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

annotate usr/src/uts/common/fs/zfs/dmu.c @ 11935:538c866aaac6

6716117 ZFS needs native system attribute infrastructure 6516171 zpl symlinks should have their own object type

author	Mark Shellenbaum <Mark.Shellenbaum@Sun.COM>
date	Tue, 16 Mar 2010 09:43:38 -0600
parents	1d964fb5d948
children	bb40732a982e

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
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	5 * Common Development and Distribution License (the "License").
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 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 /*
11539 10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	23 * Use is subject to license terms.
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/dmu.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	27 #include <sys/dmu_impl.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	28 #include <sys/dmu_tx.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	29 #include <sys/dbuf.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	30 #include <sys/dnode.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	31 #include <sys/zfs_context.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/dmu_traverse.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/dsl_dir.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	36 #include <sys/dsl_pool.h>
2199 712a788c2dfd PSARC 2006/388 snapshot -r ahrens parents: 2082 diff changeset	37 #include <sys/dsl_synctask.h>
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2743 diff changeset	38 #include <sys/dsl_prop.h>
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	39 #include <sys/dmu_zfetch.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	40 #include <sys/zfs_ioctl.h>
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	41 #include <sys/zap.h>
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	42 #include <sys/zio_checksum.h>
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	43 #include <sys/sa.h>
2688 12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	44 #ifdef _KERNEL
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	45 #include <sys/vmsystm.h>
7315 cdba25672122 6735592 "zio" vmem arenas are confusing, not reported separately Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7237 diff changeset	46 #include <sys/zfs_znode.h>
2688 12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	47 #endif
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	48
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	49 const dmu_object_type_info_t dmu_ot[DMU_OT_NUMTYPES] = {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	50 { byteswap_uint8_array, TRUE, "unallocated" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	51 { zap_byteswap, TRUE, "object directory" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	52 { byteswap_uint64_array, TRUE, "object array" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	53 { byteswap_uint8_array, TRUE, "packed nvlist" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	54 { byteswap_uint64_array, TRUE, "packed nvlist size" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	55 { byteswap_uint64_array, TRUE, "bplist" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	56 { byteswap_uint64_array, TRUE, "bplist header" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	57 { byteswap_uint64_array, TRUE, "SPA space map header" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	58 { byteswap_uint64_array, TRUE, "SPA space map" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	59 { byteswap_uint64_array, TRUE, "ZIL intent log" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	60 { dnode_buf_byteswap, TRUE, "DMU dnode" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	61 { dmu_objset_byteswap, TRUE, "DMU objset" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	62 { byteswap_uint64_array, TRUE, "DSL directory" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	63 { zap_byteswap, TRUE, "DSL directory child map"},
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	64 { zap_byteswap, TRUE, "DSL dataset snap map" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	65 { zap_byteswap, TRUE, "DSL props" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	66 { byteswap_uint64_array, TRUE, "DSL dataset" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	67 { zfs_znode_byteswap, TRUE, "ZFS znode" },
5331 3047ad28a67b PSARC/2007/218 caller_context_t in all VOPs amw parents: 4944 diff changeset	68 { zfs_oldacl_byteswap, TRUE, "ZFS V0 ACL" },
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	69 { byteswap_uint8_array, FALSE, "ZFS plain file" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	70 { zap_byteswap, TRUE, "ZFS directory" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	71 { zap_byteswap, TRUE, "ZFS master node" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	72 { zap_byteswap, TRUE, "ZFS delete queue" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	73 { byteswap_uint8_array, FALSE, "zvol object" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	74 { zap_byteswap, TRUE, "zvol prop" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	75 { byteswap_uint8_array, FALSE, "other uint8[]" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	76 { byteswap_uint64_array, FALSE, "other uint64[]" },
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	77 { zap_byteswap, TRUE, "other ZAP" },
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	78 { zap_byteswap, TRUE, "persistent error log" },
2926 acfcfefbc60d PSARC 2006/288 zpool history ek110237 parents: 2885 diff changeset	79 { byteswap_uint8_array, TRUE, "SPA history" },
acfcfefbc60d PSARC 2006/288 zpool history ek110237 parents: 2885 diff changeset	80 { byteswap_uint64_array, TRUE, "SPA history offsets" },
4543 12bb2876a62e PSARC/2006/465 ZFS Delegated Administration marks parents: 3912 diff changeset	81 { zap_byteswap, TRUE, "Pool properties" },
5331 3047ad28a67b PSARC/2007/218 caller_context_t in all VOPs amw parents: 4944 diff changeset	82 { zap_byteswap, TRUE, "DSL permissions" },
3047ad28a67b PSARC/2007/218 caller_context_t in all VOPs amw parents: 4944 diff changeset	83 { zfs_acl_byteswap, TRUE, "ZFS ACL" },
3047ad28a67b PSARC/2007/218 caller_context_t in all VOPs amw parents: 4944 diff changeset	84 { byteswap_uint8_array, TRUE, "ZFS SYSACL" },
3047ad28a67b PSARC/2007/218 caller_context_t in all VOPs amw parents: 4944 diff changeset	85 { byteswap_uint8_array, TRUE, "FUID table" },
5339 11972030d913 6622084 FUID table size has wrong byteswap function marks parents: 5331 diff changeset	86 { byteswap_uint64_array, TRUE, "FUID table size" },
7046 361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	87 { zap_byteswap, TRUE, "DSL dataset next clones"},
361307ae060d 6343667 scrub/resilver has to start over when a snapshot is taken ahrens parents: 6992 diff changeset	88 { zap_byteswap, TRUE, "scrub work queue" },
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7872 diff changeset	89 { zap_byteswap, TRUE, "ZFS user/group used" },
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7872 diff changeset	90 { zap_byteswap, TRUE, "ZFS user/group quota" },
10242 c40d075fbca6 PSARC/2009/297 zfs snapshot holds Chris Kirby <chris.kirby@sun.com> parents: 10209 diff changeset	91 { zap_byteswap, TRUE, "snapshot refcount tags"},
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	92 { zap_byteswap, TRUE, "DDT ZAP algorithm" },
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	93 { zap_byteswap, TRUE, "DDT statistics" },
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	94 { byteswap_uint8_array, TRUE, "System attributes" },
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	95 { zap_byteswap, TRUE, "SA master node" },
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	96 { zap_byteswap, TRUE, "SA attr registration" },
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	97 { zap_byteswap, TRUE, "SA attr layouts" }, };
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	98
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	99 int
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	100 dmu_buf_hold(objset_t *os, uint64_t object, uint64_t offset,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	101 void tag, dmu_buf_t *dbp)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	102 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	103 dnode_t *dn;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	104 uint64_t blkid;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	105 dmu_buf_impl_t *db;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	106 int err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	107
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	108 err = dnode_hold(os, object, FTAG, &dn);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	109 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	110 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	111 blkid = dbuf_whichblock(dn, offset);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	112 rw_enter(&dn->dn_struct_rwlock, RW_READER);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	113 db = dbuf_hold(dn, blkid, tag);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	114 rw_exit(&dn->dn_struct_rwlock);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	115 if (db == NULL) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	116 err = EIO;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	117 } else {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	118 err = dbuf_read(db, NULL, DB_RF_CANFAIL);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	119 if (err) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	120 dbuf_rele(db, tag);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	121 db = NULL;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	122 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	123 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	124
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	125 dnode_rele(dn, FTAG);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	126 *dbp = &db->db;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	127 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	128 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	129
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	130 int
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	131 dmu_bonus_max(void)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	132 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	133 return (DN_MAX_BONUSLEN);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	134 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	135
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	136 int
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	137 dmu_set_bonus(dmu_buf_t db, int newsize, dmu_tx_t tx)
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	138 {
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	139 dnode_t dn = ((dmu_buf_impl_t )db)->db_dnode;
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	140
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	141 if (dn->dn_bonus != (dmu_buf_impl_t *)db)
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	142 return (EINVAL);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	143 if (newsize < 0 \|\| newsize > db->db_size)
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	144 return (EINVAL);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	145 dnode_setbonuslen(dn, newsize, tx);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	146 return (0);
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	147 }
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	148
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	149 int
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	150 dmu_set_bonustype(dmu_buf_t db, dmu_object_type_t type, dmu_tx_t tx)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	151 {
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	152 dnode_t dn = ((dmu_buf_impl_t )db)->db_dnode;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	153
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	154 if (type > DMU_OT_NUMTYPES)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	155 return (EINVAL);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	156
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	157 if (dn->dn_bonus != (dmu_buf_impl_t *)db)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	158 return (EINVAL);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	159
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	160 dnode_setbonus_type(dn, type, tx);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	161 return (0);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	162 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	163
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	164 int
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	165 dmu_rm_spill(objset_t os, uint64_t object, dmu_tx_t tx)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	166 {
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	167 dnode_t *dn;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	168 int error;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	169
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	170 error = dnode_hold(os, object, FTAG, &dn);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	171 dbuf_rm_spill(dn, tx);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	172 dnode_rele(dn, FTAG);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	173 return (error);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	174 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	175
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	176 /*
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	177 * returns ENOENT, EIO, or 0.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	178 */
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	179 int
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	180 dmu_bonus_hold(objset_t os, uint64_t object, void tag, dmu_buf_t **dbp)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	181 {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	182 dnode_t *dn;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	183 dmu_buf_impl_t *db;
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	184 int error;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	185
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	186 error = dnode_hold(os, object, FTAG, &dn);
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	187 if (error)
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	188 return (error);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	189
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	190 rw_enter(&dn->dn_struct_rwlock, RW_READER);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	191 if (dn->dn_bonus == NULL) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	192 rw_exit(&dn->dn_struct_rwlock);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	193 rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	194 if (dn->dn_bonus == NULL)
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	195 dbuf_create_bonus(dn);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	196 }
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	197 db = dn->dn_bonus;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	198 rw_exit(&dn->dn_struct_rwlock);
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	199
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	200 /* as long as the bonus buf is held, the dnode will be held */
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	201 if (refcount_add(&db->db_holds, tag) == 1)
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	202 VERIFY(dnode_add_ref(dn, db));
96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	203
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	204 dnode_rele(dn, FTAG);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	205
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	206 VERIFY(0 == dbuf_read(db, NULL, DB_RF_MUST_SUCCEED));
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	207
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	208 *dbp = &db->db;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	209 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	210 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	211
2391 2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	212 /*
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	213 * returns ENOENT, EIO, or 0.
