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Date:   Thu, 2 Jun 2022 12:51:34 -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, Jun 02, 2022 at 03:35:46PM -0400, Josef Bacik wrote:
> On Thu, Jun 2, 2022 at 3:08 PM Marc MERLIN <marc@merlins.org> wrote:
> >
> > On Thu, Jun 02, 2022 at 02:43:03PM -0400, Josef Bacik wrote:
> > > Now we run
> > >
> > > btrfs rescue tree-recover <device>
> >
> > It got pretty far, and then
> > Invalid mapping for 364837339136-364837355520, got 11106814787584-11107888529408
> > Couldn't map the block 364837339136
> > Couldn't map the block 364837339136
> > deleting slot 0 in block 11160501878784
> > Invalid mapping for 364837306368-364837322752, got 11106814787584-11107888529408
> > Couldn't map the block 364837306368
> > Couldn't map the block 364837306368
> > deleting slot 0 in block 11160501878784
> > Invalid mapping for 364746457088-364746473472, got 11106814787584-11107888529408
> > Couldn't map the block 364746457088
> > Couldn't map the block 364746457088
> > deleting slot 0 in block 11160501878784
> 
> Was it printing a lot of these messages?  I was sort of hoping we

Yes

> found all the chunks so it didn't feel the need to delete a bunch of
> stuff.  Can you re-run
> 
> btrfs rescue recover-chunks <device>
> 
> and make sure it doesn't find anything new?  Maybe there were some
> system chunks that it found that has the other chunks in it.  Thanks,

output is very long.  I was able to paste a good part in
https://justpaste.it/5cy5s

last lines:
trying bytenr 15645980491776 got 3 blocks 8 bad
Repairing root 163318 bad_blocks 8 update 1
Invalid mapping for 11822436614144-11822436630528, got 14271702368256-14272776110080
Couldn't map the block 11822436614144
Couldn't map the block 11822436614144
deleting slot 0 in block 15645980491776
Invalid mapping for 365011795968-365011812352, got 11106814787584-11107888529408
Couldn't map the block 365011795968
Couldn't map the block 365011795968
deleting slot 0 in block 15645980491776
Invalid mapping for 365043269632-365043286016, got 11106814787584-11107888529408
Couldn't map the block 365043269632
Couldn't map the block 365043269632
deleting slot 0 in block 15645980491776
Invalid mapping for 365031768064-365031784448, got 11106814787584-11107888529408
Couldn't map the block 365031768064
Couldn't map the block 365031768064
deleting slot 0 in block 15645980491776
Invalid mapping for 365028409344-365028425728, got 11106814787584-11107888529408
Couldn't map the block 365028409344
Couldn't map the block 365028409344
deleting slot 0 in block 15645980491776
Invalid mapping for 365033668608-365033684992, got 11106814787584-11107888529408
Couldn't map the block 365033668608
Couldn't map the block 365033668608
deleting slot 0 in block 15645980491776
deleting slot 0 in block 15645980491776
deleting slot 0 in block 15645980491776
bad tree block 15645980491776, invalid nr_items: 0
kernel-shared/disk-io.c:553: write_tree_block: BUG_ON `1` triggered, value 1
./btrfs(+0x25ae7)[0x558782bb4ae7]
./btrfs(write_tree_block+0xb8)[0x558782bb6ec9]
./btrfs(+0x8aa38)[0x558782c19a38]
./btrfs(+0x8adcb)[0x558782c19dcb]
./btrfs(btrfs_recover_trees+0x628)[0x558782c1aa3b]
./btrfs(+0x83f1f)[0x558782c12f1f]
./btrfs(handle_command_group+0x49)[0x558782ba717b]
./btrfs(main+0x94)[0x558782ba7275]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xcd)[0x7f06496ad7fd]
./btrfs(_start+0x2a)[0x558782ba6e1a]
Aborted

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