: dn_nblkptr >= old_nblkptr Mark Maybee <Mark.Maybee@Sun.COM> parents: 8582 diff changeset	626 if (dn->dn_bonus) {
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	627 dn->dn_bonus->db.db_size =
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	628 DN_MAX_BONUSLEN - (dn->dn_nblkptr-1) * sizeof (blkptr_t);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	629 ASSERT(dn->dn_bonuslen <= dn->dn_bonus->db.db_size);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	630 }
3087 62df4acfd5cb 6468748 assertion failure in dnode_sync ahrens parents: 3025 diff changeset	631
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	632 dn->dn_allocated_txg = tx->tx_txg;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	633 mutex_exit(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	634 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	635
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	636 #ifdef DNODE_STATS
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	637 static struct {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	638 uint64_t dms_dnode_invalid;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	639 uint64_t dms_dnode_recheck1;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	640 uint64_t dms_dnode_recheck2;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	641 uint64_t dms_dnode_special;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	642 uint64_t dms_dnode_handle;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	643 uint64_t dms_dnode_rwlock;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	644 uint64_t dms_dnode_active;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	645 } dnode_move_stats;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	646 #endif /* DNODE_STATS */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	647
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	648 static void
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	649 dnode_move_impl(dnode_t odn, dnode_t ndn)
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	650 {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	651 int i;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	652
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	653 ASSERT(!RW_LOCK_HELD(&odn->dn_struct_rwlock));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	654 ASSERT(MUTEX_NOT_HELD(&odn->dn_mtx));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	655 ASSERT(MUTEX_NOT_HELD(&odn->dn_dbufs_mtx));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	656 ASSERT(!RW_LOCK_HELD(&odn->dn_zfetch.zf_rwlock));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	657
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	658 /* Copy fields. */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	659 ndn->dn_objset = odn->dn_objset;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	660 ndn->dn_object = odn->dn_object;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	661 ndn->dn_dbuf = odn->dn_dbuf;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	662 ndn->dn_handle = odn->dn_handle;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	663 ndn->dn_phys = odn->dn_phys;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	664 ndn->dn_type = odn->dn_type;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	665 ndn->dn_bonuslen = odn->dn_bonuslen;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	666 ndn->dn_bonustype = odn->dn_bonustype;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	667 ndn->dn_nblkptr = odn->dn_nblkptr;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	668 ndn->dn_checksum = odn->dn_checksum;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	669 ndn->dn_compress = odn->dn_compress;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	670 ndn->dn_nlevels = odn->dn_nlevels;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	671 ndn->dn_indblkshift = odn->dn_indblkshift;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	672 ndn->dn_datablkshift = odn->dn_datablkshift;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	673 ndn->dn_datablkszsec = odn->dn_datablkszsec;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	674 ndn->dn_datablksz = odn->dn_datablksz;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	675 ndn->dn_maxblkid = odn->dn_maxblkid;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	676 bcopy(&odn->dn_next_nblkptr[0], &ndn->dn_next_nblkptr[0],
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	677 sizeof (odn->dn_next_nblkptr));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	678 bcopy(&odn->dn_next_nlevels[0], &ndn->dn_next_nlevels[0],
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	679 sizeof (odn->dn_next_nlevels));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	680 bcopy(&odn->dn_next_indblkshift[0], &ndn->dn_next_indblkshift[0],
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	681 sizeof (odn->dn_next_indblkshift));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	682 bcopy(&odn->dn_next_bonustype[0], &ndn->dn_next_bonustype[0],
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	683 sizeof (odn->dn_next_bonustype));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	684 bcopy(&odn->dn_rm_spillblk[0], &ndn->dn_rm_spillblk[0],
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	685 sizeof (odn->dn_rm_spillblk));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	686 bcopy(&odn->dn_next_bonuslen[0], &ndn->dn_next_bonuslen[0],
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	687 sizeof (odn->dn_next_bonuslen));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	688 bcopy(&odn->dn_next_blksz[0], &ndn->dn_next_blksz[0],
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	689 sizeof (odn->dn_next_blksz));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	690 for (i = 0; i < TXG_SIZE; i++) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	691 list_move_tail(&ndn->dn_dirty_records[i],
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	692 &odn->dn_dirty_records[i]);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	693 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	694 bcopy(&odn->dn_ranges[0], &ndn->dn_ranges[0], sizeof (odn->dn_ranges));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	695 ndn->dn_allocated_txg = odn->dn_allocated_txg;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	696 ndn->dn_free_txg = odn->dn_free_txg;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	697 ndn->dn_assigned_txg = odn->dn_assigned_txg;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	698 ndn->dn_dirtyctx = odn->dn_dirtyctx;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	699 ndn->dn_dirtyctx_firstset = odn->dn_dirtyctx_firstset;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	700 ASSERT(refcount_count(&odn->dn_tx_holds) == 0);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	701 refcount_transfer(&ndn->dn_holds, &odn->dn_holds);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	702 ASSERT(list_is_empty(&ndn->dn_dbufs));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	703 list_move_tail(&ndn->dn_dbufs, &odn->dn_dbufs);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	704 ndn->dn_dbufs_count = odn->dn_dbufs_count;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	705 ndn->dn_bonus = odn->dn_bonus;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	706 ndn->dn_have_spill = odn->dn_have_spill;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	707 ndn->dn_zio = odn->dn_zio;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	708 ndn->dn_oldused = odn->dn_oldused;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	709 ndn->dn_oldflags = odn->dn_oldflags;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	710 ndn->dn_olduid = odn->dn_olduid;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	711 ndn->dn_oldgid = odn->dn_oldgid;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	712 ndn->dn_newuid = odn->dn_newuid;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	713 ndn->dn_newgid = odn->dn_newgid;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	714 ndn->dn_id_flags = odn->dn_id_flags;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	715 dmu_zfetch_init(&ndn->dn_zfetch, NULL);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	716 list_move_tail(&ndn->dn_zfetch.zf_stream, &odn->dn_zfetch.zf_stream);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	717 ndn->dn_zfetch.zf_dnode = odn->dn_zfetch.zf_dnode;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	718 ndn->dn_zfetch.zf_stream_cnt = odn->dn_zfetch.zf_stream_cnt;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	719 ndn->dn_zfetch.zf_alloc_fail = odn->dn_zfetch.zf_alloc_fail;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	720
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	721 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	722 * Update back pointers. Updating the handle fixes the back pointer of
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	723 * every descendant dbuf as well as the bonus dbuf.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	724 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	725 ASSERT(ndn->dn_handle->dnh_dnode == odn);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	726 ndn->dn_handle->dnh_dnode = ndn;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	727 if (ndn->dn_zfetch.zf_dnode == odn) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	728 ndn->dn_zfetch.zf_dnode = ndn;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	729 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	730
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	731 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	732 * Invalidate the original dnode by clearing all of its back pointers.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	733 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	734 odn->dn_dbuf = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	735 odn->dn_handle = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	736 list_create(&odn->dn_dbufs, sizeof (dmu_buf_impl_t),
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	737 offsetof(dmu_buf_impl_t, db_link));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	738 odn->dn_dbufs_count = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	739 odn->dn_bonus = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	740 odn->dn_zfetch.zf_dnode = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	741
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	742 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	743 * Set the low bit of the objset pointer to ensure that dnode_move()
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	744 * recognizes the dnode as invalid in any subsequent callback.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	745 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	746 POINTER_INVALIDATE(&odn->dn_objset);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	747
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	748 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	749 * Satisfy the destructor.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	750 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	751 for (i = 0; i < TXG_SIZE; i++) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	752 list_create(&odn->dn_dirty_records[i],
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	753 sizeof (dbuf_dirty_record_t),
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	754 offsetof(dbuf_dirty_record_t, dr_dirty_node));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	755 odn->dn_ranges[i].avl_root = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	756 odn->dn_ranges[i].avl_numnodes = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	757 odn->dn_next_nlevels[i] = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	758 odn->dn_next_indblkshift[i] = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	759 odn->dn_next_bonustype[i] = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	760 odn->dn_rm_spillblk[i] = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	761 odn->dn_next_bonuslen[i] = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	762 odn->dn_next_blksz[i] = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	763 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	764 odn->dn_allocated_txg = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	765 odn->dn_free_txg = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	766 odn->dn_assigned_txg = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	767 odn->dn_dirtyctx = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	768 odn->dn_dirtyctx_firstset = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	769 odn->dn_have_spill = B_FALSE;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	770 odn->dn_zio = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	771 odn->dn_oldused = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	772 odn->dn_oldflags = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	773 odn->dn_olduid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	774 odn->dn_oldgid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	775 odn->dn_newuid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	776 odn->dn_newgid = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	777 odn->dn_id_flags = 0;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	778
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	779 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	780 * Mark the dnode.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	781 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	782 ndn->dn_moved = 1;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	783 odn->dn_moved = (uint8_t)-1;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	784 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	785