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	214 *
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	215 * This interface will allocate a blank spill dbuf when a spill blk
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	216 * doesn't already exist on the dnode.
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	217 *
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	218 * if you only want to find an already existing spill db, then
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	219 * dmu_spill_hold_existing() should be used.
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	220 */
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	221 int
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	222 dmu_spill_hold_by_dnode(dnode_t dn, uint32_t flags, void tag, dmu_buf_t **dbp)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	223 {
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	224 dmu_buf_impl_t *db = NULL;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	225 int err;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	226
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	227 if ((flags & DB_RF_HAVESTRUCT) == 0)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	228 rw_enter(&dn->dn_struct_rwlock, RW_READER);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	229
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	230 db = dbuf_hold(dn, DMU_SPILL_BLKID, tag);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	231
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	232 if ((flags & DB_RF_HAVESTRUCT) == 0)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	233 rw_exit(&dn->dn_struct_rwlock);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	234
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	235 ASSERT(db != NULL);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	236 err = dbuf_read(db, NULL, DB_RF_MUST_SUCCEED \| flags);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	237 *dbp = &db->db;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	238 return (err);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	239 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	240
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	241 int
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	242 dmu_spill_hold_existing(dmu_buf_t bonus, void tag, dmu_buf_t **dbp)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	243 {
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	244 dnode_t dn = ((dmu_buf_impl_t )bonus)->db_dnode;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	245 int err;
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	246
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	247 if (spa_version(dn->dn_objset->os_spa) < SPA_VERSION_SA)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	248 return (EINVAL);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	249 rw_enter(&dn->dn_struct_rwlock, RW_READER);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	250
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	251 if (!dn->dn_have_spill) {
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	252 rw_exit(&dn->dn_struct_rwlock);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	253 return (ENOENT);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	254 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	255 err = dmu_spill_hold_by_dnode(dn, DB_RF_HAVESTRUCT, tag, dbp);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	256 rw_exit(&dn->dn_struct_rwlock);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	257 return (err);
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	258 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	259
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	260 int
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	261 dmu_spill_hold_by_bonus(dmu_buf_t bonus, void tag, dmu_buf_t **dbp)
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	262 {
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	263 return (dmu_spill_hold_by_dnode(((dmu_buf_impl_t *)bonus)->db_dnode,
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	264 0, tag, dbp));
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	265 }
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	266
538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	267 /*
2391 2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	268 * Note: longer-term, we should modify all of the dmu_buf_*() interfaces
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	269 * to take a held dnode rather than <os, object> -- the lookup is wasteful,
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	270 * and can induce severe lock contention when writing to several files
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	271 * whose dnodes are in the same block.
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	272 */
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	273 static int
9512 64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads Neil Perrin <Neil.Perrin@Sun.COM> parents: 9412 diff changeset	274 dmu_buf_hold_array_by_dnode(dnode_t *dn, uint64_t offset, uint64_t length,
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads Neil Perrin <Neil.Perrin@Sun.COM> parents: 9412 diff changeset	275 int read, void tag, int numbufsp, dmu_buf_t ***dbpp, uint32_t flags)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	276 {
7468 23915842aa09 6687412 zfs stuck issuing small txg Mark Maybee <Mark.Maybee@Sun.COM> parents: 7385 diff changeset	277 dsl_pool_t *dp = NULL;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	278 dmu_buf_t **dbp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	279 uint64_t blkid, nblks, i;
9512 64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads Neil Perrin <Neil.Perrin@Sun.COM> parents: 9412 diff changeset	280 uint32_t dbuf_flags;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	281 int err;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	282 zio_t *zio;
7468 23915842aa09 6687412 zfs stuck issuing small txg Mark Maybee <Mark.Maybee@Sun.COM> parents: 7385 diff changeset	283 hrtime_t start;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	284
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	285 ASSERT(length <= DMU_MAX_ACCESS);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	286
10209 91f47f0e7728 6830541 zfs_get_data trips on a verify Mark J Musante <Mark.Musante@Sun.COM> parents: 9951 diff changeset	287 dbuf_flags = DB_RF_CANFAIL \| DB_RF_NEVERWAIT \| DB_RF_HAVESTRUCT;
9512 64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads Neil Perrin <Neil.Perrin@Sun.COM> parents: 9412 diff changeset	288 if (flags & DMU_READ_NO_PREFETCH \|\| length > zfetch_array_rd_sz)
64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads Neil Perrin <Neil.Perrin@Sun.COM> parents: 9412 diff changeset	289 dbuf_flags \|= DB_RF_NOPREFETCH;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	290
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	291 rw_enter(&dn->dn_struct_rwlock, RW_READER);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	292 if (dn->dn_datablkshift) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	293 int blkshift = dn->dn_datablkshift;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	294 nblks = (P2ROUNDUP(offset+length, 1ULL<<blkshift) -
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3835 diff changeset	295 P2ALIGN(offset, 1ULL<<blkshift)) >> blkshift;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	296 } else {
3713 00e75dc8b749 6527325 want more assertions in space map code ahrens parents: 3689 diff changeset	297 if (offset + length > dn->dn_datablksz) {
00e75dc8b749 6527325 want more assertions in space map code ahrens parents: 3689 diff changeset	298 zfs_panic_recover("zfs: accessing past end of object "
00e75dc8b749 6527325 want more assertions in space map code ahrens parents: 3689 diff changeset	299 "%llx/%llx (size=%u access=%llu+%llu)",
00e75dc8b749 6527325 want more assertions in space map code ahrens parents: 3689 diff changeset	300 (longlong_t)dn->dn_objset->
00e75dc8b749 6527325 want more assertions in space map code ahrens parents: 3689 diff changeset	301 os_dsl_dataset->ds_object,
00e75dc8b749 6527325 want more assertions in space map code ahrens parents: 3689 diff changeset	302 (longlong_t)dn->dn_object, dn->dn_datablksz,
00e75dc8b749 6527325 want more assertions in space map code ahrens parents: 3689 diff changeset	303 (longlong_t)offset, (longlong_t)length);
10209 91f47f0e7728 6830541 zfs_get_data trips on a verify Mark J Musante <Mark.Musante@Sun.COM> parents: 9951 diff changeset	304 rw_exit(&dn->dn_struct_rwlock);
3713 00e75dc8b749 6527325 want more assertions in space map code ahrens parents: 3689 diff changeset	305 return (EIO);
00e75dc8b749 6527325 want more assertions in space map code ahrens parents: 3689 diff changeset	306 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	307 nblks = 1;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	308 }
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	309 dbp = kmem_zalloc(sizeof (dmu_buf_t ) nblks, KM_SLEEP);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	310
7468 23915842aa09 6687412 zfs stuck issuing small txg Mark Maybee <Mark.Maybee@Sun.COM> parents: 7385 diff changeset	311 if (dn->dn_objset->os_dsl_dataset)
23915842aa09 6687412 zfs stuck issuing small txg Mark Maybee <Mark.Maybee@Sun.COM> parents: 7385 diff changeset	312 dp = dn->dn_objset->os_dsl_dataset->ds_dir->dd_pool;
23915842aa09 6687412 zfs stuck issuing small txg Mark Maybee <Mark.Maybee@Sun.COM> parents: 7385 diff changeset	313 if (dp && dsl_pool_sync_context(dp))
23915842aa09 6687412 zfs stuck issuing small txg Mark Maybee <Mark.Maybee@Sun.COM> parents: 7385 diff changeset	314 start = gethrtime();
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7468 diff changeset	315 zio = zio_root(dn->dn_objset->os_spa, NULL, NULL, ZIO_FLAG_CANFAIL);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	316 blkid = dbuf_whichblock(dn, offset);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	317 for (i = 0; i < nblks; i++) {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	318 dmu_buf_impl_t *db = dbuf_hold(dn, blkid+i, tag);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	319 if (db == NULL) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	320 rw_exit(&dn->dn_struct_rwlock);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	321 dmu_buf_rele_array(dbp, nblks, tag);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	322 zio_nowait(zio);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	323 return (EIO);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	324 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	325 /* initiate async i/o */
2391 2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	326 if (read) {
9512 64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads Neil Perrin <Neil.Perrin@Sun.COM> parents: 9412 diff changeset	327 (void) dbuf_read(db, zio, dbuf_flags);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	328 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	329 dbp[i] = &db->db;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	330 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	331 rw_exit(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	332
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	333 /* wait for async i/o */
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	334 err = zio_wait(zio);
7468 23915842aa09 6687412 zfs stuck issuing small txg Mark Maybee <Mark.Maybee@Sun.COM> parents: 7385 diff changeset	335 /* track read overhead when we are in sync context */
23915842aa09 6687412 zfs stuck issuing small txg Mark Maybee <Mark.Maybee@Sun.COM> parents: 7385 diff changeset	336 if (dp && dsl_pool_sync_context(dp))
23915842aa09 6687412 zfs stuck issuing small txg Mark Maybee <Mark.Maybee@Sun.COM> parents: 7385 diff changeset	337 dp->dp_read_overhead += gethrtime() - start;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	338 if (err) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	339 dmu_buf_rele_array(dbp, nblks, tag);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	340 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	341 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	342
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	343 /* wait for other io to complete */
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	344 if (read) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	345 for (i = 0; i < nblks; i++) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	346 dmu_buf_impl_t db = (dmu_buf_impl_t )dbp[i];
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	347 mutex_enter(&db->db_mtx);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	348 while (db->db_state == DB_READ \|\|
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	349 db->db_state == DB_FILL)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	350 cv_wait(&db->db_changed, &db->db_mtx);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	351 if (db->db_state == DB_UNCACHED)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	352 err = EIO;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	353 mutex_exit(&db->db_mtx);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	354 if (err) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	355 dmu_buf_rele_array(dbp, nblks, tag);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	356 return (err);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	357 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	358 }
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	359 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	360
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	361 *numbufsp = nblks;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	362 *dbpp = dbp;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	363 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	364 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	365
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2743 diff changeset	366 static int
2391 2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	367 dmu_buf_hold_array(objset_t *os, uint64_t object, uint64_t offset,
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	368 uint64_t length, int read, void tag, int numbufsp, dmu_buf_t ***dbpp)
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	369 {
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	370 dnode_t *dn;
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	371 int err;
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	372
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	373 err = dnode_hold(os, object, FTAG, &dn);
2391 2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	374 if (err)
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	375 return (err);
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	376
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	377 err = dmu_buf_hold_array_by_dnode(dn, offset, length, read, tag,
9512 64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads Neil Perrin <Neil.Perrin@Sun.COM> parents: 9412 diff changeset	378 numbufsp, dbpp, DMU_READ_PREFETCH);
2391 2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	379
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	380 dnode_rele(dn, FTAG);
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	381
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	382 return (err);
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	383 }
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	384
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	385 int
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	386 dmu_buf_hold_array_by_bonus(dmu_buf_t *db, uint64_t offset,
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	387 uint64_t length, int read, void tag, int numbufsp, dmu_buf_t ***dbpp)
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	388 {
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	389 dnode_t dn = ((dmu_buf_impl_t )db)->db_dnode;
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	390 int err;
