Date: Tue, 18 Feb 2014 14:06:59 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r262159 - in stable/8: cddl/contrib/opensolaris/cmd/zfs cddl/contrib/opensolaris/lib/libzfs/common sys/cddl/contrib/opensolaris/common/zfs sys/cddl/contrib/opensolaris/uts/common/fs/zfs... Message-ID: <201402181406.s1IE6x66063993@svn.freebsd.org>
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Author: avg Date: Tue Feb 18 14:06:59 2014 New Revision: 262159 URL: http://svnweb.freebsd.org/changeset/base/262159 Log: MFC r253819: MFV r253781 + r253871: 3894 zfs should not allow snapshot of inconsistent dataset Modified: stable/8/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c stable/8/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfs_prop.c stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_send.c stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dsl_dataset.h stable/8/sys/cddl/contrib/opensolaris/uts/common/sys/fs/zfs.h Directory Properties: stable/8/cddl/contrib/opensolaris/ (props changed) stable/8/cddl/contrib/opensolaris/cmd/zfs/ (props changed) stable/8/cddl/contrib/opensolaris/lib/libzfs/ (props changed) stable/8/sys/ (props changed) stable/8/sys/cddl/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) Modified: stable/8/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c ============================================================================== --- stable/8/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c Tue Feb 18 14:06:41 2014 (r262158) +++ stable/8/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c Tue Feb 18 14:06:59 2014 (r262159) @@ -3519,6 +3519,12 @@ zfs_snapshot_cb(zfs_handle_t *zhp, void int rv = 0; int error; + if (sd->sd_recursive && + zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) { + zfs_close(zhp); + return (0); + } + error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname); if (error == -1) nomem(); Modified: stable/8/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c ============================================================================== --- stable/8/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c Tue Feb 18 14:06:41 2014 (r262158) +++ stable/8/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c Tue Feb 18 14:06:59 2014 (r262159) @@ -1885,6 +1885,10 @@ get_numeric_property(zfs_handle_t *zhp, zcmd_free_nvlists(&zc); break; + case ZFS_PROP_INCONSISTENT: + *val = zhp->zfs_dmustats.dds_inconsistent; + break; + default: switch (zfs_prop_get_type(prop)) { case PROP_TYPE_NUMBER: @@ -3379,13 +3383,16 @@ zfs_snapshot_cb(zfs_handle_t *zhp, void char name[ZFS_MAXNAMELEN]; int rv = 0; - (void) snprintf(name, sizeof (name), - "%s@%s", zfs_get_name(zhp), sd->sd_snapname); + if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) { + (void) snprintf(name, sizeof (name), + "%s@%s", zfs_get_name(zhp), sd->sd_snapname); - fnvlist_add_boolean(sd->sd_nvl, name); + fnvlist_add_boolean(sd->sd_nvl, name); - rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); + rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd); + } zfs_close(zhp); + return (rv); } Modified: stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfs_prop.c ============================================================================== --- stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfs_prop.c Tue Feb 18 14:06:41 2014 (r262158) +++ stable/8/sys/cddl/contrib/opensolaris/common/zfs/zfs_prop.c Tue Feb 18 14:06:59 2014 (r262159) @@ -397,6 +397,8 @@ zfs_prop_init(void) PROP_READONLY, ZFS_TYPE_DATASET, "UNIQUE"); zprop_register_hidden(ZFS_PROP_OBJSETID, "objsetid", PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_DATASET, "OBJSETID"); + zprop_register_hidden(ZFS_PROP_INCONSISTENT, "inconsistent", + PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_DATASET, "INCONSISTENT"); /* oddball properties */ zprop_register_impl(ZFS_PROP_CREATION, "creation", PROP_TYPE_NUMBER, 0, Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_send.c ============================================================================== --- stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_send.c Tue Feb 18 14:06:41 2014 (r262158) +++ stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_send.c Tue Feb 18 14:06:59 2014 (r262159) @@ -1648,7 +1648,7 @@ dmu_recv_end_check(void *arg, dmu_tx_t * return (error); } error = dsl_dataset_snapshot_check_impl(origin_head, - drc->drc_tosnap, tx); + drc->drc_tosnap, tx, B_TRUE); dsl_dataset_rele(origin_head, FTAG); if (error != 0) return (error); @@ -1656,7 +1656,7 @@ dmu_recv_end_check(void *arg, dmu_tx_t * error = dsl_destroy_head_check_impl(drc->drc_ds, 1); } else { error = dsl_dataset_snapshot_check_impl(drc->drc_ds, - drc->drc_tosnap, tx); + drc->drc_tosnap, tx, B_TRUE); } return (error); } Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c ============================================================================== --- stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c Tue Feb 18 14:06:41 2014 (r262158) +++ stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c Tue Feb 18 14:06:59 2014 (r262159) @@ -994,7 +994,7 @@ typedef struct dsl_dataset_snapshot_arg int dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname, - dmu_tx_t *tx) + dmu_tx_t *tx, boolean_t recv) { int error; uint64_t value; @@ -1020,6 +1020,18 @@ dsl_dataset_snapshot_check_impl(dsl_data if (error != ENOENT) return (error); + /* + * We don't allow taking snapshots of inconsistent datasets, such as + * those into which we are currently receiving. However, if we are + * creating this snapshot as part of a receive, this check will be + * executed atomically with respect to the completion of the receive + * itself but prior to the clearing of DS_FLAG_INCONSISTENT; in this + * case we ignore this, knowing it will be fixed up for us shortly in + * dmu_recv_end_sync(). + */ + if (!recv && DS_IS_INCONSISTENT(ds)) + return (SET_ERROR(EBUSY)); + error = dsl_dataset_snapshot_reserve_space(ds, tx); if (error != 0) return (error); @@ -1056,7 +1068,7 @@ dsl_dataset_snapshot_check(void *arg, dm error = dsl_dataset_hold(dp, dsname, FTAG, &ds); if (error == 0) { error = dsl_dataset_snapshot_check_impl(ds, - atp + 1, tx); + atp + 1, tx, B_FALSE); dsl_dataset_rele(ds, FTAG); } @@ -1322,7 +1334,8 @@ dsl_dataset_snapshot_tmp_check(void *arg if (error != 0) return (error); - error = dsl_dataset_snapshot_check_impl(ds, ddsta->ddsta_snapname, tx); + error = dsl_dataset_snapshot_check_impl(ds, ddsta->ddsta_snapname, + tx, B_FALSE); if (error != 0) { dsl_dataset_rele(ds, FTAG); return (error); Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dsl_dataset.h ============================================================================== --- stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dsl_dataset.h Tue Feb 18 14:06:41 2014 (r262158) +++ stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dsl_dataset.h Tue Feb 18 14:06:59 2014 (r262159) @@ -251,7 +251,7 @@ int dsl_dataset_clone_swap_check_impl(ds void dsl_dataset_clone_swap_sync_impl(dsl_dataset_t *clone, dsl_dataset_t *origin_head, dmu_tx_t *tx); int dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname, - dmu_tx_t *tx); + dmu_tx_t *tx, boolean_t recv); void dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, const char *snapname, dmu_tx_t *tx); Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/sys/fs/zfs.h ============================================================================== --- stable/8/sys/cddl/contrib/opensolaris/uts/common/sys/fs/zfs.h Tue Feb 18 14:06:41 2014 (r262158) +++ stable/8/sys/cddl/contrib/opensolaris/uts/common/sys/fs/zfs.h Tue Feb 18 14:06:59 2014 (r262159) @@ -143,6 +143,7 @@ typedef enum { ZFS_PROP_CLONES, ZFS_PROP_LOGICALUSED, ZFS_PROP_LOGICALREFERENCED, + ZFS_PROP_INCONSISTENT, /* not exposed to the user */ ZFS_NUM_PROPS } zfs_prop_t;
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