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	786 #ifdef _KERNEL
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	787 /ARGSUSED/
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	788 static kmem_cbrc_t
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	789 dnode_move(void buf, void newbuf, size_t size, void *arg)
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	790 {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	791 dnode_t odn = buf, ndn = newbuf;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	792 objset_t *os;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	793 int64_t refcount;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	794 uint32_t dbufs;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	795
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	796 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	797 * The dnode is on the objset's list of known dnodes if the objset
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	798 * pointer is valid. We set the low bit of the objset pointer when
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	799 * freeing the dnode to invalidate it, and the memory patterns written
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	800 * by kmem (baddcafe and deadbeef) set at least one of the two low bits.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	801 * A newly created dnode sets the objset pointer last of all to indicate
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	802 * that the dnode is known and in a valid state to be moved by this
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	803 * function.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	804 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	805 os = odn->dn_objset;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	806 if (!POINTER_IS_VALID(os)) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	807 DNODE_STAT_ADD(dnode_move_stats.dms_dnode_invalid);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	808 return (KMEM_CBRC_DONT_KNOW);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	809 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	810
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	811 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	812 * Ensure that the objset does not go away during the move.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	813 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	814 rw_enter(&os_lock, RW_WRITER);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	815 if (os != odn->dn_objset) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	816 rw_exit(&os_lock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	817 DNODE_STAT_ADD(dnode_move_stats.dms_dnode_recheck1);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	818 return (KMEM_CBRC_DONT_KNOW);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	819 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	820
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	821 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	822 * If the dnode is still valid, then so is the objset. We know that no
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	823 * valid objset can be freed while we hold os_lock, so we can safely
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	824 * ensure that the objset remains in use.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	825 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	826 mutex_enter(&os->os_lock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	827
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	828 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	829 * Recheck the objset pointer in case the dnode was removed just before
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	830 * acquiring the lock.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	831 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	832 if (os != odn->dn_objset) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	833 mutex_exit(&os->os_lock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	834 rw_exit(&os_lock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	835 DNODE_STAT_ADD(dnode_move_stats.dms_dnode_recheck2);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	836 return (KMEM_CBRC_DONT_KNOW);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	837 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	838
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	839 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	840 * At this point we know that as long as we hold os->os_lock, the dnode
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	841 * cannot be freed and fields within the dnode can be safely accessed.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	842 * The objset listing this dnode cannot go away as long as this dnode is
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	843 * on its list.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	844 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	845 rw_exit(&os_lock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	846 if (DMU_OBJECT_IS_SPECIAL(odn->dn_object)) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	847 mutex_exit(&os->os_lock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	848 DNODE_STAT_ADD(dnode_move_stats.dms_dnode_special);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	849 return (KMEM_CBRC_NO);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	850 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	851 ASSERT(odn->dn_dbuf != NULL); /* only "special" dnodes have no parent */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	852
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	853 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	854 * Lock the dnode handle to prevent the dnode from obtaining any new
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	855 * holds. This also prevents the descendant dbufs and the bonus dbuf
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	856 * from accessing the dnode, so that we can discount their holds. The
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	857 * handle is safe to access because we know that while the dnode cannot
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	858 * go away, neither can its handle. Once we hold dnh_zrlock, we can
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	859 * safely move any dnode referenced only by dbufs.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	860 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	861 if (!zrl_tryenter(&odn->dn_handle->dnh_zrlock)) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	862 mutex_exit(&os->os_lock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	863 DNODE_STAT_ADD(dnode_move_stats.dms_dnode_handle);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	864 return (KMEM_CBRC_LATER);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	865 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	866
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	867 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	868 * Ensure a consistent view of the dnode's holds and the dnode's dbufs.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	869 * We need to guarantee that there is a hold for every dbuf in order to
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	870 * determine whether the dnode is actively referenced. Falsely matching
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	871 * a dbuf to an active hold would lead to an unsafe move. It's possible
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	872 * that a thread already having an active dnode hold is about to add a
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	873 * dbuf, and we can't compare hold and dbuf counts while the add is in
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	874 * progress.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	875 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	876 if (!rw_tryenter(&odn->dn_struct_rwlock, RW_WRITER)) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	877 zrl_exit(&odn->dn_handle->dnh_zrlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	878 mutex_exit(&os->os_lock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	879 DNODE_STAT_ADD(dnode_move_stats.dms_dnode_rwlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	880 return (KMEM_CBRC_LATER);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	881 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	882
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	883 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	884 * A dbuf may be removed (evicted) without an active dnode hold. In that
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	885 * case, the dbuf count is decremented under the handle lock before the
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	886 * dbuf's hold is released. This order ensures that if we count the hold
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	887 * after the dbuf is removed but before its hold is released, we will
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	888 * treat the unmatched hold as active and exit safely. If we count the
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	889 * hold before the dbuf is removed, the hold is discounted, and the
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	890 * removal is blocked until the move completes.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	891 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	892 refcount = refcount_count(&odn->dn_holds);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	893 ASSERT(refcount >= 0);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	894 dbufs = odn->dn_dbufs_count;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	895
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	896 /* We can't have more dbufs than dnode holds. */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	897 ASSERT3U(dbufs, <=, refcount);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	898 DTRACE_PROBE3(dnode__move, dnode_t *, odn, int64_t, refcount,
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	899 uint32_t, dbufs);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	900
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	901 if (refcount > dbufs) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	902 rw_exit(&odn->dn_struct_rwlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	903 zrl_exit(&odn->dn_handle->dnh_zrlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	904 mutex_exit(&os->os_lock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	905 DNODE_STAT_ADD(dnode_move_stats.dms_dnode_active);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	906 return (KMEM_CBRC_LATER);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	907 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	908
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	909 rw_exit(&odn->dn_struct_rwlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	910
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	911 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	912 * At this point we know that anyone with a hold on the dnode is not
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	913 * actively referencing it. The dnode is known and in a valid state to
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	914 * move. We're holding the locks needed to execute the critical section.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	915 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	916 dnode_move_impl(odn, ndn);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	917
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	918 list_link_replace(&odn->dn_link, &ndn->dn_link);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	919 /* If the dnode was safe to move, the refcount cannot have changed. */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	920 ASSERT(refcount == refcount_count(&ndn->dn_holds));
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	921 ASSERT(dbufs == ndn->dn_dbufs_count);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	922 zrl_exit(&ndn->dn_handle->dnh_zrlock); /* handle has moved */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	923 mutex_exit(&os->os_lock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	924
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	925 return (KMEM_CBRC_YES);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	926 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	927 #endif /* _KERNEL */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	928
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	929 void
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	930 dnode_special_close(dnode_handle_t *dnh)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	931 {
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	932 dnode_t *dn = dnh->dnh_dnode;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	933
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	934 /*
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	935 * Wait for final references to the dnode to clear. This can
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	936 * only happen if the arc is asyncronously evicting state that
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	937 * has a hold on this dnode while we are trying to evict this
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	938 * dnode.
