Re: Simple quota unsafe? RIP: 0010:__btrfs_free_extent.isra.0+0xc41/0x1020 [btrfs] / do_free_extent_accounting:2999: errno=-2 No such entry

[Marc MERLIN <marc_btrfs@merlins.org>]

On Wed, Apr 15, 2026 at 10:05:10AM -0700, Boris Burkov wrote:
> 1258303029248 is the logical address we were freeing so its backrefs in
> the extent tree will be interesting. As will whatever subvol tree it is
> in, as will the qgroup tree entry for that subvolid. If you can share a
> full dump then I can find all that myself.
 
Note that I fixed the laptop, thankfully didn't have to rebuild this
filesystem.  

Sorry, not very good with the debug tools. Was that the right command?
merlin:/mnt/btrfs_pool3# btrfs inspect-internal dump-tree -t 1258303029248 /dev/mapper/pool3
btrfs-progs v6.14
total bytes 4074040004608
bytes used 2415294197760
uuid 49741c78-3949-4d7d-b77a-160ce071dee0
merlin:/mnt/btrfs_pool3#


> ditto for the logical address that broke on the rpi, but if that is a
> gigantic fs, maybe doing the dump will be pretty unwieldy..

That's the bigger one indeed, still waiting read only until I'm told I
can wipe it, or should wait for debug data request. It's been too long
already and I had spare drives, so I started a full restore on a new
set of drives and will swap them in for the current one I can't mount
read/write but can keep it around for debugging / potential future 
check --repair patch

Thanks,
Marc
-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
 
Home page: http://marc.merlins.org/                       | PGP 7F55D5F27AAF9D08