zfs_log.c revision ec533521f091387e2911769818ae4be26219fca2
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER START
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The contents of this file are subject to the terms of the
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * Common Development and Distribution License (the "License").
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * You may not use this file except in compliance with the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
fa9e4066f08beec538e775443c5be79dd423fcabahrens * or http://www.opensolaris.org/os/licensing.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * See the License for the specific language governing permissions
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and limitations under the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * When distributing Covered Code, include this CDDL HEADER in each
fa9e4066f08beec538e775443c5be79dd423fcabahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If applicable, add the following below this CDDL HEADER, with the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * fields enclosed by brackets "[]" replaced with your own identifying
fa9e4066f08beec538e775443c5be79dd423fcabahrens * information: Portions Copyright [yyyy] [name of copyright owner]
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER END
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
893a6d32980d24be1349478f44169009d4801c25ahrens * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Use is subject to license terms.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#pragma ident "%Z%%M% %I% %E% SMI"
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/types.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/param.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/systm.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/sysmacros.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/cmn_err.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/kmem.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/thread.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/file.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/vfs.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zfs_znode.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zfs_dir.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zil.h>
6ce0521ac291be36119f359237066c4fb8088683perrin#include <sys/zil_impl.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/byteorder.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/policy.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/stat.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/mode.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/acl.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/dmu.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/spa.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/ddi.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * All the functions in this file are used to construct the log entries
fa9e4066f08beec538e775443c5be79dd423fcabahrens * to record transactions. They allocate * a intent log transaction
fa9e4066f08beec538e775443c5be79dd423fcabahrens * structure (itx_t) and save within it all the information necessary to
fa9e4066f08beec538e775443c5be79dd423fcabahrens * possibly replay the transaction. The itx is then assigned a sequence
fa9e4066f08beec538e775443c5be79dd423fcabahrens * number and inserted in the in-memory list anchored in the zilog.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_log_create() is used to handle TX_CREATE, TX_MKDIR and TX_MKXATTR
fa9e4066f08beec538e775443c5be79dd423fcabahrens * transactions.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrinvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_log_create(zilog_t *zilog, dmu_tx_t *tx, int txtype,
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *dzp, znode_t *zp, char *name)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx_t *itx;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr_create_t *lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens size_t namesize = strlen(name) + 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zilog == NULL)
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr = (lr_create_t *)&itx->itx_lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_doid = dzp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_foid = zp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_mode = zp->z_phys->zp_mode;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_uid = zp->z_phys->zp_uid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_gid = zp->z_phys->zp_gid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_gen = zp->z_phys->zp_gen;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_crtime[0] = zp->z_phys->zp_crtime[0];
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_crtime[1] = zp->z_phys->zp_crtime[1];
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_rdev = zp->z_phys->zp_rdev;
fa9e4066f08beec538e775443c5be79dd423fcabahrens bcopy(name, (char *)(lr + 1), namesize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens seq = zil_itx_assign(zilog, itx, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens dzp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_log_remove() handles both TX_REMOVE and TX_RMDIR transactions.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrinvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_log_remove(zilog_t *zilog, dmu_tx_t *tx, int txtype,
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *dzp, char *name)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx_t *itx;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr_remove_t *lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens size_t namesize = strlen(name) + 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zilog == NULL)
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr = (lr_remove_t *)&itx->itx_lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_doid = dzp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens bcopy(name, (char *)(lr + 1), namesize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens seq = zil_itx_assign(zilog, itx, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens dzp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_log_link() handles TX_LINK transactions.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrinvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_log_link(zilog_t *zilog, dmu_tx_t *tx, int txtype,
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *dzp, znode_t *zp, char *name)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx_t *itx;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr_link_t *lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens size_t namesize = strlen(name) + 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zilog == NULL)
