diff options
Diffstat (limited to 'sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c')
| -rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c index 774f354..1faebc1 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c @@ -1593,16 +1593,16 @@ dsl_dataset_space(dsl_dataset_t *ds, } boolean_t -dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds) +dsl_dataset_modified_since_snap(dsl_dataset_t *ds, dsl_dataset_t *snap) { dsl_pool_t *dp = ds->ds_dir->dd_pool; ASSERT(dsl_pool_config_held(dp)); - if (ds->ds_prev == NULL) + if (snap == NULL) return (B_FALSE); if (ds->ds_phys->ds_bp.blk_birth > - ds->ds_prev->ds_phys->ds_creation_txg) { - objset_t *os, *os_prev; + snap->ds_phys->ds_creation_txg) { + objset_t *os, *os_snap; /* * It may be that only the ZIL differs, because it was * reset in the head. Don't count that as being @@ -1610,10 +1610,10 @@ dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds) */ if (dmu_objset_from_ds(ds, &os) != 0) return (B_TRUE); - if (dmu_objset_from_ds(ds->ds_prev, &os_prev) != 0) + if (dmu_objset_from_ds(snap, &os_snap) != 0) return (B_TRUE); return (bcmp(&os->os_phys->os_meta_dnode, - &os_prev->os_phys->os_meta_dnode, + &os_snap->os_phys->os_meta_dnode, sizeof (os->os_phys->os_meta_dnode)) != 0); } return (B_FALSE); @@ -2436,15 +2436,14 @@ dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone, dsl_dataset_is_snapshot(origin_head)) return (SET_ERROR(EINVAL)); - /* the branch point should be just before them */ - if (clone->ds_prev != origin_head->ds_prev) + /* if we are not forcing, the branch point should be just before them */ + if (!force && clone->ds_prev != origin_head->ds_prev) return (SET_ERROR(EINVAL)); /* clone should be the clone (unless they are unrelated) */ if (clone->ds_prev != NULL && clone->ds_prev != clone->ds_dir->dd_pool->dp_origin_snap && - origin_head->ds_object != - clone->ds_prev->ds_phys->ds_next_snap_obj) + origin_head->ds_dir != clone->ds_prev->ds_dir) return (SET_ERROR(EINVAL)); /* the clone should be a child of the origin */ @@ -2452,7 +2451,8 @@ dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone, return (SET_ERROR(EINVAL)); /* origin_head shouldn't be modified unless 'force' */ - if (!force && dsl_dataset_modified_since_lastsnap(origin_head)) + if (!force && + dsl_dataset_modified_since_snap(origin_head, origin_head->ds_prev)) return (SET_ERROR(ETXTBSY)); /* origin_head should have no long holds (e.g. is not mounted) */ @@ -2489,6 +2489,7 @@ dsl_dataset_clone_swap_sync_impl(dsl_dataset_t *clone, ASSERT(clone->ds_reserved == 0); ASSERT(origin_head->ds_quota == 0 || clone->ds_phys->ds_unique_bytes <= origin_head->ds_quota); + ASSERT3P(clone->ds_prev, ==, origin_head->ds_prev); dmu_buf_will_dirty(clone->ds_dbuf, tx); dmu_buf_will_dirty(origin_head->ds_dbuf, tx); |