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	391
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	392 err = dmu_buf_hold_array_by_dnode(dn, offset, length, read, tag,
9512 64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads Neil Perrin <Neil.Perrin@Sun.COM> parents: 9412 diff changeset	393 numbufsp, dbpp, DMU_READ_PREFETCH);
2391 2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	394
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	395 return (err);
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	396 }
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	397
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	398 void
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	399 dmu_buf_rele_array(dmu_buf_t *dbp_fake, int numbufs, void tag)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	400 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	401 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	402 dmu_buf_impl_t dbp = (dmu_buf_impl_t )dbp_fake;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	403
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	404 if (numbufs == 0)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	405 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	406
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	407 for (i = 0; i < numbufs; i++) {
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	408 if (dbp[i])
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	409 dbuf_rele(dbp[i], tag);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	410 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	411
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	412 kmem_free(dbp, sizeof (dmu_buf_t ) numbufs);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	413 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	414
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	415 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	416 dmu_prefetch(objset_t *os, uint64_t object, uint64_t offset, uint64_t len)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	417 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	418 dnode_t *dn;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	419 uint64_t blkid;
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	420 int nblks, i, err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	421
2986 c782fcf7a319 6485204 more tuneable tweakin ek110237 parents: 2926 diff changeset	422 if (zfs_prefetch_disable)
c782fcf7a319 6485204 more tuneable tweakin ek110237 parents: 2926 diff changeset	423 return;
c782fcf7a319 6485204 more tuneable tweakin ek110237 parents: 2926 diff changeset	424
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	425 if (len == 0) { /* they're interested in the bonus buffer */
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	426 dn = os->os_meta_dnode;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	427
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	428 if (object == 0 \|\| object >= DN_MAX_OBJECT)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	429 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	430
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	431 rw_enter(&dn->dn_struct_rwlock, RW_READER);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	432 blkid = dbuf_whichblock(dn, object * sizeof (dnode_phys_t));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	433 dbuf_prefetch(dn, blkid);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	434 rw_exit(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	435 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	436 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	437
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	438 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	439 * XXX - Note, if the dnode for the requested object is not
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	440 * already cached, we will do a synchronous read in the
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	441 * dnode_hold() call. The same is true for any indirects.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	442 */
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	443 err = dnode_hold(os, object, FTAG, &dn);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	444 if (err != 0)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	445 return;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	446
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	447 rw_enter(&dn->dn_struct_rwlock, RW_READER);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	448 if (dn->dn_datablkshift) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	449 int blkshift = dn->dn_datablkshift;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	450 nblks = (P2ROUNDUP(offset+len, 1<<blkshift) -
3912 f6891a60bd72 PSARC 2007/083 ZFS bootable datasets lling parents: 3835 diff changeset	451 P2ALIGN(offset, 1<<blkshift)) >> blkshift;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	452 } else {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	453 nblks = (offset < dn->dn_datablksz);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	454 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	455
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	456 if (nblks != 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	457 blkid = dbuf_whichblock(dn, offset);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	458 for (i = 0; i < nblks; i++)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	459 dbuf_prefetch(dn, blkid+i);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	460 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	461
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	462 rw_exit(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	463
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	464 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	465 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	466
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	467 /*
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	468 * Get the next "chunk" of file data to free. We traverse the file from
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	469 * the end so that the file gets shorter over time (if we crashes in the
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	470 * middle, this will leave us in a better state). We find allocated file
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	471 * data by simply searching the allocated level 1 indirects.
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	472 */
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	473 static int
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	474 get_next_chunk(dnode_t dn, uint64_t start, uint64_t limit)
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	475 {
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	476 uint64_t len = *start - limit;
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	477 uint64_t blkcnt = 0;
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	478 uint64_t maxblks = DMU_MAX_ACCESS / (1ULL << (dn->dn_indblkshift + 1));
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	479 uint64_t iblkrange =
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7315 diff changeset	480 dn->dn_datablksz * EPB(dn->dn_indblkshift, SPA_BLKPTRSHIFT);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	481
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	482 ASSERT(limit <= *start);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	483
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	484 if (len <= iblkrange * maxblks) {
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	485 *start = limit;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	486 return (0);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	487 }
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	488 ASSERT(ISP2(iblkrange));
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7315 diff changeset	489
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	490 while (*start > limit && blkcnt < maxblks) {
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7315 diff changeset	491 int err;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	492
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	493 /* find next allocated L1 indirect */
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	494 err = dnode_next_offset(dn,
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	495 DNODE_FIND_BACKWARDS, start, 2, 1, 0);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	496
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	497 /* if there are no more, then we are done */
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	498 if (err == ESRCH) {
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	499 *start = limit;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	500 return (0);
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	501 } else if (err) {
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	502 return (err);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	503 }
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	504 blkcnt += 1;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	505
9950 78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	506 /* reset offset to end of "next" block back */
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	507 start = P2ALIGN(start, iblkrange);
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	508 if (*start <= limit)
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	509 *start = limit;
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	510 else
78fc41aa9bc5 6792701 Removing large holey file does not free space Mark Maybee <Mark.Maybee@Sun.COM> parents: 9512 diff changeset	511 *start -= 1;
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	512 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	513 return (0);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	514 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	515
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	516 static int
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	517 dmu_free_long_range_impl(objset_t os, dnode_t dn, uint64_t offset,
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	518 uint64_t length, boolean_t free_dnode)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	519 {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	520 dmu_tx_t *tx;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	521 uint64_t object_size, start, end, len;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	522 boolean_t trunc = (length == DMU_OBJECT_END);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	523 int align, err;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	524
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	525 align = 1 << dn->dn_datablkshift;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	526 ASSERT(align > 0);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	527 object_size = align == 1 ? dn->dn_datablksz :
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	528 (dn->dn_maxblkid + 1) << dn->dn_datablkshift;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	529
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7872 diff changeset	530 end = offset + length;
f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7872 diff changeset	531 if (trunc \|\| end > object_size)
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	532 end = object_size;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	533 if (end <= offset)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	534 return (0);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	535 length = end - offset;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	536
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	537 while (length) {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	538 start = end;
9396 f41cf682d0d3 PSARC/2009/204 ZFS user/group quotas & space accounting Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 7872 diff changeset	539 /* assert(offset <= start) */
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	540 err = get_next_chunk(dn, &start, offset);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	541 if (err)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	542 return (err);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	543 len = trunc ? DMU_OBJECT_END : end - start;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	544
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	545 tx = dmu_tx_create(os);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	546 dmu_tx_hold_free(tx, dn->dn_object, start, len);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	547 err = dmu_tx_assign(tx, TXG_WAIT);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	548 if (err) {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	549 dmu_tx_abort(tx);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	550 return (err);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	551 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	552
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	553 dnode_free_range(dn, start, trunc ? -1 : len, tx);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	554
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7315 diff changeset	555 if (start == 0 && free_dnode) {
f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7315 diff changeset	556 ASSERT(trunc);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	557 dnode_free(dn, tx);
7385 f69ff8507427 6727817 ZFS assertion failure (zero length arc_buf_alloc) during NFS I/O Mark Maybee <Mark.Maybee@Sun.COM> parents: 7315 diff changeset	558 }
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	559
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	560 length -= end - start;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	561
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	562 dmu_tx_commit(tx);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	563 end = start;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	564 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	565 return (0);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	566 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	567
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	568 int
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	569 dmu_free_long_range(objset_t *os, uint64_t object,
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	570 uint64_t offset, uint64_t length)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	571 {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	572 dnode_t *dn;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	573 int err;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	574
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	575 err = dnode_hold(os, object, FTAG, &dn);
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	576 if (err != 0)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	577 return (err);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	578 err = dmu_free_long_range_impl(os, dn, offset, length, FALSE);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	579 dnode_rele(dn, FTAG);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	580 return (err);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	581 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	582
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	583 int
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	584 dmu_free_object(objset_t *os, uint64_t object)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	585 {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	586 dnode_t *dn;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	587 dmu_tx_t *tx;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	588 int err;
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	589
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	590 err = dnode_hold_impl(os, object, DNODE_MUST_BE_ALLOCATED,
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	591 FTAG, &dn);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	592 if (err != 0)