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx = zil_itx_create(txtype, sizeof (*lr) + namesize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr = (lr_link_t *)&itx->itx_lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_doid = dzp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_link_obj = zp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens bcopy(name, (char *)(lr + 1), namesize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens seq = zil_itx_assign(zilog, itx, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens dzp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_log_symlink() handles TX_SYMLINK transactions.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrinvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_log_symlink(zilog_t *zilog, dmu_tx_t *tx, int txtype,
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *dzp, znode_t *zp, char *name, char *link)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx_t *itx;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr_create_t *lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens size_t namesize = strlen(name) + 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens size_t linksize = strlen(link) + 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zilog == NULL)
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx = zil_itx_create(txtype, sizeof (*lr) + namesize + linksize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr = (lr_create_t *)&itx->itx_lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_doid = dzp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_foid = zp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_mode = zp->z_phys->zp_mode;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_uid = zp->z_phys->zp_uid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_gid = zp->z_phys->zp_gid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_gen = zp->z_phys->zp_gen;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_crtime[0] = zp->z_phys->zp_crtime[0];
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_crtime[1] = zp->z_phys->zp_crtime[1];
fa9e4066f08beec538e775443c5be79dd423fcabahrens bcopy(name, (char *)(lr + 1), namesize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens bcopy(link, (char *)(lr + 1) + namesize, linksize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens seq = zil_itx_assign(zilog, itx, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens dzp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_log_rename() handles TX_RENAME transactions.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrinvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_log_rename(zilog_t *zilog, dmu_tx_t *tx, int txtype,
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *sdzp, char *sname, znode_t *tdzp, char *dname, znode_t *szp)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx_t *itx;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr_rename_t *lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens size_t snamesize = strlen(sname) + 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens size_t dnamesize = strlen(dname) + 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zilog == NULL)
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx = zil_itx_create(txtype, sizeof (*lr) + snamesize + dnamesize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr = (lr_rename_t *)&itx->itx_lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_sdoid = sdzp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_tdoid = tdzp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens bcopy(sname, (char *)(lr + 1), snamesize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens bcopy(dname, (char *)(lr + 1) + snamesize, dnamesize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens seq = zil_itx_assign(zilog, itx, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens sdzp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens tdzp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens szp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_log_write() handles TX_WRITE transactions.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
c5c6ffa0498b9c8555798756141b4a3061a138c1maybeessize_t zfs_immediate_write_sz = 32768;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
6ce0521ac291be36119f359237066c4fb8088683perrin#define ZIL_MAX_LOG_DATA (SPA_MAXBLOCKSIZE - sizeof (zil_trailer_t) - \
6ce0521ac291be36119f359237066c4fb8088683perrin sizeof (lr_write_t))
6ce0521ac291be36119f359237066c4fb8088683perrin
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrinvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_log_write(zilog_t *zilog, dmu_tx_t *tx, int txtype,
6ce0521ac291be36119f359237066c4fb8088683perrin znode_t *zp, offset_t off, ssize_t resid, int ioflag)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin itx_wr_state_t write_state;
6ce0521ac291be36119f359237066c4fb8088683perrin boolean_t slogging;
ec533521f091387e2911769818ae4be26219fca2fr uintptr_t fsync_cnt;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
893a6d32980d24be1349478f44169009d4801c25ahrens if (zilog == NULL || zp->z_unlinked)
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin /*
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * Writes are handled in three different ways:
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin *
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * WR_INDIRECT:
6ce0521ac291be36119f359237066c4fb8088683perrin * If the write is greater than zfs_immediate_write_sz and there are
6ce0521ac291be36119f359237066c4fb8088683perrin * no separate logs in this pool then later *if* we need to log the
6ce0521ac291be36119f359237066c4fb8088683perrin * write then dmu_sync() is used to immediately write the block and
6ce0521ac291be36119f359237066c4fb8088683perrin * its block pointer is put in the log record.
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * WR_COPIED:
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * If we know we'll immediately be committing the
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * transaction (FDSYNC (O_DSYNC)), the we allocate a larger
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * log record here for the data and copy the data in.
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * WR_NEED_COPY:
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * Otherwise we don't allocate a buffer, and *if* we need to
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * flush the write later then a buffer is allocated and
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin * we retrieve the data using the dmu.
