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

annotate usr/src/uts/common/fs/zfs/dnode.c @ 13805:e3a9ae14a119

3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero Reviewed by Matt Ahrens <matthew.ahrens@delphix.com> Reviewed by George Wilson <george.wilson@delphix.com> Approved by Eric Schrock <eric.schrock@delphix.com>

author	Madhav Suresh <madhav.suresh@delphix.com>
date	Fri, 07 Sep 2012 07:19:55 -0700
parents	9410cf539b11
children	4972ab336f54

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

Mercurial > illumos > illumos-gate

annotate usr/src/uts/common/fs/zfs/dnode.c @ 13805:e3a9ae14a119