Comment # 11 on bug 1205649 from Thomas Leroy

(In reply to Wenruo Qu from comment #10)
> It is possible.
> 
> Since you can already mount the fs RO, you can go "btrfs subvolume list
> <mnt>" to make sure which directory is subvolume 1628.
> 
> Another thing is, if you're using SUSE based distro, you may want to mount
> with "-o rescue=all,ro,subvolid=5" to mount the real top level subvolume.
> Or some subvolumes/snapshots may be hidden.
> 
> This can make a huge difference between the current /home is in-accessible
> from some snapshots of /home are completely fine.

"-o rescue=all,ro,subvolid=5" worked like a charm, I have all my home back.
Thanks A LOT Qu! (Btw, this worked on Ubuntu 22). Subvolume 1628 was actually a
snapshot.

I think I will reinstall the OS on the disk, and not trying to repair it.

If you want to investigate the BUG_ON, I am happy to help, otherwise we can
close this bug since this is good for me :)