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin */
6ce0521ac291be36119f359237066c4fb8088683perrin slogging = spa_has_slogs(zilog->zl_spa);
6ce0521ac291be36119f359237066c4fb8088683perrin if (resid > zfs_immediate_write_sz && !slogging)
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin write_state = WR_INDIRECT;
feb08c6bb47ceffa5bb7a70f2c0549113f40fcc5billm else if (ioflag & FDSYNC)
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin write_state = WR_COPIED;
feb08c6bb47ceffa5bb7a70f2c0549113f40fcc5billm else
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin write_state = WR_NEED_COPY;
feb08c6bb47ceffa5bb7a70f2c0549113f40fcc5billm
ec533521f091387e2911769818ae4be26219fca2fr if ((fsync_cnt = (uintptr_t)tsd_get(zfs_fsyncer_key)) != 0) {
ec533521f091387e2911769818ae4be26219fca2fr (void) tsd_set(zfs_fsyncer_key, (void *)(fsync_cnt - 1));
ec533521f091387e2911769818ae4be26219fca2fr }
ec533521f091387e2911769818ae4be26219fca2fr
6ce0521ac291be36119f359237066c4fb8088683perrin while (resid) {
6ce0521ac291be36119f359237066c4fb8088683perrin itx_t *itx;
6ce0521ac291be36119f359237066c4fb8088683perrin lr_write_t *lr;
6ce0521ac291be36119f359237066c4fb8088683perrin ssize_t len;
6ce0521ac291be36119f359237066c4fb8088683perrin
6ce0521ac291be36119f359237066c4fb8088683perrin /*
6ce0521ac291be36119f359237066c4fb8088683perrin * If there are slogs and the write would overflow the largest
6ce0521ac291be36119f359237066c4fb8088683perrin * block, then because we don't want to use the main pool
6ce0521ac291be36119f359237066c4fb8088683perrin * to dmu_sync, we have to split the write.
6ce0521ac291be36119f359237066c4fb8088683perrin */
6ce0521ac291be36119f359237066c4fb8088683perrin if (slogging && resid > ZIL_MAX_LOG_DATA)
6ce0521ac291be36119f359237066c4fb8088683perrin len = SPA_MAXBLOCKSIZE >> 1;
6ce0521ac291be36119f359237066c4fb8088683perrin else
6ce0521ac291be36119f359237066c4fb8088683perrin len = resid;
6ce0521ac291be36119f359237066c4fb8088683perrin
6ce0521ac291be36119f359237066c4fb8088683perrin itx = zil_itx_create(txtype, sizeof (*lr) +
6ce0521ac291be36119f359237066c4fb8088683perrin (write_state == WR_COPIED ? len : 0));
6ce0521ac291be36119f359237066c4fb8088683perrin lr = (lr_write_t *)&itx->itx_lr;
6ce0521ac291be36119f359237066c4fb8088683perrin if (write_state == WR_COPIED && dmu_read(zp->z_zfsvfs->z_os,
6ce0521ac291be36119f359237066c4fb8088683perrin zp->z_id, off, len, lr + 1) != 0) {
feb08c6bb47ceffa5bb7a70f2c0549113f40fcc5billm kmem_free(itx, offsetof(itx_t, itx_lr) +
feb08c6bb47ceffa5bb7a70f2c0549113f40fcc5billm itx->itx_lr.lrc_reclen);
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin itx = zil_itx_create(txtype, sizeof (*lr));
feb08c6bb47ceffa5bb7a70f2c0549113f40fcc5billm lr = (lr_write_t *)&itx->itx_lr;
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin write_state = WR_NEED_COPY;
104e2ed78d9ef0a0f89f320108b8ca29ca3850d5perrin }
feb08c6bb47ceffa5bb7a70f2c0549113f40fcc5billm
6ce0521ac291be36119f359237066c4fb8088683perrin itx->itx_wr_state = write_state;
6ce0521ac291be36119f359237066c4fb8088683perrin lr->lr_foid = zp->z_id;
6ce0521ac291be36119f359237066c4fb8088683perrin lr->lr_offset = off;
6ce0521ac291be36119f359237066c4fb8088683perrin lr->lr_length = len;
6ce0521ac291be36119f359237066c4fb8088683perrin lr->lr_blkoff = 0;
6ce0521ac291be36119f359237066c4fb8088683perrin BP_ZERO(&lr->lr_blkptr);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
6ce0521ac291be36119f359237066c4fb8088683perrin itx->itx_private = zp->z_zfsvfs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ec533521f091387e2911769818ae4be26219fca2fr if ((zp->z_sync_cnt != 0) || (fsync_cnt != 0))
ec533521f091387e2911769818ae4be26219fca2fr itx->itx_sync = B_TRUE;
ec533521f091387e2911769818ae4be26219fca2fr else
ec533521f091387e2911769818ae4be26219fca2fr itx->itx_sync = B_FALSE;
ec533521f091387e2911769818ae4be26219fca2fr
6ce0521ac291be36119f359237066c4fb8088683perrin zp->z_last_itx = zil_itx_assign(zilog, itx, tx);
6ce0521ac291be36119f359237066c4fb8088683perrin
6ce0521ac291be36119f359237066c4fb8088683perrin off += len;
6ce0521ac291be36119f359237066c4fb8088683perrin resid -= len;
6ce0521ac291be36119f359237066c4fb8088683perrin }
