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From:   Josef Bacik <josef@toxicpanda.com>
Date:   Fri, 29 Apr 2022 23:13:08 -0400
Message-ID: <CAEzrpqdiYrbG4FDyoR1=HFZ-d12kD6mF-szxE-e+M-9ahKWd8A@mail.gmail.com>
Subject: Re: Rebuilding 24TB Raid5 array (was btrfs corruption: parent transid
 verify failed + open_ctree failed)
To:     Marc MERLIN <marc@merlins.org>
Cc:     linux-btrfs <linux-btrfs@vger.kernel.org>
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On Fri, Apr 29, 2022 at 10:24 PM Marc MERLIN <marc@merlins.org> wrote:
>
> On Fri, Apr 29, 2022 at 03:40:53PM -0400, Josef Bacik wrote:
> >
> > I'm afraid it'll be longer/less safe for me to work out the kinks than
> > to continue manually removing stuff.  If you have to do it say 10 more
> > times let me know and I can try and rig up something that can dump
> > root ids that you can just feed into btrfs-corrupt-block to clear
> > everything out at once.  Thanks,
>
> Took a while:
> ./btrfs-corrupt-block -d "76300,108,0" -r 163302 /dev/mapper/dshelf1
> ./btrfs-corrupt-block -d "76300,108,0" -r 163303 /dev/mapper/dshelf1
> ./btrfs-corrupt-block -d "76300,108,0" -r 163316 /dev/mapper/dshelf1
> ./btrfs-corrupt-block -d "76300,108,0" -r 163920 /dev/mapper/dshelf1
> ./btrfs-corrupt-block -d "76300,108,0" -r 164624 /dev/mapper/dshelf1
> ./btrfs-corrupt-block -d "76300,108,0" -r 165098 /dev/mapper/dshelf1
> ./btrfs-corrupt-block -d "76300,108,0" -r 165198 /dev/mapper/dshelf1
> ./btrfs-corrupt-block -d "76300,108,0" -r 165298 /dev/mapper/dshelf1
> ./btrfs-corrupt-block -d "76300,108,0" -r 16384 /dev/mapper/dshelf1
>
>
>
> Now I'm stuck here:
>

Hooray we're at the data reloc root.  It should have been cleared tho,
so I've fixed it up to see if it's doing the right thing, it should
clear it this time, if it doesn't let me know.  Thanks,

Josef