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Illumos 5912 - full stream can not be force-received into a dataset if it has a snapshot

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5912 full stream can not be force-received into a dataset if it has a snapshot
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Paul Dagnelie <pcd@delphix.com>
Approved by: Dan McDonald <danmcd@omniti.com>

References:
  https://www.illumos.org/issues/5912
  https://github.com/illumos/illumos-gate/commit/5bae108

Ported-by: Andriy Gapon <avg@FreeBSD.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3549
This commit is contained in:
Andriy Gapon 2015-07-02 16:03:31 +03:00 committed by Brian Behlendorf
parent a7b10a9319
commit cf50a2b08f
1 changed files with 6 additions and 4 deletions
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10
module/zfs/dmu_send.c
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@ -1036,10 +1036,12 @@ recv_begin_check_existing_impl(dmu_recv_begin_arg_t *drba, dsl_dataset_t *ds,
dsl_dataset_rele(snap, FTAG);
} else {
/* if full, most recent snapshot must be $ORIGIN */
if (dsl_dataset_phys(ds)->ds_prev_snap_txg >= TXG_INITIAL)
return (SET_ERROR(ENODEV));
drba->drba_snapobj = dsl_dataset_phys(ds)->ds_prev_snap_obj;
/* if full, then must be forced */
if (!drba->drba_cookie->drc_force)
return (SET_ERROR(EEXIST));
/* start from $ORIGIN@$ORIGIN, if supported */
drba->drba_snapobj = dp->dp_origin_snap != NULL ?
dp->dp_origin_snap->ds_object : 0;
}
return (0);