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_log_truncate() handles TX_TRUNCATE transactions.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrinvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_log_truncate(zilog_t *zilog, dmu_tx_t *tx, int txtype,
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *zp, uint64_t off, uint64_t len)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx_t *itx;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr_truncate_t *lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
893a6d32980d24be1349478f44169009d4801c25ahrens if (zilog == NULL || zp->z_unlinked)
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx = zil_itx_create(txtype, sizeof (*lr));
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr = (lr_truncate_t *)&itx->itx_lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_foid = zp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_offset = off;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_length = len;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
67bd71c6cc629bab3aa0d595c624a667f1574254perrin itx->itx_sync = (zp->z_sync_cnt != 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens seq = zil_itx_assign(zilog, itx, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_log_setattr() handles TX_SETATTR transactions.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrinvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_log_setattr(zilog_t *zilog, dmu_tx_t *tx, int txtype,
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *zp, vattr_t *vap, uint_t mask_applied)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx_t *itx;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr_setattr_t *lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
893a6d32980d24be1349478f44169009d4801c25ahrens if (zilog == NULL || zp->z_unlinked)
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx = zil_itx_create(txtype, sizeof (*lr));
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr = (lr_setattr_t *)&itx->itx_lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_foid = zp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_mask = (uint64_t)mask_applied;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_mode = (uint64_t)vap->va_mode;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_uid = (uint64_t)vap->va_uid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_gid = (uint64_t)vap->va_gid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_size = (uint64_t)vap->va_size;
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_TIME_ENCODE(&vap->va_atime, lr->lr_atime);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZFS_TIME_ENCODE(&vap->va_mtime, lr->lr_mtime);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
67bd71c6cc629bab3aa0d595c624a667f1574254perrin itx->itx_sync = (zp->z_sync_cnt != 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens seq = zil_itx_assign(zilog, itx, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_log_acl() handles TX_ACL transactions.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrinvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, int txtype,
fa9e4066f08beec538e775443c5be79dd423fcabahrens znode_t *zp, int aclcnt, ace_t *z_ace)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx_t *itx;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr_acl_t *lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
893a6d32980d24be1349478f44169009d4801c25ahrens if (zilog == NULL || zp->z_unlinked)
b19a79ec1a527828a60c4d325ccd8dcbeb2b2e8bperrin return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens itx = zil_itx_create(txtype, sizeof (*lr) + aclcnt * sizeof (ace_t));
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr = (lr_acl_t *)&itx->itx_lr;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_foid = zp->z_id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens lr->lr_aclcnt = (uint64_t)aclcnt;
fa9e4066f08beec538e775443c5be79dd423fcabahrens bcopy(z_ace, (ace_t *)(lr + 1), aclcnt * sizeof (ace_t));
fa9e4066f08beec538e775443c5be79dd423fcabahrens
67bd71c6cc629bab3aa0d595c624a667f1574254perrin itx->itx_sync = (zp->z_sync_cnt != 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens seq = zil_itx_assign(zilog, itx, tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zp->z_last_itx = seq;
fa9e4066f08beec538e775443c5be79dd423fcabahrens}