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	593 return (err);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	594 if (dn->dn_nlevels == 1) {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	595 tx = dmu_tx_create(os);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	596 dmu_tx_hold_bonus(tx, object);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	597 dmu_tx_hold_free(tx, dn->dn_object, 0, DMU_OBJECT_END);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	598 err = dmu_tx_assign(tx, TXG_WAIT);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	599 if (err == 0) {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	600 dnode_free_range(dn, 0, DMU_OBJECT_END, tx);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	601 dnode_free(dn, tx);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	602 dmu_tx_commit(tx);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	603 } else {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	604 dmu_tx_abort(tx);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	605 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	606 } else {
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	607 err = dmu_free_long_range_impl(os, dn, 0, DMU_OBJECT_END, TRUE);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	608 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	609 dnode_rele(dn, FTAG);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	610 return (err);
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	611 }
20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	612
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	613 int
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	614 dmu_free_range(objset_t *os, uint64_t object, uint64_t offset,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	615 uint64_t size, dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	616 {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	617 dnode_t *dn;
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	618 int err = dnode_hold(os, object, FTAG, &dn);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	619 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	620 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	621 ASSERT(offset < UINT64_MAX);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	622 ASSERT(size == -1ULL \|\| size <= UINT64_MAX - offset);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	623 dnode_free_range(dn, offset, size, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	624 dnode_rele(dn, FTAG);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	625 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	626 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	627
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	628 int
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	629 dmu_read(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
9512 64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads Neil Perrin <Neil.Perrin@Sun.COM> parents: 9412 diff changeset	630 void *buf, uint32_t flags)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	631 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	632 dnode_t *dn;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	633 dmu_buf_t **dbp;
10209 91f47f0e7728 6830541 zfs_get_data trips on a verify Mark J Musante <Mark.Musante@Sun.COM> parents: 9951 diff changeset	634 int numbufs, err;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	635
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	636 err = dnode_hold(os, object, FTAG, &dn);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	637 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	638 return (err);
3638 6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	639
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	640 /*
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	641 * Deal with odd block sizes, where there can't be data past the first
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	642 * block. If we ever do the tail block optimization, we will need to
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	643 * handle that here as well.
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	644 */
10209 91f47f0e7728 6830541 zfs_get_data trips on a verify Mark J Musante <Mark.Musante@Sun.COM> parents: 9951 diff changeset	645 if (dn->dn_maxblkid == 0) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	646 int newsz = offset > dn->dn_datablksz ? 0 :
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	647 MIN(size, dn->dn_datablksz - offset);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	648 bzero((char *)buf + newsz, size - newsz);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	649 size = newsz;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	650 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	651
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	652 while (size > 0) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	653 uint64_t mylen = MIN(size, DMU_MAX_ACCESS / 2);
10209 91f47f0e7728 6830541 zfs_get_data trips on a verify Mark J Musante <Mark.Musante@Sun.COM> parents: 9951 diff changeset	654 int i;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	655
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	656 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	657 * NB: we could do this block-at-a-time, but it's nice
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	658 * to be reading in parallel.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	659 */
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2743 diff changeset	660 err = dmu_buf_hold_array_by_dnode(dn, offset, mylen,
9512 64cafcbcc337 6801810 Commit of aligned streaming rewrites to ZIL device causes unwanted disk reads Neil Perrin <Neil.Perrin@Sun.COM> parents: 9412 diff changeset	661 TRUE, FTAG, &numbufs, &dbp, flags);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	662 if (err)
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	663 break;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	664
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	665 for (i = 0; i < numbufs; i++) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	666 int tocpy;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	667 int bufoff;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	668 dmu_buf_t *db = dbp[i];
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	669
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	670 ASSERT(size > 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	671
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	672 bufoff = offset - db->db_offset;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	673 tocpy = (int)MIN(db->db_size - bufoff, size);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	674
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	675 bcopy((char *)db->db_data + bufoff, buf, tocpy);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	676
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	677 offset += tocpy;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	678 size -= tocpy;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	679 buf = (char *)buf + tocpy;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	680 }
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	681 dmu_buf_rele_array(dbp, numbufs, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	682 }
2885 c0259887ebbc 6460059 zfs destroy <snapshot> leaves behind kruft ahrens parents: 2743 diff changeset	683 dnode_rele(dn, FTAG);
4944 96d96f8de974 6569719 panic dangling dbufs (dn=ffffffff28814d30, dbuf=ffffffff20756008) maybee parents: 4543 diff changeset	684 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	685 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	686
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	687 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	688 dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	689 const void buf, dmu_tx_t tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	690 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	691 dmu_buf_t **dbp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	692 int numbufs, i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	693
2391 2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	694 if (size == 0)
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	695 return;
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	696
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	697 VERIFY(0 == dmu_buf_hold_array(os, object, offset, size,
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	698 FALSE, FTAG, &numbufs, &dbp));
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	699
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	700 for (i = 0; i < numbufs; i++) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	701 int tocpy;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	702 int bufoff;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	703 dmu_buf_t *db = dbp[i];
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	704
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	705 ASSERT(size > 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	706
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	707 bufoff = offset - db->db_offset;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	708 tocpy = (int)MIN(db->db_size - bufoff, size);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	709
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	710 ASSERT(i == 0 \|\| i == numbufs-1 \|\| tocpy == db->db_size);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	711
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	712 if (tocpy == db->db_size)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	713 dmu_buf_will_fill(db, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	714 else
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	715 dmu_buf_will_dirty(db, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	716
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	717 bcopy(buf, (char *)db->db_data + bufoff, tocpy);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	718
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	719 if (tocpy == db->db_size)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	720 dmu_buf_fill_done(db, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	721
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	722 offset += tocpy;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	723 size -= tocpy;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	724 buf = (char *)buf + tocpy;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	725 }
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	726 dmu_buf_rele_array(dbp, numbufs, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	727 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	728
7872 40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	729 void
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	730 dmu_prealloc(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	731 dmu_tx_t *tx)
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	732 {
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	733 dmu_buf_t **dbp;
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	734 int numbufs, i;
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	735
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	736 if (size == 0)
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	737 return;
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	738
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	739 VERIFY(0 == dmu_buf_hold_array(os, object, offset, size,
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	740 FALSE, FTAG, &numbufs, &dbp));
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	741
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	742 for (i = 0; i < numbufs; i++) {
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	743 dmu_buf_t *db = dbp[i];
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	744
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	745 dmu_buf_will_not_fill(db, tx);
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	746 }
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	747 dmu_buf_rele_array(dbp, numbufs, FTAG);
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	748 }
40a9434212f6 6646775 Speed up the dumpifying process for zvols Tim Haley <Tim.Haley@Sun.COM> parents: 7754 diff changeset	749
11539 10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	750 /*
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	751 * DMU support for xuio
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	752 */
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	753 kstat_t *xuio_ksp = NULL;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	754
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	755 int
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	756 dmu_xuio_init(xuio_t *xuio, int nblk)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	757 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	758 dmu_xuio_t *priv;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	759 uio_t *uio = &xuio->xu_uio;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	760
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	761 uio->uio_iovcnt = nblk;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	762 uio->uio_iov = kmem_zalloc(nblk * sizeof (iovec_t), KM_SLEEP);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	763
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	764 priv = kmem_zalloc(sizeof (dmu_xuio_t), KM_SLEEP);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	765 priv->cnt = nblk;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	766 priv->bufs = kmem_zalloc(nblk * sizeof (arc_buf_t *), KM_SLEEP);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	767 priv->iovp = uio->uio_iov;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	768 XUIO_XUZC_PRIV(xuio) = priv;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	769
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	770 if (XUIO_XUZC_RW(xuio) == UIO_READ)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	771 XUIOSTAT_INCR(xuiostat_onloan_rbuf, nblk);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	772 else
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	773 XUIOSTAT_INCR(xuiostat_onloan_wbuf, nblk);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	774
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	775 return (0);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	776 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	777
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	778 void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	779 dmu_xuio_fini(xuio_t *xuio)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	780 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	781 dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	782 int nblk = priv->cnt;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	783
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	784 kmem_free(priv->iovp, nblk * sizeof (iovec_t));
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	785 kmem_free(priv->bufs, nblk * sizeof (arc_buf_t *));
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	786 kmem_free(priv, sizeof (dmu_xuio_t));
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	787
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	788 if (XUIO_XUZC_RW(xuio) == UIO_READ)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	789 XUIOSTAT_INCR(xuiostat_onloan_rbuf, -nblk);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	790 else
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	791 XUIOSTAT_INCR(xuiostat_onloan_wbuf, -nblk);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	792 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	793
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	794 /*
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	795 * Initialize iov[priv->next] and priv->bufs[priv->next] with { off, n, abuf }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	796 * and increase priv->next by 1.
