Hello,
I have done a scrub on my Btrfs Raid 10 and have 2 uncorrectable errors.
In fact I cannot access 2 directories, even as root, permission is
denied and all directory attributes in ls -la are ????.
Before I have run this filesystem as Raid 1 with 3 disks without any
problems for more than a year. Scrubbed regularily. A month ago I added
a fouth HDD and balanced to Raid10. I am not sure if I did a scub
afterwards, but I usualy do. Now it found that errors. Smart status of
HDDs is healthy. The 2 directories were read-only for some years and not
even read in the last month.
What can I do now? Should I do a btrfs rescue? Which device, it is a
raid 10? Probably my files are OK, only the directories I cannot access.
How to recover the files?
Thanks in advance!
Steffen
Here is my data:
Linux bigbox 4.13.0-17-generic #20-Ubuntu SMP Mon Nov 6 10:04:08 UTC
2017 x86_64 x86_64 x86_64 GNU/Linux
btrfs-progs v4.12
Label: 'Videos' uuid: 4fafd0d4-7dd9-4dcc-9a33-5f1ad9555358
Total devices 4 FS bytes used 1.44TiB
devid 3 size 1.82TiB used 785.56GiB path /dev/sdc2
devid 4 size 1.82TiB used 785.56GiB path /dev/sde2
devid 5 size 1.82TiB used 785.56GiB path /dev/sdd2
devid 6 size 1.36TiB used 785.56GiB path /dev/sdf1
Data, RAID10: total=1.51TiB, used=1.43TiB
System, RAID10: total=128.00MiB, used=192.00KiB
Metadata, RAID10: total=21.00GiB, used=17.76GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
% sudo btrfs scrub start -Bd /
scrub device /dev/sdc2 (id 3) canceled
scrub started at Sun Nov 19 08:43:21 2017 and was aborted after
01:58:27
total bytes scrubbed: 568.86GiB with 0 errors
scrub device /dev/sde2 (id 4) canceled
scrub started at Sun Nov 19 08:43:21 2017 and was aborted after
01:58:28
total bytes scrubbed: 702.88GiB with 1 errors
error details: verify=1
corrected errors: 0, uncorrectable errors: 1, unverified errors: 0
scrub device /dev/sdd2 (id 5) done
scrub started at Sun Nov 19 08:43:21 2017 and finished after 01:48:00
total bytes scrubbed: 737.74GiB with 1 errors
error details: verify=1
corrected errors: 0, uncorrectable errors: 1, unverified errors: 0
scrub device /dev/sdf1 (id 6) canceled
scrub started at Sun Nov 19 08:43:21 2017 and was aborted after
01:58:28
total bytes scrubbed: 506.02GiB with 0 errors
[ 4.985712] BTRFS: device label Videos devid 6 transid 772463 /dev/sdf1
[ 4.985882] BTRFS: device label Videos devid 4 transid 772463 /dev/sde2
[ 4.986541] BTRFS: device label Videos devid 5 transid 772463 /dev/sdd2
[ 4.986713] BTRFS: device label Videos devid 3 transid 772463 /dev/sdc2
[ 5.007986] BTRFS info (device sdc2): disk space caching is enabled
[ 5.007988] BTRFS info (device sdc2): has skinny extents
[ 5.149910] BTRFS info (device sdc2): bdev /dev/sdd2 errs: wr 0, rd
0, flush 0, corrupt 0, gen 3
[ 5.149916] BTRFS info (device sdc2): bdev /dev/sde2 errs: wr 0, rd
0, flush 0, corrupt 0, gen 3
[ 25.482987] BTRFS info (device sdc2): use lzo compression
[ 25.482990] BTRFS info (device sdc2): disk space caching is enabled
[57830.611730] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sdd2, sector 338986176: metadata leaf
(level 0) in tree 318
[57830.611732] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sdd2, sector 338986176: metadata leaf
(level 0) in tree 318
[57830.611734] BTRFS error (device sdc2): bdev /dev/sdd2 errs: wr 0, rd
0, flush 0, corrupt 0, gen 4
[57832.688689] BTRFS error (device sdc2): unable to fixup (regular)
error at logical 17478699876352 on dev /dev/sdd2
[57870.488081] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sde2, sector 348423360: metadata leaf
(level 0) in tree 318
[57870.488083] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sde2, sector 348423360: metadata leaf
(level 0) in tree 318