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	939 */
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	940 while (refcount_count(&dn->dn_holds) > 0)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	941 delay(1);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	942 zrl_add(&dnh->dnh_zrlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	943 dnode_destroy(dn); /* implicit zrl_remove() */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	944 zrl_destroy(&dnh->dnh_zrlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	945 dnh->dnh_dnode = NULL;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	946 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	947
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	948 dnode_t *
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	949 dnode_special_open(objset_t os, dnode_phys_t dnp, uint64_t object,
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	950 dnode_handle_t *dnh)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	951 {
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	952 dnode_t *dn = dnode_create(os, dnp, NULL, object, dnh);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	953 dnh->dnh_dnode = dn;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	954 zrl_init(&dnh->dnh_zrlock);
873 adefbfa5f42d 6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions ek110237 parents: 789 diff changeset	955 DNODE_VERIFY(dn);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	956 return (dn);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	957 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	958
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	959 static void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	960 dnode_buf_pageout(dmu_buf_t db, void arg)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	961 {
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	962 dnode_children_t *children_dnodes = arg;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	963 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	964 int epb = db->db_size >> DNODE_SHIFT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	965
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	966 ASSERT(epb == children_dnodes->dnc_count);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	967
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	968 for (i = 0; i < epb; i++) {
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	969 dnode_handle_t *dnh = &children_dnodes->dnc_children[i];
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	970 dnode_t *dn;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	971
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	972 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	973 * The dnode handle lock guards against the dnode moving to
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	974 * another valid address, so there is no need here to guard
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	975 * against changes to or from NULL.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	976 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	977 if (dnh->dnh_dnode == NULL) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	978 zrl_destroy(&dnh->dnh_zrlock);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	979 continue;
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	980 }
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	981
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	982 zrl_add(&dnh->dnh_zrlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	983 dn = dnh->dnh_dnode;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	984 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	985 * If there are holds on this dnode, then there should
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	986 * be holds on the dnode's containing dbuf as well; thus
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	987 * it wouldn't be eligible for eviction and this function
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	988 * would not have been called.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	989 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	990 ASSERT(refcount_is_zero(&dn->dn_holds));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	991 ASSERT(refcount_is_zero(&dn->dn_tx_holds));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	992
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	993 dnode_destroy(dn); /* implicit zrl_remove() */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	994 zrl_destroy(&dnh->dnh_zrlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	995 dnh->dnh_dnode = NULL;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	996 }
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	997 kmem_free(children_dnodes, sizeof (dnode_children_t) +
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	998 (epb - 1) * sizeof (dnode_handle_t));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	999 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1000
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1001 /*
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1002 * errors:
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1003 * EINVAL - invalid object number.
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1004 * EIO - i/o error.
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1005 * succeeds even for free dnodes.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1006 */
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1007 int
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9950 diff changeset	1008 dnode_hold_impl(objset_t *os, uint64_t object, int flag,
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1009 void tag, dnode_t *dnp)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1010 {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1011 int epb, idx, err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1012 int drop_struct_lock = FALSE;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1013 int type;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1014 uint64_t blk;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1015 dnode_t mdn, dn;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1016 dmu_buf_impl_t *db;
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1017 dnode_children_t *children_dnodes;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1018 dnode_handle_t *dnh;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1019
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7385 diff changeset	1020 /*
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7385 diff changeset	1021 * If you are holding the spa config lock as writer, you shouldn't
11958 575ffe1e978d 6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror George Wilson <George.Wilson@Sun.COM> parents: 11935 diff changeset	1022 * be asking the DMU to do anything unless it's the root pool
575ffe1e978d 6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror George Wilson <George.Wilson@Sun.COM> parents: 11935 diff changeset	1023 * which may require us to read from the root filesystem while
575ffe1e978d 6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror George Wilson <George.Wilson@Sun.COM> parents: 11935 diff changeset	1024 * holding some (not all) of the locks as writer.
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7385 diff changeset	1025 */
11958 575ffe1e978d 6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror George Wilson <George.Wilson@Sun.COM> parents: 11935 diff changeset	1026 ASSERT(spa_config_held(os->os_spa, SCL_ALL, RW_WRITER) == 0 \|\|
575ffe1e978d 6923585 deadlock while booting OpenSolaris build 132 from mirrored rpool with removed submirror George Wilson <George.Wilson@Sun.COM> parents: 11935 diff changeset	1027 (spa_is_root(os->os_spa) &&
12586 b118bbd65be9 6494473 ZFS needs a way to slow down resilvering George Wilson <George.Wilson@Sun.COM> parents: 12432 diff changeset	1028 spa_config_held(os->os_spa, SCL_STATE, RW_WRITER)));
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7385 diff changeset	1029
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1030 if (object == DMU_USERUSED_OBJECT \|\| object == DMU_GROUPUSED_OBJECT) {
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1031 dn = (object == DMU_USERUSED_OBJECT) ?
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1032 DMU_USERUSED_DNODE(os) : DMU_GROUPUSED_DNODE(os);
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1033 if (dn == NULL)
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1034 return (ENOENT);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1035 type = dn->dn_type;
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1036 if ((flag & DNODE_MUST_BE_ALLOCATED) && type == DMU_OT_NONE)
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1037 return (ENOENT);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1038 if ((flag & DNODE_MUST_BE_FREE) && type != DMU_OT_NONE)
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1039 return (EEXIST);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1040 DNODE_VERIFY(dn);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1041 (void) refcount_add(&dn->dn_holds, tag);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1042 *dnp = dn;
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1043 return (0);
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1044 }
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1045
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1046 if (object == 0 \|\| object >= DN_MAX_OBJECT)
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1047 return (EINVAL);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1048
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1049 mdn = DMU_META_DNODE(os);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1050 ASSERT(mdn->dn_object == DMU_META_DNODE_OBJECT);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1051
873 adefbfa5f42d 6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions ek110237 parents: 789 diff changeset	1052 DNODE_VERIFY(mdn);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1053
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1054 if (!RW_WRITE_HELD(&mdn->dn_struct_rwlock)) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1055 rw_enter(&mdn->dn_struct_rwlock, RW_READER);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1056 drop_struct_lock = TRUE;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1057 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1058
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1059 blk = dbuf_whichblock(mdn, object * sizeof (dnode_phys_t));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1060
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1061 db = dbuf_hold(mdn, blk, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1062 if (drop_struct_lock)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1063 rw_exit(&mdn->dn_struct_rwlock);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1064 if (db == NULL)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1065 return (EIO);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1066 err = dbuf_read(db, NULL, DB_RF_CANFAIL);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1067 if (err) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1068 dbuf_rele(db, FTAG);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1069 return (err);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1070 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1071
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1072 ASSERT3U(db->db.db_size, >=, 1<<DNODE_SHIFT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1073 epb = db->db.db_size >> DNODE_SHIFT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1074
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1075 idx = object & (epb-1);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1076
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1077 ASSERT(DB_DNODE(db)->dn_type == DMU_OT_DNODE);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1078 children_dnodes = dmu_buf_get_user(&db->db);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1079 if (children_dnodes == NULL) {
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1080 int i;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1081 dnode_children_t *winner;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1082 children_dnodes = kmem_alloc(sizeof (dnode_children_t) +
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1083 (epb - 1) * sizeof (dnode_handle_t), KM_SLEEP);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1084 children_dnodes->dnc_count = epb;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1085 dnh = &children_dnodes->dnc_children[0];
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1086 for (i = 0; i < epb; i++) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1087 zrl_init(&dnh[i].dnh_zrlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1088 dnh[i].dnh_dnode = NULL;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1089 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1090 if (winner = dmu_buf_set_user(&db->db, children_dnodes, NULL,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1091 dnode_buf_pageout)) {
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1092 kmem_free(children_dnodes, sizeof (dnode_children_t) +
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1093 (epb - 1) * sizeof (dnode_handle_t));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1094 children_dnodes = winner;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1095 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1096 }
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1097 ASSERT(children_dnodes->dnc_count == epb);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1098
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1099 dnh = &children_dnodes->dnc_children[idx];
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1100 zrl_add(&dnh->dnh_zrlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1101 if ((dn = dnh->dnh_dnode) == NULL) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1102 dnode_phys_t phys = (dnode_phys_t )db->db.db_data+idx;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1103 dnode_t *winner;
4309 3dfde0f4662d 6542676 ARC needs to track meta-data memory overhead maybee parents: 3882 diff changeset	1104
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1105 dn = dnode_create(os, phys, db, object, dnh);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1106 winner = atomic_cas_ptr(&dnh->dnh_dnode, NULL, dn);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1107 if (winner != NULL) {
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1108 zrl_add(&dnh->dnh_zrlock);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1109 dnode_destroy(dn); /* implicit zrl_remove() */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1110 dn = winner;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1111 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1112 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1113
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1114 mutex_enter(&dn->dn_mtx);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1115 type = dn->dn_type;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1116 if (dn->dn_free_txg \|\|
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1117 ((flag & DNODE_MUST_BE_ALLOCATED) && type == DMU_OT_NONE) \|\|
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1118 ((flag & DNODE_MUST_BE_FREE) &&
12432 222dd376dd6c 6952522 elpaso panics: assertion failed: refcount_is_zero(&dn->dn_holds), file: ../../common/fs/zfs/dnode.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 12411 diff changeset	1119 (type != DMU_OT_NONE \|\| !refcount_is_zero(&dn->dn_holds)))) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1120 mutex_exit(&dn->dn_mtx);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1121 zrl_remove(&dnh->dnh_zrlock);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1122 dbuf_rele(db, FTAG);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1123 return (type == DMU_OT_NONE ? ENOENT : EEXIST);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1124 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1125 mutex_exit(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1126
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1127 if (refcount_add(&dn->dn_holds, tag) == 1)
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1128 dbuf_add_ref(db, dnh);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1129 /* Now we can rely on the hold to prevent the dnode from moving. */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1130 zrl_remove(&dnh->dnh_zrlock);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1131
873 adefbfa5f42d 6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions ek110237 parents: 789 diff changeset	1132 DNODE_VERIFY(dn);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1133 ASSERT3P(dn->dn_dbuf, ==, db);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1134 ASSERT3U(dn->dn_object, ==, object);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1135 dbuf_rele(db, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1136
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1137 *dnp = dn;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1138 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1139 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1140
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1141 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1142 * Return held dnode if the object is allocated, NULL if not.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1143 */
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1144 int
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9950 diff changeset	1145 dnode_hold(objset_t os, uint64_t object, void tag, dnode_t **dnp)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1146 {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1147 return (dnode_hold_impl(os, object, DNODE_MUST_BE_ALLOCATED, tag, dnp));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1148 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1149
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1150 /*
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1151 * Can only add a reference if there is already at least one
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1152 * reference on the dnode. Returns FALSE if unable to add a
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1153 * new reference.
