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Date:   Thu, 28 Apr 2022 17:56:24 -0700
From:   Marc MERLIN <marc@merlins.org>
To:     Josef Bacik <josef@toxicpanda.com>
Cc:     linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: Rebuilding 24TB Raid5 array (was btrfs corruption: parent
 transid verify failed + open_ctree failed)
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On Thu, Apr 28, 2022 at 07:24:22PM -0400, Josef Bacik wrote:
> > inserting block group 15835070464000
> > inserting block group 15836144205824
> > inserting block group 15837217947648
> > inserting block group 15838291689472
> > inserting block group 15839365431296
> > inserting block group 15840439173120
> > inserting block group 15842586656768
> > processed 1556480 of 0 possible bytes
> > processed 49152 of 0 possible bytesadding a bytenr that overlaps our
> > thing, dumping paths for [4088, 108, 0]
> 
> Oh huh, we must not have a free space object for this, in that case lets do
> 
> ./btrfs-corrupt-block -d "4088,108,0" -r 2 /dev/whatever
> 
> and then do the init.  Thanks,

gargamel:/var/local/src/btrfs-progs-josefbacik# ./btrfs-corrupt-block -d "4088,108,0" -r 2 /dev/mapper/dshelf1
FS_INFO IS 0x558c0e536600
JOSEF: root 9
Couldn't find the last root for 8
FS_INFO AFTER IS 0x558c0e536600
Error searching to node -2

not good news I assume?

Marc
-- 
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Home page: http://marc.merlins.org/