Re: BTRFS-errors on a 20TB filesystem

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Sorry for the delay :-/

On 7/7/20 1:58 AM, Qu Wenruo wrote:
Although still needs some extra dmesg context for the following bytenr:
- 2627928588288
   I see no obvious problem around slot 10

$ dmesg | grep 2627928588288
[ 595.081488] BTRFS critical (device sdc1): corrupt leaf: root=5 block=2627928588288 slot=10 ino=11274213 file_offset=454656, extent end overflow, have file offset 454656 extent num bytes 18446744073709457408 [ 595.081589] BTRFS error (device sdc1): block=2627928588288 read time tree block corruption detected

This is repeated several times later on. The only thing preceeding this is:

[  243.295071] BTRFS info (device sdc1): disk space caching is enabled
[  243.295075] BTRFS info (device sdc1): has skinny extents

- 3154217795584

[ 602.597770] BTRFS critical (device sdc1): corrupt leaf: root=5 block=3154217795584 slot=102 ino=12990328 file_offset=184320, extent end overflow, have file offset 184320 extent num bytes 18446744073709395968 [ 602.597869] BTRFS error (device sdc1): block=3154217795584 read time tree block corruption detected

- 3154257952768
   Mentioned slot doesn't exist at all, not sure what happened there

[ 603.161394] BTRFS critical (device sdc1): corrupt leaf: root=5 block=3154257952768 slot=59 ino=13467676 file_offset=262144, extent end overflow, have file offset 262144 extent num bytes 18446744073709527040 [ 603.168062] BTRFS error (device sdc1): block=3154257952768 read time tree block corruption detected

- 3154259034112
   The offending slot seems fine

[ 603.316595] BTRFS critical (device sdc1): corrupt leaf: root=5 block=3154259034112 slot=27 ino=14013491 file_offset=102400, extent end overflow, have file offset 102400 extent num bytes 18446744073709514752 [ 603.323174] BTRFS error (device sdc1): block=3154259034112 read time tree block corruption detected

- 3154291228672
   I guess the problem is hash mismatch, but can't confirm.

[ 602.779540] BTRFS critical (device sdc1): corrupt leaf: root=5 block=3154291228672 slot=9 ino=13286681 file_offset=204800, extent end overflow, have file offset 204800 extent num bytes 18446744073709481984 [ 602.786103] BTRFS error (device sdc1): block=3154291228672 read time tree block corruption detected

Does this help any?

Poltsi



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