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1154 */
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1155 boolean_t
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1156 dnode_add_ref(dnode_t dn, void tag)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1157 {
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1158 mutex_enter(&dn->dn_mtx);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1159 if (refcount_is_zero(&dn->dn_holds)) {
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1160 mutex_exit(&dn->dn_mtx);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1161 return (FALSE);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1162 }
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1163 VERIFY(1 < refcount_add(&dn->dn_holds, tag));
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1164 mutex_exit(&dn->dn_mtx);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1165 return (TRUE);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1166 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1167
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1168 void
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1169 dnode_rele(dnode_t dn, void tag)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1170 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1171 uint64_t refs;
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1172 /* Get while the hold prevents the dnode from moving. */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1173 dmu_buf_impl_t *db = dn->dn_dbuf;
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1174 dnode_handle_t *dnh = dn->dn_handle;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1175
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1176 mutex_enter(&dn->dn_mtx);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1177 refs = refcount_remove(&dn->dn_holds, tag);
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1178 mutex_exit(&dn->dn_mtx);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1179
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1180 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1181 * It's unsafe to release the last hold on a dnode by dnode_rele() or
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1182 * indirectly by dbuf_rele() while relying on the dnode handle to
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1183 * prevent the dnode from moving, since releasing the last hold could
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1184 * result in the dnode's parent dbuf evicting its dnode handles. For
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1185 * that reason anyone calling dnode_rele() or dbuf_rele() without some
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1186 * other direct or indirect hold on the dnode must first drop the dnode
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1187 * handle.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1188 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1189 ASSERT(refs > 0 \|\| dnh->dnh_zrlock.zr_owner != curthread);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1190
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1191 /* NOTE: the DNODE_DNODE does not have a dn_dbuf */
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1192 if (refs == 0 && db != NULL) {
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1193 /*
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1194 * Another thread could add a hold to the dnode handle in
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1195 * dnode_hold_impl() while holding the parent dbuf. Since the
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1196 * hold on the parent dbuf prevents the handle from being
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1197 * destroyed, the hold on the handle is OK. We can't yet assert
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1198 * that the handle has zero references, but that will be
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1199 * asserted anyway when the handle gets destroyed.
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1200 */
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1201 dbuf_rele(db, dnh);
397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1202 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1203 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1204
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1205 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1206 dnode_setdirty(dnode_t dn, dmu_tx_t tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1207 {
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9950 diff changeset	1208 objset_t *os = dn->dn_objset;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1209 uint64_t txg = tx->tx_txg;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1210
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1211 if (DMU_OBJECT_IS_SPECIAL(dn->dn_object)) {
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1212 dsl_dataset_dirty(os->os_dsl_dataset, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1213 return;
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1214 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1215
873 adefbfa5f42d 6347448 non ZFS_DEBUG kernels shouldn't call empty verify functions ek110237 parents: 789 diff changeset	1216 DNODE_VERIFY(dn);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1217
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1218 #ifdef ZFS_DEBUG
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1219 mutex_enter(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1220 ASSERT(dn->dn_phys->dn_type \|\| dn->dn_allocated_txg);
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1221 ASSERT(dn->dn_free_txg == 0 \|\| dn->dn_free_txg >= txg);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1222 mutex_exit(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1223 #endif
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1224
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1225 /*
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1226 * Determine old uid/gid when necessary
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1227 */
12178 93ec1371f750 6939983 assertion failed: zap_count(os, DMU_USERUSED_OBJECT, &count) != 0\|\|count == 0, in dsl_dataset.c Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11958 diff changeset	1228 dmu_objset_userquota_get_ids(dn, B_TRUE, tx);
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1229
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1230 mutex_enter(&os->os_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1231
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1232 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1233 * If we are already marked dirty, we're done.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1234 */
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1235 if (list_link_active(&dn->dn_dirty_link[txg & TXG_MASK])) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1236 mutex_exit(&os->os_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1237 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1238 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1239
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1240 ASSERT(!refcount_is_zero(&dn->dn_holds) \|\| list_head(&dn->dn_dbufs));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1241 ASSERT(dn->dn_datablksz != 0);
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	1242 ASSERT0(dn->dn_next_bonuslen[txg&TXG_MASK]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	1243 ASSERT0(dn->dn_next_blksz[txg&TXG_MASK]);
e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	1244 ASSERT0(dn->dn_next_bonustype[txg&TXG_MASK]);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1245
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1246 dprintf_ds(os->os_dsl_dataset, "obj=%llu txg=%llu\n",
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1247 dn->dn_object, txg);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1248
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1249 if (dn->dn_free_txg > 0 && dn->dn_free_txg <= txg) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1250 list_insert_tail(&os->os_free_dnodes[txg&TXG_MASK], dn);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1251 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1252 list_insert_tail(&os->os_dirty_dnodes[txg&TXG_MASK], dn);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1253 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1254
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1255 mutex_exit(&os->os_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1256
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1257 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1258 * The dnode maintains a hold on its containing dbuf as
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1259 * long as there are holds on it. Each instantiated child
12684 397e44ebb8a9 6710343 dnode cache should register a dnode_move() callback to limit fragmentation Tom Erickson <Tom.Erickson@Sun.COM> parents: 12586 diff changeset	1260 * dbuf maintains a hold on the dnode. When the last child
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1261 * drops its hold, the dnode will drop its hold on the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1262 * containing dbuf. We add a "dirty hold" here so that the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1263 * dnode will hang around after we finish processing its
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1264 * children.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1265 */
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4577 diff changeset	1266 VERIFY(dnode_add_ref(dn, (void *)(uintptr_t)tx->tx_txg));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1267
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1268 (void) dbuf_dirty(dn->dn_dbuf, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1269
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1270 dsl_dataset_dirty(os->os_dsl_dataset, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1271 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1272
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1273 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1274 dnode_free(dnode_t dn, dmu_tx_t tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1275 {
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1276 int txgoff = tx->tx_txg & TXG_MASK;
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1277
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1278 dprintf("dn=%p txg=%llu\n", dn, tx->tx_txg);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1279
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1280 /* we should be the only holder... hopefully */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1281 /* ASSERT3U(refcount_count(&dn->dn_holds), ==, 1); */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1282
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1283 mutex_enter(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1284 if (dn->dn_type == DMU_OT_NONE \|\| dn->dn_free_txg) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1285 mutex_exit(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1286 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1287 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1288 dn->dn_free_txg = tx->tx_txg;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1289 mutex_exit(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1290
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1291 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1292 * If the dnode is already dirty, it needs to be moved from
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1293 * the dirty list to the free list.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1294 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1295 mutex_enter(&dn->dn_objset->os_lock);
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1296 if (list_link_active(&dn->dn_dirty_link[txgoff])) {
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1297 list_remove(&dn->dn_objset->os_dirty_dnodes[txgoff], dn);
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1298 list_insert_tail(&dn->dn_objset->os_free_dnodes[txgoff], dn);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1299 mutex_exit(&dn->dn_objset->os_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1300 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1301 mutex_exit(&dn->dn_objset->os_lock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1302 dnode_setdirty(dn, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1303 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1304 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1305
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1306 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1307 * Try to change the block size for the indicated dnode. This can only
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1308 * succeed if there are no blocks allocated or dirty beyond first block
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1309 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1310 int
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1311 dnode_set_blksz(dnode_t dn, uint64_t size, int ibs, dmu_tx_t tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1312 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1313 dmu_buf_impl_t db, db_next;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1314 int err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1315
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1316 if (size == 0)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1317 size = SPA_MINBLOCKSIZE;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1318 if (size > SPA_MAXBLOCKSIZE)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1319 size = SPA_MAXBLOCKSIZE;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1320 else