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	797 */
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	798 int
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	799 dmu_xuio_add(xuio_t xuio, arc_buf_t abuf, offset_t off, size_t n)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	800 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	801 struct iovec *iov;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	802 uio_t *uio = &xuio->xu_uio;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	803 dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	804 int i = priv->next++;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	805
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	806 ASSERT(i < priv->cnt);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	807 ASSERT(off + n <= arc_buf_size(abuf));
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	808 iov = uio->uio_iov + i;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	809 iov->iov_base = (char *)abuf->b_data + off;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	810 iov->iov_len = n;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	811 priv->bufs[i] = abuf;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	812 return (0);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	813 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	814
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	815 int
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	816 dmu_xuio_cnt(xuio_t *xuio)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	817 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	818 dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	819 return (priv->cnt);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	820 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	821
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	822 arc_buf_t *
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	823 dmu_xuio_arcbuf(xuio_t *xuio, int i)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	824 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	825 dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	826
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	827 ASSERT(i < priv->cnt);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	828 return (priv->bufs[i]);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	829 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	830
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	831 void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	832 dmu_xuio_clear(xuio_t *xuio, int i)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	833 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	834 dmu_xuio_t *priv = XUIO_XUZC_PRIV(xuio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	835
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	836 ASSERT(i < priv->cnt);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	837 priv->bufs[i] = NULL;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	838 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	839
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	840 static void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	841 xuio_stat_init(void)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	842 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	843 xuio_ksp = kstat_create("zfs", 0, "xuio_stats", "misc",
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	844 KSTAT_TYPE_NAMED, sizeof (xuio_stats) / sizeof (kstat_named_t),
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	845 KSTAT_FLAG_VIRTUAL);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	846 if (xuio_ksp != NULL) {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	847 xuio_ksp->ks_data = &xuio_stats;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	848 kstat_install(xuio_ksp);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	849 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	850 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	851
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	852 static void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	853 xuio_stat_fini(void)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	854 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	855 if (xuio_ksp != NULL) {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	856 kstat_delete(xuio_ksp);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	857 xuio_ksp = NULL;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	858 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	859 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	860
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	861 void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	862 xuio_stat_wbuf_copied()
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	863 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	864 XUIOSTAT_BUMP(xuiostat_wbuf_copied);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	865 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	866
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	867 void
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	868 xuio_stat_wbuf_nocopy()
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	869 {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	870 XUIOSTAT_BUMP(xuiostat_wbuf_nocopy);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	871 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	872
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	873 #ifdef _KERNEL
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	874 int
3638 6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	875 dmu_read_uio(objset_t os, uint64_t object, uio_t uio, uint64_t size)
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	876 {
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	877 dmu_buf_t **dbp;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	878 int numbufs, i, err;
11539 10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	879 xuio_t *xuio = NULL;
3638 6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	880
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	881 /*
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	882 * NB: we could do this block-at-a-time, but it's nice
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	883 * to be reading in parallel.
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	884 */
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	885 err = dmu_buf_hold_array(os, object, uio->uio_loffset, size, TRUE, FTAG,
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	886 &numbufs, &dbp);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	887 if (err)
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	888 return (err);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	889
11539 10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	890 if (uio->uio_extflg == UIO_XUIO)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	891 xuio = (xuio_t *)uio;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	892
3638 6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	893 for (i = 0; i < numbufs; i++) {
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	894 int tocpy;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	895 int bufoff;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	896 dmu_buf_t *db = dbp[i];
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	897
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	898 ASSERT(size > 0);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	899
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	900 bufoff = uio->uio_loffset - db->db_offset;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	901 tocpy = (int)MIN(db->db_size - bufoff, size);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	902
11539 10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	903 if (xuio) {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	904 dmu_buf_impl_t dbi = (dmu_buf_impl_t )db;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	905 arc_buf_t *dbuf_abuf = dbi->db_buf;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	906 arc_buf_t *abuf = dbuf_loan_arcbuf(dbi);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	907 err = dmu_xuio_add(xuio, abuf, bufoff, tocpy);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	908 if (!err) {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	909 uio->uio_resid -= tocpy;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	910 uio->uio_loffset += tocpy;
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	911 }
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	912
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	913 if (abuf == dbuf_abuf)
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	914 XUIOSTAT_BUMP(xuiostat_rbuf_nocopy);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	915 else
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	916 XUIOSTAT_BUMP(xuiostat_rbuf_copied);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	917 } else {
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	918 err = uiomove((char *)db->db_data + bufoff, tocpy,
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	919 UIO_READ, uio);
10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	920 }
3638 6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	921 if (err)
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	922 break;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	923
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	924 size -= tocpy;
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	925 }
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	926 dmu_buf_rele_array(dbp, numbufs, FTAG);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	927
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	928 return (err);
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	929 }
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	930
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	931 int
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	932 dmu_write_uio(objset_t os, uint64_t object, uio_t uio, uint64_t size,
6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	933 dmu_tx_t *tx)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	934 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	935 dmu_buf_t **dbp;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	936 int numbufs, i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	937 int err = 0;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	938
2391 2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	939 if (size == 0)
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	940 return (0);
2fa3fd1db808 6447377 ZFS prefetch is inconsistant maybee parents: 2237 diff changeset	941
3638 6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	942 err = dmu_buf_hold_array(os, object, uio->uio_loffset, size,
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	943 FALSE, FTAG, &numbufs, &dbp);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	944 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	945 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	946
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	947 for (i = 0; i < numbufs; i++) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	948 int tocpy;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	949 int bufoff;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	950 dmu_buf_t *db = dbp[i];
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	951
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	952 ASSERT(size > 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	953
3638 6b28ebc717aa 6496357 spec_fsync() is useless on devices that do write caching billm parents: 3547 diff changeset	954 bufoff = uio->uio_loffset - db->db_offset;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	955 tocpy = (int)MIN(db->db_size - bufoff, size);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	956
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	957 ASSERT(i == 0 \|\| i == numbufs-1 \|\| tocpy == db->db_size);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	958
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	959 if (tocpy == db->db_size)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	960 dmu_buf_will_fill(db, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	961 else
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	962 dmu_buf_will_dirty(db, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	963
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	964 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	965 * XXX uiomove could block forever (eg. nfs-backed
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	966 * pages). There needs to be a uiolockdown() function
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	967 * to lock the pages in memory, so that uiomove won't
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	968 * block.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	969 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	970 err = uiomove((char *)db->db_data + bufoff, tocpy,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	971 UIO_WRITE, uio);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	972
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	973 if (tocpy == db->db_size)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	974 dmu_buf_fill_done(db, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	975
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	976 if (err)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	977 break;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	978
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	979 size -= tocpy;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	980 }
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	981 dmu_buf_rele_array(dbp, numbufs, FTAG);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	982 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	983 }
2688 12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	984
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	985 int
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	986 dmu_write_pages(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	987 page_t pp, dmu_tx_t tx)
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	988 {
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	989 dmu_buf_t **dbp;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	990 int numbufs, i;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	991 int err;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	992
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	993 if (size == 0)
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	994 return (0);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	995
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	996 err = dmu_buf_hold_array(os, object, offset, size,
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	997 FALSE, FTAG, &numbufs, &dbp);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	998 if (err)
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	999 return (err);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1000
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1001 for (i = 0; i < numbufs; i++) {
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1002 int tocpy, copied, thiscpy;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1003 int bufoff;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1004 dmu_buf_t *db = dbp[i];
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1005 caddr_t va;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1006
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1007 ASSERT(size > 0);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1008 ASSERT3U(db->db_size, >=, PAGESIZE);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1009
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1010 bufoff = offset - db->db_offset;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1011 tocpy = (int)MIN(db->db_size - bufoff, size);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1012
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1013 ASSERT(i == 0 \|\| i == numbufs-1 \|\| tocpy == db->db_size);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1014
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1015 if (tocpy == db->db_size)
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1016 dmu_buf_will_fill(db, tx);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1017 else
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1018 dmu_buf_will_dirty(db, tx);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1019
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1020 for (copied = 0; copied < tocpy; copied += PAGESIZE) {
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1021 ASSERT3U(pp->p_offset, ==, db->db_offset + bufoff);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1022 thiscpy = MIN(PAGESIZE, tocpy - copied);
7315 cdba25672122 6735592 "zio" vmem arenas are confusing, not reported separately Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7237 diff changeset	1023 va = zfs_map_page(pp, S_READ);
2688 12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1024 bcopy(va, (char *)db->db_data + bufoff, thiscpy);
7315 cdba25672122 6735592 "zio" vmem arenas are confusing, not reported separately Jonathan W Adams <Jonathan.Adams@Sun.COM> parents: 7237 diff changeset	1025 zfs_unmap_page(pp, va);
2688 12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1026 pp = pp->p_next;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1027 bufoff += PAGESIZE;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1028 }
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1029
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1030 if (tocpy == db->db_size)
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1031 dmu_buf_fill_done(db, tx);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1032
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1033 offset += tocpy;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1034 size -= tocpy;
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1035 }
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1036 dmu_buf_rele_array(dbp, numbufs, FTAG);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1037 return (err);
12e2ad22b970 6447701 ZFS hangs when iSCSI Target attempts to initialize its backing store maybee parents: 2676 diff changeset	1038 }
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1039 #endif
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1040
9412 4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1041 /*
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1042 * Allocate a loaned anonymous arc buffer.
