diff options
| author | Keith M Wesolowski <[email protected]> | 2013-07-27 10:51:50 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2013-11-04 11:18:14 -0800 |
| commit | 96c2e961938d4018ddb393fa60e004d8a91a58e9 (patch) | |
| tree | 6f831e836b96ef81a5daac0ef712df6ac394c492 /module/zfs | |
| parent | 1a077756e8ba946a55f999fa1cb5f0e7dcb9aa81 (diff) | |
Illumos #3894
3894 zfs should not allow snapshot of inconsistent dataset
Reviewed by: Matthew Ahrens <[email protected]>
Approved by: Gordon Ross <[email protected]>
References:
https://www.illumos.org/issues/3894
illumos/illumos-gate@ca48f36f20f6098ceb19d5b084b6b3d4b8eca9fa
Ported-by: Richard Yao <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Issue #1775
Diffstat (limited to 'module/zfs')
| -rw-r--r-- | module/zfs/dmu_send.c | 4 | ||||
| -rw-r--r-- | module/zfs/dsl_dataset.c | 19 |
2 files changed, 18 insertions, 5 deletions
diff --git a/module/zfs/dmu_send.c b/module/zfs/dmu_send.c index 87744cb72..e80631b48 100644 --- a/module/zfs/dmu_send.c +++ b/module/zfs/dmu_send.c @@ -1584,7 +1584,7 @@ dmu_recv_end_check(void *arg, dmu_tx_t *tx) 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); @@ -1592,7 +1592,7 @@ dmu_recv_end_check(void *arg, dmu_tx_t *tx) 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); } diff --git a/module/zfs/dsl_dataset.c b/module/zfs/dsl_dataset.c index 5ed3e8e87..16d5dad49 100644 --- a/module/zfs/dsl_dataset.c +++ b/module/zfs/dsl_dataset.c @@ -929,7 +929,7 @@ 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; @@ -955,6 +955,18 @@ dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname, 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); @@ -991,7 +1003,7 @@ dsl_dataset_snapshot_check(void *arg, dmu_tx_t *tx) 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); } @@ -1243,7 +1255,8 @@ dsl_dataset_snapshot_tmp_check(void *arg, dmu_tx_t *tx) 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); |