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1321 size = P2ROUNDUP(size, SPA_MINBLOCKSIZE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1322
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1323 if (ibs == dn->dn_indblkshift)
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1324 ibs = 0;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1325
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1326 if (size >> SPA_MINBLOCKSHIFT == dn->dn_datablkszsec && ibs == 0)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1327 return (0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1328
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1329 rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1330
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1331 /* Check for any allocated blocks beyond the first */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1332 if (dn->dn_phys->dn_maxblkid != 0)
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1333 goto fail;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1334
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1335 mutex_enter(&dn->dn_dbufs_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1336 for (db = list_head(&dn->dn_dbufs); db; db = db_next) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1337 db_next = list_next(&dn->dn_dbufs, db);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1338
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1339 if (db->db_blkid != 0 && db->db_blkid != DMU_BONUS_BLKID &&
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1340 db->db_blkid != DMU_SPILL_BLKID) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1341 mutex_exit(&dn->dn_dbufs_mtx);
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1342 goto fail;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1343 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1344 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1345 mutex_exit(&dn->dn_dbufs_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1346
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1347 if (ibs && dn->dn_nlevels != 1)
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1348 goto fail;
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1349
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1350 /* resize the old block */
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1351 err = dbuf_hold_impl(dn, 0, 0, TRUE, FTAG, &db);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1352 if (err == 0)
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1353 dbuf_new_size(db, size, tx);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1354 else if (err != ENOENT)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1355 goto fail;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1356
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1357 dnode_setdblksz(dn, size);
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1358 dnode_setdirty(dn, tx);
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1359 dn->dn_next_blksz[tx->tx_txg&TXG_MASK] = size;
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1360 if (ibs) {
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1361 dn->dn_indblkshift = ibs;
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1362 dn->dn_next_indblkshift[tx->tx_txg&TXG_MASK] = ibs;
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1363 }
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1364 /* rele after we have fixed the blocksize in the dnode */
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1365 if (db)
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1366 dbuf_rele(db, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1367
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1368 rw_exit(&dn->dn_struct_rwlock);
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1369 return (0);
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1370
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1371 fail:
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1372 rw_exit(&dn->dn_struct_rwlock);
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1373 return (ENOTSUP);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1374 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1375
7332 396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1376 /* read-holding callers must not rely on the lock being continuously held */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1377 void
7332 396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1378 dnode_new_blkid(dnode_t dn, uint64_t blkid, dmu_tx_t tx, boolean_t have_read)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1379 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1380 uint64_t txgoff = tx->tx_txg & TXG_MASK;
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1381 int epbs, new_nlevels;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1382 uint64_t sz;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1383
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1384 ASSERT(blkid != DMU_BONUS_BLKID);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1385
7332 396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1386 ASSERT(have_read ?
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1387 RW_READ_HELD(&dn->dn_struct_rwlock) :
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1388 RW_WRITE_HELD(&dn->dn_struct_rwlock));
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1389
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1390 /*
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1391 * if we have a read-lock, check to see if we need to do any work
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1392 * before upgrading to a write-lock.
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1393 */
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1394 if (have_read) {
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1395 if (blkid <= dn->dn_maxblkid)
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1396 return;
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1397
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1398 if (!rw_tryupgrade(&dn->dn_struct_rwlock)) {
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1399 rw_exit(&dn->dn_struct_rwlock);
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1400 rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1401 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1402 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1403
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1404 if (blkid <= dn->dn_maxblkid)
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1405 goto out;
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1406
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1407 dn->dn_maxblkid = blkid;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1408
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1409 /*
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1410 * Compute the number of levels necessary to support the new maxblkid.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1411 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1412 new_nlevels = 1;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1413 epbs = dn->dn_indblkshift - SPA_BLKPTRSHIFT;
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1414 for (sz = dn->dn_nblkptr;
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1415 sz <= blkid && sz >= dn->dn_nblkptr; sz <<= epbs)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1416 new_nlevels++;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1417
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1418 if (new_nlevels > dn->dn_nlevels) {
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1419 int old_nlevels = dn->dn_nlevels;
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1420 dmu_buf_impl_t *db;
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1421 list_t *list;
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1422 dbuf_dirty_record_t new, dr, *dr_next;
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1423
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1424 dn->dn_nlevels = new_nlevels;
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1425
2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1426 ASSERT3U(new_nlevels, >, dn->dn_next_nlevels[txgoff]);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1427 dn->dn_next_nlevels[txgoff] = new_nlevels;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1428
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1429 /* dirty the left indirects */
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1430 db = dbuf_hold_level(dn, old_nlevels, 0, FTAG);
12411 3e9af067a727 6911391 panic in dmu_tx_count_write() John Harres <John.Harres@Sun.COM> parents: 12178 diff changeset	1431 ASSERT(db != NULL);
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1432 new = dbuf_dirty(db, tx);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1433 dbuf_rele(db, FTAG);
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1434
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1435 /* transfer the dirty records to the new indirect */
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1436 mutex_enter(&dn->dn_mtx);
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1437 mutex_enter(&new->dt.di.dr_mtx);
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1438 list = &dn->dn_dirty_records[txgoff];
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1439 for (dr = list_head(list); dr; dr = dr_next) {
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1440 dr_next = list_next(&dn->dn_dirty_records[txgoff], dr);
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1441 if (dr->dr_dbuf->db_level != new_nlevels-1 &&
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1442 dr->dr_dbuf->db_blkid != DMU_BONUS_BLKID &&
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1443 dr->dr_dbuf->db_blkid != DMU_SPILL_BLKID) {
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1444 ASSERT(dr->dr_dbuf->db_level == old_nlevels-1);
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1445 list_remove(&dn->dn_dirty_records[txgoff], dr);
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1446 list_insert_tail(&new->dt.di.dr_children, dr);
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1447 dr->dr_parent = new;
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1448 }
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1449 }
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1450 mutex_exit(&new->dt.di.dr_mtx);
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1451 mutex_exit(&dn->dn_mtx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1452 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1453
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1454 out:
7332 396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1455 if (have_read)
396f25bd1f34 6579975 dnode_new_blkid should look before it locks Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7049 diff changeset	1456 rw_downgrade(&dn->dn_struct_rwlock);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1457 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1458
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1459 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1460 dnode_clear_range(dnode_t dn, uint64_t blkid, uint64_t nblks, dmu_tx_t tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1461 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1462 avl_tree_t *tree = &dn->dn_ranges[tx->tx_txg&TXG_MASK];
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1463 avl_index_t where;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1464 free_range_t *rp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1465 free_range_t rp_tofind;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1466 uint64_t endblk = blkid + nblks;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1467
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1468 ASSERT(MUTEX_HELD(&dn->dn_mtx));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1469 ASSERT(nblks <= UINT64_MAX - blkid); /* no overflow */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1470
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1471 dprintf_dnode(dn, "blkid=%llu nblks=%llu txg=%llu\n",
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1472 blkid, nblks, tx->tx_txg);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1473 rp_tofind.fr_blkid = blkid;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1474 rp = avl_find(tree, &rp_tofind, &where);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1475 if (rp == NULL)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1476 rp = avl_nearest(tree, where, AVL_BEFORE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1477 if (rp == NULL)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1478 rp = avl_nearest(tree, where, AVL_AFTER);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1479
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1480 while (rp && (rp->fr_blkid <= blkid + nblks)) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1481 uint64_t fr_endblk = rp->fr_blkid + rp->fr_nblks;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1482 free_range_t *nrp = AVL_NEXT(tree, rp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1483
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1484 if (blkid <= rp->fr_blkid && endblk >= fr_endblk) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1485 /* clear this entire range */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1486 avl_remove(tree, rp);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1487 kmem_free(rp, sizeof (free_range_t));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1488 } else if (blkid <= rp->fr_blkid &&
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1489 endblk > rp->fr_blkid && endblk < fr_endblk) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1490 /* clear the beginning of this range */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1491 rp->fr_blkid = endblk;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1492 rp->fr_nblks = fr_endblk - endblk;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1493 } else if (blkid > rp->fr_blkid && blkid < fr_endblk &&