[57870.488085] BTRFS error (device sdc2): bdev /dev/sde2 errs: wr 0, rd
0, flush 0, corrupt 0, gen 4
[57870.500114] BTRFS error (device sdc2): unable to fixup (regular)
error at logical 17478699876352 on dev /dev/sde2
[88979.005712] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sdd2, sector 338986176: metadata leaf
(level 0) in tree 318
[88979.005718] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sdd2, sector 338986176: metadata leaf
(level 0) in tree 318
[88979.005720] BTRFS error (device sdc2): bdev /dev/sdd2 errs: wr 0, rd
0, flush 0, corrupt 0, gen 5
[88979.036670] BTRFS error (device sdc2): unable to fixup (regular)
error at logical 17478699876352 on dev /dev/sdd2
[89026.609561] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sde2, sector 348423360: metadata leaf
(level 0) in tree 318
[89026.609563] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sde2, sector 348423360: metadata leaf
(level 0) in tree 318
[89026.609566] BTRFS error (device sdc2): bdev /dev/sde2 errs: wr 0, rd
0, flush 0, corrupt 0, gen 5
[89026.617423] BTRFS error (device sdc2): unable to fixup (regular)
error at logical 17478699876352 on dev /dev/sde2
[97765.699866] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sdd2, sector 338986176: metadata leaf
(level 0) in tree 318
[97765.699869] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sdd2, sector 338986176: metadata leaf
(level 0) in tree 318
[97765.699871] BTRFS error (device sdc2): bdev /dev/sdd2 errs: wr 0, rd
0, flush 0, corrupt 0, gen 6
[97765.735887] BTRFS error (device sdc2): unable to fixup (regular)
error at logical 17478699876352 on dev /dev/sdd2
[97789.909036] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sde2, sector 348423360: metadata leaf
(level 0) in tree 318
[97789.909039] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sde2, sector 348423360: metadata leaf
(level 0) in tree 318
[97789.909041] BTRFS error (device sdc2): bdev /dev/sde2 errs: wr 0, rd
0, flush 0, corrupt 0, gen 6
[97789.918254] BTRFS error (device sdc2): unable to fixup (regular)
error at logical 17478699876352 on dev /dev/sde2
[104087.660640] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sdd2, sector 338986176: metadata leaf
(level 0) in tree 318
[104087.660643] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sdd2, sector 338986176: metadata leaf
(level 0) in tree 318
[104087.660645] BTRFS error (device sdc2): bdev /dev/sdd2 errs: wr 0, rd
0, flush 0, corrupt 0, gen 7
[104087.696248] BTRFS error (device sdc2): unable to fixup (regular)
error at logical 17478699876352 on dev /dev/sdd2
[104126.980483] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sde2, sector 348423360: metadata leaf
(level 0) in tree 318
[104126.980486] BTRFS warning (device sdc2): checksum/header error at
logical 17478699876352 on dev /dev/sde2, sector 348423360: metadata leaf
(level 0) in tree 318
[104126.980488] BTRFS error (device sdc2): bdev /dev/sde2 errs: wr 0, rd
0, flush 0, corrupt 0, gen 7
[104126.995705] BTRFS error (device sdc2): unable to fixup (regular)
error at logical 17478699876352 on dev /dev/sde2
steffen@bigbox ~ % sudo btrfs device stats /
[/dev/sdc2].write_io_errs 0
[/dev/sdc2].read_io_errs 0
[/dev/sdc2].flush_io_errs 0
[/dev/sdc2].corruption_errs 0
[/dev/sdc2].generation_errs 0
[/dev/sde2].write_io_errs 0
[/dev/sde2].read_io_errs 0
[/dev/sde2].flush_io_errs 0
[/dev/sde2].corruption_errs 0
[/dev/sde2].generation_errs 7
[/dev/sdd2].write_io_errs 0
[/dev/sdd2].read_io_errs 0
[/dev/sdd2].flush_io_errs 0
[/dev/sdd2].corruption_errs 0
[/dev/sdd2].generation_errs 7
[/dev/sdf1].write_io_errs 0
[/dev/sdf1].read_io_errs 0
[/dev/sdf1].flush_io_errs 0
[/dev/sdf1].corruption_errs 0
[/dev/sdf1].generation_errs 0
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