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1043 */
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1044 arc_buf_t *
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1045 dmu_request_arcbuf(dmu_buf_t *handle, int size)
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1046 {
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1047 dnode_t dn = ((dmu_buf_impl_t )handle)->db_dnode;
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1048
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1049 return (arc_loan_buf(dn->dn_objset->os_spa, size));
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1050 }
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1051
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1052 /*
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1053 * Free a loaned arc buffer.
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1054 */
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1055 void
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1056 dmu_return_arcbuf(arc_buf_t *buf)
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1057 {
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1058 arc_return_buf(buf, FTAG);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1059 VERIFY(arc_buf_remove_ref(buf, FTAG) == 1);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1060 }
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1061
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1062 /*
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1063 * When possible directly assign passed loaned arc buffer to a dbuf.
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1064 * If this is not possible copy the contents of passed arc buf via
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1065 * dmu_write().
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1066 */
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1067 void
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1068 dmu_assign_arcbuf(dmu_buf_t handle, uint64_t offset, arc_buf_t buf,
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1069 dmu_tx_t *tx)
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1070 {
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1071 dnode_t dn = ((dmu_buf_impl_t )handle)->db_dnode;
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1072 dmu_buf_impl_t *db;
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1073 uint32_t blksz = (uint32_t)arc_buf_size(buf);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1074 uint64_t blkid;
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1075
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1076 rw_enter(&dn->dn_struct_rwlock, RW_READER);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1077 blkid = dbuf_whichblock(dn, offset);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1078 VERIFY((db = dbuf_hold(dn, blkid, FTAG)) != NULL);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1079 rw_exit(&dn->dn_struct_rwlock);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1080
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1081 if (offset == db->db.db_offset && blksz == db->db.db_size) {
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1082 dbuf_assign_arcbuf(db, buf, tx);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1083 dbuf_rele(db, FTAG);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1084 } else {
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1085 dbuf_rele(db, FTAG);
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	1086 dmu_write(dn->dn_objset, dn->dn_object, offset, blksz,
9412 4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1087 buf->b_data, tx);
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1088 dmu_return_arcbuf(buf);
11539 10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	1089 XUIOSTAT_BUMP(xuiostat_wbuf_copied);
9412 4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1090 }
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1091 }
4aefd8704ce0 6717022 ZFS DMU needs zero-copy support Aleksandr Guzovskiy <Aleksandr.Guzovskiy@Sun.COM> parents: 9396 diff changeset	1092
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1093 typedef struct {
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1094 dbuf_dirty_record_t *dsa_dr;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1095 dmu_sync_cb_t *dsa_done;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1096 zgd_t *dsa_zgd;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1097 dmu_tx_t *dsa_tx;
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1098 } dmu_sync_arg_t;
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1099
45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1100 /* ARGSUSED */
45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1101 static void
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7468 diff changeset	1102 dmu_sync_ready(zio_t zio, arc_buf_t buf, void *varg)
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7468 diff changeset	1103 {
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1104 dmu_sync_arg_t *dsa = varg;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1105 dmu_buf_t *db = dsa->dsa_zgd->zgd_db;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1106 dnode_t dn = ((dmu_buf_impl_t )db)->db_dnode;
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7468 diff changeset	1107 blkptr_t *bp = zio->io_bp;
10800 469478b180d9 6880764 fsync on zfs is broken if writes are greater than 32kb on a hard crash and no log attached Neil Perrin <Neil.Perrin@Sun.COM> parents: 10474 diff changeset	1108
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1109 if (zio->io_error == 0) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1110 if (BP_IS_HOLE(bp)) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1111 /*
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1112 * A block of zeros may compress to a hole, but the
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1113 * block size still needs to be known for replay.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1114 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1115 BP_SET_LSIZE(bp, db->db_size);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1116 } else {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1117 ASSERT(BP_GET_TYPE(bp) == dn->dn_type);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1118 ASSERT(BP_GET_LEVEL(bp) == 0);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1119 bp->blk_fill = 1;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1120 }
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7468 diff changeset	1121 }
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7468 diff changeset	1122 }
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7468 diff changeset	1123
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1124 static void
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1125 dmu_sync_late_arrival_ready(zio_t *zio)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1126 {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1127 dmu_sync_ready(zio, NULL, zio->io_private);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1128 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1129
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7468 diff changeset	1130 /* ARGSUSED */
b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7468 diff changeset	1131 static void
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1132 dmu_sync_done(zio_t zio, arc_buf_t buf, void *varg)
45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1133 {
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1134 dmu_sync_arg_t *dsa = varg;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1135 dbuf_dirty_record_t *dr = dsa->dsa_dr;
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1136 dmu_buf_impl_t *db = dr->dr_dbuf;
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1137
10810 b6b161a6ae4a 6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849 Neil Perrin <Neil.Perrin@Sun.COM> parents: 10800 diff changeset	1138 mutex_enter(&db->db_mtx);
b6b161a6ae4a 6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849 Neil Perrin <Neil.Perrin@Sun.COM> parents: 10800 diff changeset	1139 ASSERT(dr->dt.dl.dr_override_state == DR_IN_DMU_SYNC);
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1140 if (zio->io_error == 0) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1141 dr->dt.dl.dr_overridden_by = *zio->io_bp;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1142 dr->dt.dl.dr_override_state = DR_OVERRIDDEN;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1143 dr->dt.dl.dr_copies = zio->io_prop.zp_copies;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1144 if (BP_IS_HOLE(&dr->dt.dl.dr_overridden_by))
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1145 BP_ZERO(&dr->dt.dl.dr_overridden_by);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1146 } else {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1147 dr->dt.dl.dr_override_state = DR_NOT_OVERRIDDEN;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1148 }
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1149 cv_broadcast(&db->db_changed);
10810 b6b161a6ae4a 6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849 Neil Perrin <Neil.Perrin@Sun.COM> parents: 10800 diff changeset	1150 mutex_exit(&db->db_mtx);
b6b161a6ae4a 6892298 buf->b_hdr->b_state != arc_anon, file: ../../common/fs/zfs/arc.c, line: 2849 Neil Perrin <Neil.Perrin@Sun.COM> parents: 10800 diff changeset	1151
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1152 dsa->dsa_done(dsa->dsa_zgd, zio->io_error);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1153
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1154 kmem_free(dsa, sizeof (*dsa));
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1155 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1156
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1157 static void
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1158 dmu_sync_late_arrival_done(zio_t *zio)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1159 {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1160 blkptr_t *bp = zio->io_bp;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1161 dmu_sync_arg_t *dsa = zio->io_private;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1162
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1163 if (zio->io_error == 0 && !BP_IS_HOLE(bp)) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1164 ASSERT(zio->io_bp->blk_birth == zio->io_txg);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1165 ASSERT(zio->io_txg > spa_syncing_txg(zio->io_spa));
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1166 zio_free(zio->io_spa, zio->io_txg, zio->io_bp);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1167 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1168
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1169 dmu_tx_commit(dsa->dsa_tx);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1170
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1171 dsa->dsa_done(dsa->dsa_zgd, zio->io_error);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1172
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1173 kmem_free(dsa, sizeof (*dsa));
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1174 }
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1175
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1176 static int
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1177 dmu_sync_late_arrival(zio_t pio, objset_t os, dmu_sync_cb_t done, zgd_t zgd,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1178 zio_prop_t zp, zbookmark_t zb)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1179 {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1180 dmu_sync_arg_t *dsa;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1181 dmu_tx_t *tx;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1182
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1183 tx = dmu_tx_create(os);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1184 dmu_tx_hold_space(tx, zgd->zgd_db->db_size);
11670 1d964fb5d948 6595532 ZIL is too talkative Neil Perrin <Neil.Perrin@Sun.COM> parents: 11539 diff changeset	1185 if (dmu_tx_assign(tx, TXG_WAIT) != 0) {
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1186 dmu_tx_abort(tx);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1187 return (EIO); /* Make zl_get_data do txg_waited_synced() */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1188 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1189
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1190 dsa = kmem_alloc(sizeof (dmu_sync_arg_t), KM_SLEEP);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1191 dsa->dsa_dr = NULL;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1192 dsa->dsa_done = done;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1193 dsa->dsa_zgd = zgd;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1194 dsa->dsa_tx = tx;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1195
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1196 zio_nowait(zio_write(pio, os->os_spa, dmu_tx_get_txg(tx), zgd->zgd_bp,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1197 zgd->zgd_db->db_data, zgd->zgd_db->db_size, zp,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1198 dmu_sync_late_arrival_ready, dmu_sync_late_arrival_done, dsa,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1199 ZIO_PRIORITY_SYNC_WRITE, ZIO_FLAG_CANFAIL, zb));
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1200
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1201 return (0);
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1202 }
45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1203
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1204 /*
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1205 * Intent log support: sync the block associated with db to disk.