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1494 endblk >= fr_endblk) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1495 /* clear the end of this range */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1496 rp->fr_nblks = blkid - rp->fr_blkid;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1497 } else if (blkid > rp->fr_blkid && endblk < fr_endblk) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1498 /* clear a chunk out of this range */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1499 free_range_t *new_rp =
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1500 kmem_alloc(sizeof (free_range_t), KM_SLEEP);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1501
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1502 new_rp->fr_blkid = endblk;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1503 new_rp->fr_nblks = fr_endblk - endblk;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1504 avl_insert_here(tree, new_rp, rp, AVL_AFTER);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1505 rp->fr_nblks = blkid - rp->fr_blkid;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1506 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1507 /* there may be no overlap */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1508 rp = nrp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1509 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1510 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1511
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1512 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1513 dnode_free_range(dnode_t dn, uint64_t off, uint64_t len, dmu_tx_t tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1514 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1515 dmu_buf_impl_t *db;
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1516 uint64_t blkoff, blkid, nblks;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1517 int blksz, blkshift, head, tail;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1518 int trunc = FALSE;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1519 int epbs;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1520
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1521 rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1522 blksz = dn->dn_datablksz;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1523 blkshift = dn->dn_datablkshift;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1524 epbs = dn->dn_indblkshift - SPA_BLKPTRSHIFT;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1525
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1526 if (len == -1ULL) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1527 len = UINT64_MAX - off;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1528 trunc = TRUE;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1529 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1530
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1531 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1532 * First, block align the region to free:
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1533 */
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1534 if (ISP2(blksz)) {
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1535 head = P2NPHASE(off, blksz);
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1536 blkoff = P2PHASE(off, blksz);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1537 if ((off >> blkshift) > dn->dn_maxblkid)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1538 goto out;
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1539 } else {
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1540 ASSERT(dn->dn_maxblkid == 0);
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1541 if (off == 0 && len >= blksz) {
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1542 /* Freeing the whole block; fast-track this request */
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1543 blkid = 0;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1544 nblks = 1;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1545 goto done;
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1546 } else if (off >= blksz) {
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1547 /* Freeing past end-of-data */
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1548 goto out;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1549 } else {
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1550 /* Freeing part of the block. */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1551 head = blksz - off;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1552 ASSERT3U(head, >, 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1553 }
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1554 blkoff = off;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1555 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1556 /* zero out any partial block data at the start of the range */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1557 if (head) {
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1558 ASSERT3U(blkoff + head, ==, blksz);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1559 if (len < head)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1560 head = len;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1561 if (dbuf_hold_impl(dn, 0, dbuf_whichblock(dn, off), TRUE,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1562 FTAG, &db) == 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1563 caddr_t data;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1564
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1565 /* don't dirty if it isn't on disk and isn't dirty */
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3087 diff changeset	1566 if (db->db_last_dirty \|\|
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1567 (db->db_blkptr && !BP_IS_HOLE(db->db_blkptr))) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1568 rw_exit(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1569 dbuf_will_dirty(db, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1570 rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1571 data = db->db.db_data;
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1572 bzero(data + blkoff, head);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1573 }
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1574 dbuf_rele(db, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1575 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1576 off += head;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1577 len -= head;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1578 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1579
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1580 /* If the range was less than one block, we're done */
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1581 if (len == 0)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1582 goto out;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1583
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1584 /* If the remaining range is past end of file, we're done */
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1585 if ((off >> blkshift) > dn->dn_maxblkid)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1586 goto out;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1587
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1588 ASSERT(ISP2(blksz));
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1589 if (trunc)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1590 tail = 0;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1591 else
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1592 tail = P2PHASE(len, blksz);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1593
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	1594 ASSERT0(P2PHASE(off, blksz));
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1595 /* zero out any partial block data at the end of the range */
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1596 if (tail) {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1597 if (len < tail)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1598 tail = len;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1599 if (dbuf_hold_impl(dn, 0, dbuf_whichblock(dn, off+len),
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1600 TRUE, FTAG, &db) == 0) {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1601 /* don't dirty if not on disk and not dirty */
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1602 if (db->db_last_dirty \|\|
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1603 (db->db_blkptr && !BP_IS_HOLE(db->db_blkptr))) {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1604 rw_exit(&dn->dn_struct_rwlock);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1605 dbuf_will_dirty(db, tx);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1606 rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1607 bzero(db->db.db_data, tail);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1608 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1609 dbuf_rele(db, FTAG);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1610 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1611 len -= tail;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1612 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1613
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1614 /* If the range did not include a full block, we are done */
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1615 if (len == 0)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1616 goto out;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1617
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1618 ASSERT(IS_P2ALIGNED(off, blksz));
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1619 ASSERT(trunc \|\| IS_P2ALIGNED(len, blksz));
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1620 blkid = off >> blkshift;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1621 nblks = len >> blkshift;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1622 if (trunc)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1623 nblks += 1;
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1624
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1625 /*
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1626 * Read in and mark all the level-1 indirects dirty,
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1627 * so that they will stay in memory until syncing phase.
7049 d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1628 * Always dirty the first and last indirect to make sure
d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1629 * we dirty all the partial indirects.
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1630 */
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1631 if (dn->dn_nlevels > 1) {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1632 uint64_t i, first, last;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1633 int shift = epbs + dn->dn_datablkshift;
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1634
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1635 first = blkid >> epbs;
7049 d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1636 if (db = dbuf_hold_level(dn, 1, first, FTAG)) {
d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1637 dbuf_will_dirty(db, tx);
d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1638 dbuf_rele(db, FTAG);
d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1639 }
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1640 if (trunc)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1641 last = dn->dn_maxblkid >> epbs;
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1642 else
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1643 last = (blkid + nblks - 1) >> epbs;
7049 d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1644 if (last > first && (db = dbuf_hold_level(dn, 1, last, FTAG))) {
d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1645 dbuf_will_dirty(db, tx);
d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1646 dbuf_rele(db, FTAG);
d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1647 }
d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1648 for (i = first + 1; i < last; i++) {
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1649 uint64_t ibyte = i << shift;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1650 int err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1651
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1652 err = dnode_next_offset(dn,
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1653 DNODE_FIND_HAVELOCK, &ibyte, 1, 1, 0);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1654 i = ibyte >> shift;
7049 d0b1e2eb4ab5 6723124 Assertion failed: all \|\| blocks_freed == 0 \|\| db->db_last_dirty maybee parents: 6992 diff changeset	1655 if (err == ESRCH \|\| i >= last)
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1656 break;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1657 ASSERT(err == 0);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1658 db = dbuf_hold_level(dn, 1, i, FTAG);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1659 if (db) {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1660 dbuf_will_dirty(db, tx);
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1661 dbuf_rele(db, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1662 }
2445 45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1663 }
45c1310316ff 6447381 dnode_free_range() does not handle non-power-of-two blocksizes correctly ahrens parents: 2082 diff changeset	1664 }
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1665 done:
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1666 /*
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1667 * Add this range to the dnode range list.
