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23227313a2
If a corruption happens to be on a root block of an objset, zdb -c will not correctly report the error, and it will not traverse the datasets that come after. This is because traverse_visitbp, which does the callback and reset error for TRAVERSE_HARD, is skipped when traversing zil is failed in traverse_impl. Here's example of what 'zdb -eLcc' command looks like on a pool with damaged objset root: == before patch: Traversing all blocks to verify checksums ... Error counts: errno count block traversal size 379392 != alloc 33987072 (unreachable 33607680) bp count: 172 ganged count: 0 bp logical: 1678336 avg: 9757 bp physical: 130560 avg: 759 compression: 12.85 bp allocated: 379392 avg: 2205 compression: 4.42 bp deduped: 0 ref>1: 0 deduplication: 1.00 SPA allocated: 33987072 used: 0.80% additional, non-pointer bps of type 0: 71 Dittoed blocks on same vdev: 101 == after patch: Traversing all blocks to verify checksums ... zdb_blkptr_cb: Got error 52 reading <54, 0, -1, 0> -- skipping Error counts: errno count 52 1 block traversal size 33963520 != alloc 33987072 (unreachable 23552) bp count: 447 ganged count: 0 bp logical: 36093440 avg: 80745 bp physical: 33699840 avg: 75391 compression: 1.07 bp allocated: 33963520 avg: 75981 compression: 1.06 bp deduped: 0 ref>1: 0 deduplication: 1.00 SPA allocated: 33987072 used: 0.80% additional, non-pointer bps of type 0: 76 Dittoed blocks on same vdev: 115 == Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: loli10K <ezomori.nozomu@gmail.com> Signed-off-by: Chunwei Chen <david.chen@nutanix.com> Closes #7099 |
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