On 2019/11/5 上午9:03, Tomasz Chmielewski wrote: > On 2019-11-05 09:52, Qu Wenruo wrote: > >>> Now let's try to unmount and see what "btrfs rescue fix-device-size" >>> shows again - I'd expect "No device size related problem found", >>> correct? >>> >>> >>> # umount /home >>> >>> # btrfs rescue fix-device-size /dev/sda4 >>> parent transid verify failed on 265344253952 wanted 42646 found 46119 >>> parent transid verify failed on 265344253952 wanted 42646 found 46119 >>> parent transid verify failed on 265344253952 wanted 42646 found 46119 >> >> This is not correct. What happened during your /home mount and unmount? >> >> The fs looks already screwed up. > > Nothing happened - it normally mounts/unmounts without errors. > > Also scrub works without issues (a few days ago): > > # btrfs scrub status /home > UUID: c94ea4a9-6d10-4e78-9b4a-ffe664386af2 > Scrub started: Sat Nov 2 01:14:17 2019 > Status: finished > Duration: 0:55:23 > Total to scrub: 1.17TiB > Rate: 368.41MiB/s > Error summary: no errors found > > > It also no longer shows "parent transid verify failed" after a few more > cycles like this: > > # umount /home > > # btrfs rescue fix-device-size /dev/sda4 > parent transid verify failed on 265344253952 wanted 42646 found 46119 > parent transid verify failed on 265344253952 wanted 42646 found 46119 > parent transid verify failed on 265344253952 wanted 42646 found 46119 > Ignoring transid failure > Fixed super total bytes, old size: 7901711842304 new size: 7901711835136 > Fixed unaligned/mismatched total_bytes for super block and device items When this transid mismatch happens, it's highly recommended to do a btrfs check on it. I won't be surprised by some error. > > # btrfs rescue fix-device-size /dev/sda4 > No device size related problem found > > # mount /home ; sync ; umount /home > > # btrfs rescue fix-device-size /dev/sda4 > parent transid verify failed on 265344253952 wanted 42646 found 46119 > parent transid verify failed on 265344253952 wanted 42646 found 46119 > parent transid verify failed on 265344253952 wanted 42646 found 46119 > Ignoring transid failure > Fixed super total bytes, old size: 7901711842304 new size: 7901711835136 > Fixed unaligned/mismatched total_bytes for super block and device items > > # mount /home ; sync ; umount /home > > # btrfs rescue fix-device-size /dev/sda4 > No device size related problem found > > # btrfs rescue fix-device-size /dev/sda4 > No device size related problem found > > # mount /home ; sync ; umount /home > > # btrfs rescue fix-device-size /dev/sda4 > No device size related problem found > > # btrfs rescue fix-device-size /dev/sdb4 > No device size related problem found > > # mount /home > > # date > /home/date.txt > > # umount /home > > # btrfs rescue fix-device-size /dev/sdb4 > No device size related problem found And that kernel warning still exists? Thanks, Qu > > > > Tomasz Chmielewski > https://lxadm.com
Attachment:
signature.asc
Description: OpenPGP digital signature
