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Allow sending corrupt snapshots even if metadata is corrupted 

When zfs_send_corrupt_data is set, use the TRAVERSE_HARD flag,
so traverse_visitbp() will not fail with ECKSUM if a blockpointer
cannot be read, but rather will continue and send the objects it can.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Sponsored-By: Klara Inc.
Sponsored-By: WHC Online Solutions Inc.
Closes #12541
This commit is contained in:
Allan Jude 2021-09-09 10:17:31 -04:00 committed by Tony Hutter
parent 7d70f1e099
commit cea0752f8d
1 changed files with 2 additions and 0 deletions
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2
module/zfs/dmu_send.c
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@ -2054,6 +2054,8 @@ setup_to_thread(struct send_thread_arg *to_arg, objset_t *to_os,
to_arg->flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA; to_arg->flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA;
if (rawok) if (rawok)
to_arg->flags |= TRAVERSE_NO_DECRYPT; to_arg->flags |= TRAVERSE_NO_DECRYPT;
if (zfs_send_corrupt_data)
to_arg->flags |= TRAVERSE_HARD;
to_arg->num_blocks_visited = &dssp->dss_blocks; to_arg->num_blocks_visited = &dssp->dss_blocks;
(void) thread_create(NULL, 0, send_traverse_thread, to_arg, 0, (void) thread_create(NULL, 0, send_traverse_thread, to_arg, 0,
curproc, TS_RUN, minclsyspri); curproc, TS_RUN, minclsyspri);