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1668 * We will finish up this free operation in the syncing phase.
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1669 */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1670 mutex_enter(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1671 dnode_clear_range(dn, blkid, nblks, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1672 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1673 free_range_t rp, found;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1674 avl_index_t where;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1675 avl_tree_t *tree = &dn->dn_ranges[tx->tx_txg&TXG_MASK];
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1676
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1677 /* Add new range to dn_ranges */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1678 rp = kmem_alloc(sizeof (free_range_t), KM_SLEEP);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1679 rp->fr_blkid = blkid;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1680 rp->fr_nblks = nblks;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1681 found = avl_find(tree, rp, &where);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1682 ASSERT(found == NULL);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1683 avl_insert(tree, rp, where);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1684 dprintf_dnode(dn, "blkid=%llu nblks=%llu txg=%llu\n",
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1685 blkid, nblks, tx->tx_txg);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1686 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1687 mutex_exit(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1688
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1689 dbuf_free_range(dn, blkid, blkid + nblks - 1, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1690 dnode_setdirty(dn, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1691 out:
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1692 if (trunc && dn->dn_maxblkid >= (off >> blkshift))
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1693 dn->dn_maxblkid = (off >> blkshift ? (off >> blkshift) - 1 : 0);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1694
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1695 rw_exit(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1696 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1697
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1698 static boolean_t
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1699 dnode_spill_freed(dnode_t *dn)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1700 {
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1701 int i;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1702
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1703 mutex_enter(&dn->dn_mtx);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1704 for (i = 0; i < TXG_SIZE; i++) {
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1705 if (dn->dn_rm_spillblk[i] == DN_KILL_SPILLBLK)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1706 break;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1707 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1708 mutex_exit(&dn->dn_mtx);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1709 return (i < TXG_SIZE);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1710 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1711
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1712 /* return TRUE if this blkid was freed in a recent txg, or FALSE if it wasn't */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1713 uint64_t
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1714 dnode_block_freed(dnode_t *dn, uint64_t blkid)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1715 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1716 free_range_t range_tofind;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1717 void *dp = spa_get_dsl(dn->dn_objset->os_spa);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1718 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1719
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1720 if (blkid == DMU_BONUS_BLKID)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1721 return (FALSE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1722
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1723 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1724 * If we're in the process of opening the pool, dp will not be
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1725 * set yet, but there shouldn't be anything dirty.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1726 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1727 if (dp == NULL)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1728 return (FALSE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1729
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1730 if (dn->dn_free_txg)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1731 return (TRUE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1732
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1733 if (blkid == DMU_SPILL_BLKID)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1734 return (dnode_spill_freed(dn));
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 10298 diff changeset	1735
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1736 range_tofind.fr_blkid = blkid;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1737 mutex_enter(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1738 for (i = 0; i < TXG_SIZE; i++) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1739 free_range_t *range_found;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1740 avl_index_t idx;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1741
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1742 range_found = avl_find(&dn->dn_ranges[i], &range_tofind, &idx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1743 if (range_found) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1744 ASSERT(range_found->fr_nblks > 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1745 break;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1746 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1747 range_found = avl_nearest(&dn->dn_ranges[i], idx, AVL_BEFORE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1748 if (range_found &&
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1749 range_found->fr_blkid + range_found->fr_nblks > blkid)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1750 break;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1751 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1752 mutex_exit(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1753 return (i < TXG_SIZE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1754 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1755
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1756 /* call from syncing context when we actually write/free space for this dnode */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1757 void
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1758 dnode_diduse_space(dnode_t *dn, int64_t delta)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1759 {
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1760 uint64_t space;
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1761 dprintf_dnode(dn, "dn=%p dnp=%p used=%llu delta=%lld\n",
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1762 dn, dn->dn_phys,
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1763 (u_longlong_t)dn->dn_phys->dn_used,
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1764 (longlong_t)delta);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1765
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1766 mutex_enter(&dn->dn_mtx);
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1767 space = DN_USED_BYTES(dn->dn_phys);
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1768 if (delta > 0) {
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1769 ASSERT3U(space + delta, >=, space); /* no overflow */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1770 } else {
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1771 ASSERT3U(space, >=, -delta); /* no underflow */
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1772 }
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1773 space += delta;
4577 ed36b0e652bc PSARC/2007/328 zfs upgrade ahrens parents: 4309 diff changeset	1774 if (spa_version(dn->dn_objset->os_spa) < SPA_VERSION_DNODE_BYTES) {
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1775 ASSERT((dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) == 0);
13805 e3a9ae14a119 3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Madhav Suresh <madhav.suresh@delphix.com> parents: 13765 diff changeset	1776 ASSERT0(P2PHASE(space, 1<<DEV_BSHIFT));
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1777 dn->dn_phys->dn_used = space >> DEV_BSHIFT;
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1778 } else {
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1779 dn->dn_phys->dn_used = space;
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1990 diff changeset	1780 dn->dn_phys->dn_flags \|= DNODE_FLAG_USED_BYTES;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1781 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1782 mutex_exit(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1783 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1784
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1785 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1786 * Call when we think we're going to write/free space in open context.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1787 * Be conservative (ie. OK to write less than this or free more than
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1788 * this, but don't write more or free less).
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1789 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1790 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1791 dnode_willuse_space(dnode_t dn, int64_t space, dmu_tx_t tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1792 {
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 9950 diff changeset	1793 objset_t *os = dn->dn_objset;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1794 dsl_dataset_t *ds = os->os_dsl_dataset;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1795
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1796 if (space > 0)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1797 space = spa_get_asize(os->os_spa, space);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1798
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1799 if (ds)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1800 dsl_dir_willuse_space(ds->ds_dir, space, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1801
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1802 dmu_tx_willuse_space(tx, space);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1803 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1804
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1805 /*
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1806 * This function scans a block at the indicated "level" looking for
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1807 * a hole or data (depending on 'flags'). If level > 0, then we are
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1808 * scanning an indirect block looking at its pointers. If level == 0,
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1809 * then we are looking at a block of dnodes. If we don't find what we
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1810 * are looking for in the block, we return ESRCH. Otherwise, return
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1811 * with *offset pointing to the beginning (if searching forwards) or
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1812 * end (if searching backwards) of the range covered by the block
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1813 * pointer we matched on (or dnode).
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1814 *
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1815 * The basic search algorithm used below by dnode_next_offset() is to
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1816 * use this function to search up the block tree (widen the search) until
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1817 * we find something (i.e., we don't return ESRCH) and then search back
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1818 * down the tree (narrow the search) until we reach our original search
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1819 * level.
