On Sun, Feb 14, 2021 at 5:11 PM Chris Murphy <li...@colorremedies.com> wrote: > > On Sun, Feb 14, 2021 at 1:29 PM Neal Gompa <ngomp...@gmail.com> wrote: > > > > Hey all, > > > > So one of my main computers recently had a disk controller failure > > that caused my machine to freeze. After rebooting, Btrfs refuses to > > mount. I tried to do a mount and the following errors show up in the > > journal: > > > > > Feb 14 15:20:49 localhost-live kernel: BTRFS info (device sda3): disk > > > space caching is enabled > > > Feb 14 15:20:49 localhost-live kernel: BTRFS info (device sda3): has > > > skinny extents > > > Feb 14 15:20:49 localhost-live kernel: BTRFS critical (device sda3): > > > corrupt leaf: root=401 block=796082176 slot=15 ino=203657, invalid inode > > > transid: has 888896 expect [0, 888895] > > > Feb 14 15:20:49 localhost-live kernel: BTRFS error (device sda3): > > > block=796082176 read time tree block corruption detected > > > Feb 14 15:20:49 localhost-live kernel: BTRFS critical (device sda3): > > > corrupt leaf: root=401 block=796082176 slot=15 ino=203657, invalid inode > > > transid: has 888896 expect [0, 888895] > > > Feb 14 15:20:49 localhost-live kernel: BTRFS error (device sda3): > > > block=796082176 read time tree block corruption detected > > > Feb 14 15:20:49 localhost-live kernel: BTRFS warning (device sda3): > > > couldn't read tree root > > > Feb 14 15:20:49 localhost-live kernel: BTRFS error (device sda3): > > > open_ctree failed > > > > I've tried to do -o recovery,ro mount and get the same issue. I can't > > seem to find any reasonably good information on how to do recovery in > > this scenario, even to just recover enough to copy data off. > > > > I'm on Fedora 33, the system was on Linux kernel version 5.9.16 and > > the Fedora 33 live ISO I'm using has Linux kernel version 5.10.14. I'm > > using btrfs-progs v5.10. > > Oh and also that block: > > btrfs insp dump-t -b 796082176 /dev/sda3 >
So, I've attached the output of the dump-s and dump-t commands. As for the other commands: # btrfs check --readonly /dev/sda3 > Opening filesystem to check... > parent transid verify failed on 796082176 wanted 888894 found 888896 > parent transid verify failed on 796082176 wanted 888894 found 888896 > parent transid verify failed on 796082176 wanted 888894 found 888896 > Ignoring transid failure > ERROR: could not setup extent tree > ERROR: cannot open file system # mount -o ro,rescue=all /dev/sda3 /mnt > mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sda3, missing > codepage or helper program, or other error. This is using the Fedora 34 KDE 20210214 live ISO snapshot, with kernel version 5.11.0-0.rc7.149.fc34.x86_64. -- 真実はいつも一つ！/ Always, there's only one truth!
dump-s
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dump-t-block
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