45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1206 * N.B. and XXX: the caller is responsible for making sure that the
45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1207 * data isn't changing while dmu_sync() is writing it.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1208 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1209 * Return values:
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1210 *
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1211 * EEXIST: this txg has already been synced, so there's nothing to to.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1212 * The caller should not log the write.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1213 *
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1214 * ENOENT: the block was dbuf_free_range()'d, so there's nothing to do.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1215 * The caller should not log the write.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1216 *
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1217 * EALREADY: this block is already in the process of being synced.
45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1218 * The caller should track its progress (somehow).
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1219 *
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1220 * EIO: could not do the I/O.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1221 * The caller should do a txg_wait_synced().
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1222 *
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1223 * 0: the I/O has been initiated.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1224 * The caller should log this blkptr in the done callback.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1225 * It is possible that the I/O will fail, in which case
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1226 * the error will be reported to the done callback and
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1227 * propagated to pio from zio_done().
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1228 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1229 int
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1230 dmu_sync(zio_t pio, uint64_t txg, dmu_sync_cb_t done, zgd_t *zgd)
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1231 {
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1232 blkptr_t *bp = zgd->zgd_bp;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1233 dmu_buf_impl_t db = (dmu_buf_impl_t )zgd->zgd_db;
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	1234 objset_t *os = db->db_objset;
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1235 dsl_dataset_t *ds = os->os_dsl_dataset;
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1236 dbuf_dirty_record_t *dr;
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1237 dmu_sync_arg_t *dsa;
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1238 zbookmark_t zb;
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1239 zio_prop_t zp;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1240
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1241 ASSERT(pio != NULL);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1242 ASSERT(BP_IS_HOLE(bp));
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1243 ASSERT(txg != 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1244
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1245 SET_BOOKMARK(&zb, ds->ds_object,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1246 db->db.db_object, db->db_level, db->db_blkid);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1247
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1248 dmu_write_policy(os, db->db_dnode, db->db_level, WP_DMU_SYNC, &zp);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1249
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1250 /*
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1251 * If we're frozen (running ziltest), we always need to generate a bp.
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1252 */
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1253 if (txg > spa_freeze_txg(os->os_spa))
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1254 return (dmu_sync_late_arrival(pio, os, done, zgd, &zp, &zb));
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1255
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1256 /*
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1257 * Grabbing db_mtx now provides a barrier between dbuf_sync_leaf()
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1258 * and us. If we determine that this txg is not yet syncing,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1259 * but it begins to sync a moment later, that's OK because the
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1260 * sync thread will block in dbuf_sync_leaf() until we drop db_mtx.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1261 */
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1262 mutex_enter(&db->db_mtx);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1263
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1264 if (txg <= spa_last_synced_txg(os->os_spa)) {
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1265 /*
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1266 * This txg has already synced. There's nothing to do.
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1267 */
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1268 mutex_exit(&db->db_mtx);
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1269 return (EEXIST);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1270 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1271
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1272 if (txg <= spa_syncing_txg(os->os_spa)) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1273 /*
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1274 * This txg is currently syncing, so we can't mess with
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1275 * the dirty record anymore; just write a new log block.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1276 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1277 mutex_exit(&db->db_mtx);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1278 return (dmu_sync_late_arrival(pio, os, done, zgd, &zp, &zb));
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1279 }
45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1280
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1281 dr = db->db_last_dirty;
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1282 while (dr && dr->dr_txg != txg)
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1283 dr = dr->dr_next;
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1284
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1285 if (dr == NULL) {
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1286 /*
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1287 * There's no dr for this dbuf, so it must have been freed.
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1288 * There's no need to log writes to freed blocks, so we're done.
45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1289 */
45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1290 mutex_exit(&db->db_mtx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1291 return (ENOENT);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1292 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1293
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1294 ASSERT(dr->dr_txg == txg);
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1295 if (dr->dt.dl.dr_override_state == DR_IN_DMU_SYNC \|\|
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1296 dr->dt.dl.dr_override_state == DR_OVERRIDDEN) {
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1297 /*
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1298 * We have already issued a sync write for this buffer,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1299 * or this buffer has already been synced. It could not
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1300 * have been dirtied since, or we would have cleared the state.
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1301 */
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1302 mutex_exit(&db->db_mtx);
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1303 return (EALREADY);
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1304 }
e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1305
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1306 ASSERT(dr->dt.dl.dr_override_state == DR_NOT_OVERRIDDEN);
3547 e396e0a440b1 6512391 DMU should leverage ZIO dependencies to achieve greater parallelism maybee parents: 3444 diff changeset	1307 dr->dt.dl.dr_override_state = DR_IN_DMU_SYNC;
2237 45affe88ed99 6416482 filebench oltp workload hangs in zfs maybee parents: 2199 diff changeset	1308 mutex_exit(&db->db_mtx);
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7468 diff changeset	1309
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1310 dsa = kmem_alloc(sizeof (dmu_sync_arg_t), KM_SLEEP);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1311 dsa->dsa_dr = dr;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1312 dsa->dsa_done = done;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1313 dsa->dsa_zgd = zgd;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1314 dsa->dsa_tx = NULL;
7754 b80e4842ad54 6754011 SPA 3.0: lock breakup, i/o pipeline refactoring, device failure handling Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 7468 diff changeset	1315
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1316 zio_nowait(arc_write(pio, os->os_spa, txg,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1317 bp, dr->dt.dl.dr_data, DBUF_IS_L2CACHEABLE(db), &zp,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1318 dmu_sync_ready, dmu_sync_done, dsa,
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1319 ZIO_PRIORITY_SYNC_WRITE, ZIO_FLAG_CANFAIL, &zb));
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1320
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1321 return (0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1322 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1323
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1324 int
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1325 dmu_object_set_blocksize(objset_t *os, uint64_t object, uint64_t size, int ibs,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1326 dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1327 {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1328 dnode_t *dn;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1329 int err;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1330
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	1331 err = dnode_hold(os, object, FTAG, &dn);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1332 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1333 return (err);
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1334 err = dnode_set_blksz(dn, size, ibs, tx);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1335 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1336 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1337 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1338
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1339 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1340 dmu_object_set_checksum(objset_t *os, uint64_t object, uint8_t checksum,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1341 dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1342 {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1343 dnode_t *dn;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1344
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1345 /* XXX assumes dnode_hold will not get an i/o error */
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	1346 (void) dnode_hold(os, object, FTAG, &dn);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1347 ASSERT(checksum < ZIO_CHECKSUM_FUNCTIONS);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1348 dn->dn_checksum = checksum;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1349 dnode_setdirty(dn, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1350 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1351 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1352
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1353 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1354 dmu_object_set_compress(objset_t *os, uint64_t object, uint8_t compress,
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1355 dmu_tx_t *tx)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1356 {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1357 dnode_t *dn;
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1358
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1359 /* XXX assumes dnode_hold will not get an i/o error */
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	1360 (void) dnode_hold(os, object, FTAG, &dn);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1361 ASSERT(compress < ZIO_COMPRESS_FUNCTIONS);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1362 dn->dn_compress = compress;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1363 dnode_setdirty(dn, tx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1364 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1365 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1366
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1367 int zfs_mdcomp_disable = 0;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1368
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1369 void
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1370 dmu_write_policy(objset_t os, dnode_t dn, int level, int wp, zio_prop_t *zp)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1371 {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1372 dmu_object_type_t type = dn ? dn->dn_type : DMU_OT_OBJSET;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1373 boolean_t ismd = (level > 0 \|\| dmu_ot[type].ot_metadata);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1374 enum zio_checksum checksum = os->os_checksum;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1375 enum zio_compress compress = os->os_compress;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1376 enum zio_checksum dedup_checksum = os->os_dedup_checksum;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1377 boolean_t dedup;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1378 boolean_t dedup_verify = os->os_dedup_verify;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1379 int copies = os->os_copies;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1380
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1381 /*
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1382 * Determine checksum setting.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1383 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1384 if (ismd) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1385 /*
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1386 * Metadata always gets checksummed. If the data
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1387 * checksum is multi-bit correctable, and it's not a
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1388 * ZBT-style checksum, then it's suitable for metadata
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1389 * as well. Otherwise, the metadata checksum defaults
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1390 * to fletcher4.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1391 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1392 if (zio_checksum_table[checksum].ci_correctable < 1 \|\|
11670 1d964fb5d948 6595532 ZIL is too talkative Neil Perrin <Neil.Perrin@Sun.COM> parents: 11539 diff changeset	1393 zio_checksum_table[checksum].ci_eck)
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1394 checksum = ZIO_CHECKSUM_FLETCHER_4;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1395 } else {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1396 checksum = zio_checksum_select(dn->dn_checksum, checksum);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1397 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1398
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1399 /*
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1400 * Determine compression setting.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1401 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1402 if (ismd) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1403 /*
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1404 * XXX -- we should design a compression algorithm
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1405 * that specializes in arrays of bps.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1406 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1407 compress = zfs_mdcomp_disable ? ZIO_COMPRESS_EMPTY :
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1408 ZIO_COMPRESS_LZJB;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1409 } else {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1410 compress = zio_compress_select(dn->dn_compress, compress);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1411 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1412
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1413 /*
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1414 * Determine dedup setting. If we are in dmu_sync(), we won't
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1415 * actually dedup now because that's all done in syncing context;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1416 * but we do want to use the dedup checkum. If the checksum is not
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1417 * strong enough to ensure unique signatures, force dedup_verify.