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1820 */
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1821 static int
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1822 dnode_next_offset_level(dnode_t dn, int flags, uint64_t offset,
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1823 int lvl, uint64_t blkfill, uint64_t txg)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1824 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1825 dmu_buf_impl_t *db = NULL;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1826 void *data = NULL;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1827 uint64_t epbs = dn->dn_phys->dn_indblkshift - SPA_BLKPTRSHIFT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1828 uint64_t epb = 1ULL << epbs;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1829 uint64_t minfill, maxfill;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1830 boolean_t hole;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1831 int i, inc, error, span;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1832
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1833 dprintf("probing object %llu offset %llx level %d of %u\n",
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1834 dn->dn_object, *offset, lvl, dn->dn_phys->dn_nlevels);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1835
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 8986 diff changeset	1836 hole = ((flags & DNODE_FIND_HOLE) != 0);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1837 inc = (flags & DNODE_FIND_BACKWARDS) ? -1 : 1;
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1838 ASSERT(txg == 0 \|\| !hole);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1839
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1840 if (lvl == dn->dn_phys->dn_nlevels) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1841 error = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1842 epb = dn->dn_phys->dn_nblkptr;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1843 data = dn->dn_phys->dn_blkptr;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1844 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1845 uint64_t blkid = dbuf_whichblock(dn, offset) >> (epbs lvl);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1846 error = dbuf_hold_impl(dn, lvl, blkid, TRUE, FTAG, &db);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1847 if (error) {
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1848 if (error != ENOENT)
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1849 return (error);
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1850 if (hole)
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1851 return (0);
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1852 /*
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1853 * This can only happen when we are searching up
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1854 * the block tree for data. We don't really need to
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1855 * adjust the offset, as we will just end up looking
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1856 * at the pointer to this block in its parent, and its
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1857 * going to be unallocated, so we will skip over it.
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1858 */
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1859 return (ESRCH);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1860 }
1793 d371fba21a3e 6407444 unhandled i/o error from dnode_next_offset_level() ahrens parents: 1646 diff changeset	1861 error = dbuf_read(db, NULL, DB_RF_CANFAIL \| DB_RF_HAVESTRUCT);
d371fba21a3e 6407444 unhandled i/o error from dnode_next_offset_level() ahrens parents: 1646 diff changeset	1862 if (error) {
d371fba21a3e 6407444 unhandled i/o error from dnode_next_offset_level() ahrens parents: 1646 diff changeset	1863 dbuf_rele(db, FTAG);
d371fba21a3e 6407444 unhandled i/o error from dnode_next_offset_level() ahrens parents: 1646 diff changeset	1864 return (error);
d371fba21a3e 6407444 unhandled i/o error from dnode_next_offset_level() ahrens parents: 1646 diff changeset	1865 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1866 data = db->db.db_data;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1867 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1868
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1869 if (db && txg &&
4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1870 (db->db_blkptr == NULL \|\| db->db_blkptr->blk_birth <= txg)) {
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1871 /*
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1872 * This can only happen when we are searching up the tree
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1873 * and these conditions mean that we need to keep climbing.
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1874 */
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1875 error = ESRCH;
4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1876 } else if (lvl == 0) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1877 dnode_phys_t *dnp = data;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1878 span = DNODE_SHIFT;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1879 ASSERT(dn->dn_type == DMU_OT_DNODE);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1880
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1881 for (i = (*offset >> span) & (blkfill - 1);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1882 i >= 0 && i < blkfill; i += inc) {
9409 9dc3f17354ed 6809683 zfs destroy fails to free object in open context, stops up txg train Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 9396 diff changeset	1883 if ((dnp[i].dn_type == DMU_OT_NONE) == hole)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1884 break;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1885 offset += (1ULL << span) inc;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1886 }
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1887 if (i < 0 \|\| i == blkfill)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1888 error = ESRCH;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1889 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1890 blkptr_t *bp = data;
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1891 uint64_t start = *offset;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1892 span = (lvl - 1) * epbs + dn->dn_datablkshift;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1893 minfill = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1894 maxfill = blkfill << ((lvl - 1) * epbs);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1895
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1896 if (hole)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1897 maxfill--;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1898 else
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1899 minfill++;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1900
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1901 offset = offset >> span;
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1902 for (i = BF64_GET(*offset, 0, epbs);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1903 i >= 0 && i < epb; i += inc) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1904 if (bp[i].blk_fill >= minfill &&
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1905 bp[i].blk_fill <= maxfill &&
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7332 diff changeset	1906 (hole \|\| bp[i].blk_birth > txg))
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1907 break;
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1908 if (inc > 0 \|\| *offset > 0)
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1909 *offset += inc;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1910 }
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1911 offset = offset << span;
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1912 if (inc < 0) {
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1913 /* traversing backwards; position offset at the end */
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1914 ASSERT3U(*offset, <=, start);
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1915 offset = MIN(offset + (1ULL << span) - 1, start);
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1916 } else if (*offset < start) {
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1917 *offset = start;
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1918 }
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9409 diff changeset	1919 if (i < 0 \|\| i >= epb)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1920 error = ESRCH;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1921 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1922
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1923 if (db)
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 1491 diff changeset	1924 dbuf_rele(db, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1925
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1926 return (error);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1927 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1928
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1929 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1930 * Find the next hole, data, or sparse region at or after *offset.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1931 * The value 'blkfill' tells us how many items we expect to find
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1932 * in an L0 data block; this value is 1 for normal objects,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1933 * DNODES_PER_BLOCK for the meta dnode, and some fraction of
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1934 * DNODES_PER_BLOCK when searching for sparse regions thereof.
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1935 *
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1936 * Examples:
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1937 *
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1938 * dnode_next_offset(dn, flags, offset, 1, 1, 0);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1939 * Finds the next/previous hole/data in a file.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1940 * Used in dmu_offset_next().
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1941 *
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1942 * dnode_next_offset(mdn, flags, offset, 0, DNODES_PER_BLOCK, txg);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1943 * Finds the next free/allocated dnode an objset's meta-dnode.
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1944 * Only finds objects that have new contents since txg (ie.
4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1945 * bonus buffer changes and content removal are ignored).
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1946 * Used in dmu_object_next().
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1947 *
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1948 * dnode_next_offset(mdn, DNODE_FIND_HOLE, offset, 2, DNODES_PER_BLOCK >> 2, 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1949 * Finds the next L2 meta-dnode bp that's at most 1/4 full.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1950 * Used in dmu_object_alloc().
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1951 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1952 int
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1953 dnode_next_offset(dnode_t dn, int flags, uint64_t offset,
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1954 int minlvl, uint64_t blkfill, uint64_t txg)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1955 {
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1956 uint64_t initial_offset = *offset;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1957 int lvl, maxlvl;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1958 int error = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1959
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1960 if (!(flags & DNODE_FIND_HAVELOCK))
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1961 rw_enter(&dn->dn_struct_rwlock, RW_READER);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1962
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1963 if (dn->dn_phys->dn_nlevels == 0) {
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1964 error = ESRCH;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1965 goto out;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1966 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1967
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1968 if (dn->dn_datablkshift == 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1969 if (*offset < dn->dn_datablksz) {
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1970 if (flags & DNODE_FIND_HOLE)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1971 *offset = dn->dn_datablksz;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1972 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1973 error = ESRCH;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1974 }
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1975 goto out;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1976 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1977
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1978 maxlvl = dn->dn_phys->dn_nlevels;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1979
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1980 for (lvl = minlvl; lvl <= maxlvl; lvl++) {
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1981 error = dnode_next_offset_level(dn,
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1982 flags, offset, lvl, blkfill, txg);
1793 d371fba21a3e 6407444 unhandled i/o error from dnode_next_offset_level() ahrens parents: 1646 diff changeset	1983 if (error != ESRCH)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1984 break;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1985 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1986
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1987 while (error == 0 && --lvl >= minlvl) {
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1988 error = dnode_next_offset_level(dn,
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1989 flags, offset, lvl, blkfill, txg);
3025 4e5ee8301d84 6424466 "panic: data after EOF" when unmounting abused pool ahrens parents: 2885 diff changeset	1990 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1991
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1992 if (error == 0 && (flags & DNODE_FIND_BACKWARDS ?
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1993 initial_offset < offset : initial_offset > offset))
1793 d371fba21a3e 6407444 unhandled i/o error from dnode_next_offset_level() ahrens parents: 1646 diff changeset	1994 error = ESRCH;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1995 out:
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1996 if (!(flags & DNODE_FIND_HAVELOCK))
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 4944 diff changeset	1997 rw_exit(&dn->dn_struct_rwlock);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1998
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1999 return (error);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	2000 }

Mercurial > illumos > illumos-gate

annotate usr/src/uts/common/fs/zfs/dnode.c @ 13973:4972ab336f54