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1418 */
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1419 dedup = (!ismd && dedup_checksum != ZIO_CHECKSUM_OFF);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1420 if (dedup) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1421 checksum = dedup_checksum;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1422 if (!zio_checksum_table[checksum].ci_dedup)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1423 dedup_verify = 1;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1424 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1425
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1426 if (wp & WP_DMU_SYNC)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1427 dedup = 0;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1428
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1429 if (wp & WP_NOFILL) {
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1430 ASSERT(!ismd && level == 0);
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1431 checksum = ZIO_CHECKSUM_OFF;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1432 compress = ZIO_COMPRESS_OFF;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1433 dedup = B_FALSE;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1434 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1435
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1436 zp->zp_checksum = checksum;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1437 zp->zp_compress = compress;
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	1438 zp->zp_type = (wp & WP_SPILL) ? dn->dn_bonustype : type;
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1439 zp->zp_level = level;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1440 zp->zp_copies = MIN(copies + ismd, spa_max_replication(os->os_spa));
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1441 zp->zp_dedup = dedup;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1442 zp->zp_dedup_verify = dedup && dedup_verify;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1443 }
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1444
1775 e51e26b432c0 6410698 ZFS metadata needs to be more highly replicated (ditto blocks) billm parents: 1731 diff changeset	1445 int
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1446 dmu_offset_next(objset_t os, uint64_t object, boolean_t hole, uint64_t off)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1447 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1448 dnode_t *dn;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1449 int i, err;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1450
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	1451 err = dnode_hold(os, object, FTAG, &dn);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1452 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1453 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1454 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1455 * Sync any current changes before
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1456 * we go trundling through the block pointers.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1457 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1458 for (i = 0; i < TXG_SIZE; i++) {
1596 2e2377ccbf85 6395371 ASSERT in dmu_tx_count_free: blkid + i < dn->dn_phys->dn_nblkptr ahrens parents: 1544 diff changeset	1459 if (list_link_active(&dn->dn_dirty_link[i]))
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1460 break;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1461 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1462 if (i != TXG_SIZE) {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1463 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1464 txg_wait_synced(dmu_objset_pool(os), 0);
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	1465 err = dnode_hold(os, object, FTAG, &dn);
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1466 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1467 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1468 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1469
6992 20c04e18c58c 6573681 deleting a very large file can be slow maybee parents: 5450 diff changeset	1470 err = dnode_next_offset(dn, (hole ? DNODE_FIND_HOLE : 0), off, 1, 1, 0);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1471 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1472
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1473 return (err);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1474 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1475
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1476 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1477 dmu_object_info_from_dnode(dnode_t dn, dmu_object_info_t doi)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1478 {
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1479 dnode_phys_t *dnp;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1480
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1481 rw_enter(&dn->dn_struct_rwlock, RW_READER);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1482 mutex_enter(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1483
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1484 dnp = dn->dn_phys;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1485
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1486 doi->doi_data_block_size = dn->dn_datablksz;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1487 doi->doi_metadata_block_size = dn->dn_indblkshift ?
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1488 1ULL << dn->dn_indblkshift : 0;
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1489 doi->doi_type = dn->dn_type;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1490 doi->doi_bonus_type = dn->dn_bonustype;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1491 doi->doi_bonus_size = dn->dn_bonuslen;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1492 doi->doi_indirection = dn->dn_nlevels;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1493 doi->doi_checksum = dn->dn_checksum;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1494 doi->doi_compress = dn->dn_compress;
10922 e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1495 doi->doi_physical_blocks_512 = (DN_USED_BYTES(dnp) + 256) >> 9;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1496 doi->doi_max_offset = (dnp->dn_maxblkid + 1) * dn->dn_datablksz;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1497 doi->doi_fill_count = 0;
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1498 for (int i = 0; i < dnp->dn_nblkptr; i++)
e2081f502306 PSARC 2009/571 ZFS Deduplication Properties Jeff Bonwick <Jeff.Bonwick@Sun.COM> parents: 10810 diff changeset	1499 doi->doi_fill_count += dnp->dn_blkptr[i].blk_fill;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1500
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1501 mutex_exit(&dn->dn_mtx);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1502 rw_exit(&dn->dn_struct_rwlock);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1503 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1504
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1505 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1506 * Get information on a DMU object.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1507 * If doi is NULL, just indicates whether the object exists.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1508 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1509 int
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1510 dmu_object_info(objset_t os, uint64_t object, dmu_object_info_t doi)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1511 {
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1512 dnode_t *dn;
10298 a0d52501437c 6860996 %temporary clones are not automatically destroyed on error Matthew Ahrens <Matthew.Ahrens@Sun.COM> parents: 10242 diff changeset	1513 int err = dnode_hold(os, object, FTAG, &dn);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1514
1544 938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1515 if (err)
938876158511 PSARC 2006/077 zpool clear eschrock parents: 789 diff changeset	1516 return (err);
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1517
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1518 if (doi != NULL)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1519 dmu_object_info_from_dnode(dn, doi);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1520
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1521 dnode_rele(dn, FTAG);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1522 return (0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1523 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1524
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1525 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1526 * As above, but faster; can be used when you have a held dbuf in hand.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1527 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1528 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1529 dmu_object_info_from_db(dmu_buf_t db, dmu_object_info_t doi)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1530 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1531 dmu_object_info_from_dnode(((dmu_buf_impl_t *)db)->db_dnode, doi);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1532 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1533
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1534 /*
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1535 * Faster still when you only care about the size.
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1536 * This is specifically optimized for zfs_getattr().
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1537 */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1538 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1539 dmu_object_size_from_db(dmu_buf_t db, uint32_t blksize, u_longlong_t *nblk512)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1540 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1541 dnode_t dn = ((dmu_buf_impl_t )db)->db_dnode;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1542
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1543 *blksize = dn->dn_datablksz;
2082 76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1775 diff changeset	1544 /* add 1 for dnode space */
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1775 diff changeset	1545 *nblk512 = ((DN_USED_BYTES(dn->dn_phys) + SPA_MINBLOCKSIZE/2) >>
76b439ec3ac1 PSARC 2006/223 ZFS Hot Spares eschrock parents: 1775 diff changeset	1546 SPA_MINBLOCKSHIFT) + 1;
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1547 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1548
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1549 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1550 byteswap_uint64_array(void *vbuf, size_t size)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1551 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1552 uint64_t *buf = vbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1553 size_t count = size >> 3;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1554 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1555
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1556 ASSERT((size & 7) == 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1557
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1558 for (i = 0; i < count; i++)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1559 buf[i] = BSWAP_64(buf[i]);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1560 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1561
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1562 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1563 byteswap_uint32_array(void *vbuf, size_t size)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1564 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1565 uint32_t *buf = vbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1566 size_t count = size >> 2;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1567 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1568
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1569 ASSERT((size & 3) == 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1570
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1571 for (i = 0; i < count; i++)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1572 buf[i] = BSWAP_32(buf[i]);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1573 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1574
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1575 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1576 byteswap_uint16_array(void *vbuf, size_t size)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1577 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1578 uint16_t *buf = vbuf;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1579 size_t count = size >> 1;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1580 int i;
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1581
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1582 ASSERT((size & 1) == 0);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1583
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1584 for (i = 0; i < count; i++)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1585 buf[i] = BSWAP_16(buf[i]);
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1586 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1587
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1588 /* ARGSUSED */
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1589 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1590 byteswap_uint8_array(void *vbuf, size_t size)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1591 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1592 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1593
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1594 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1595 dmu_init(void)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1596 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1597 dbuf_init();
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1598 dnode_init();
10474 0e96dd3b905a 6859997 zfs caching performance problem Rich Morris <Richard.Morris@Sun.COM> parents: 10298 diff changeset	1599 zfetch_init();
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1600 arc_init();
5450 b25030891c44 PSARC 2007/618 ZFS L2ARC brendan parents: 5339 diff changeset	1601 l2arc_init();
11539 10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	1602 xuio_stat_init();
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	1603 sa_cache_init();
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1604 }
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1605
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1606 void
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1607 dmu_fini(void)
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1608 {
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1609 arc_fini();
10474 0e96dd3b905a 6859997 zfs caching performance problem Rich Morris <Richard.Morris@Sun.COM> parents: 10298 diff changeset	1610 zfetch_fini();
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1611 dnode_fini();
b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1612 dbuf_fini();
5450 b25030891c44 PSARC 2007/618 ZFS L2ARC brendan parents: 5339 diff changeset	1613 l2arc_fini();
11539 10d35fc3d7fd 6873106 Need a mechanism to share buffers between fs modules chunli zhang - Sun Microsystems - Irvine United States <Chunli.Zhang@Sun.COM> parents: 10922 diff changeset	1614 xuio_stat_fini();
11935 538c866aaac6 6716117 ZFS needs native system attribute infrastructure Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> parents: 11670 diff changeset	1615 sa_cache_fini();
789 b348f31ed315 PSARC 2002/240 ZFS ahrens parents: diff changeset	1616 }

Mercurial > illumos > illumos-gate

annotate usr/src/uts/common/fs/zfs/dmu.c @ 11935:538c866aaac6