Basically in my test environment (localhost) I used to run LXD snap edge, because stable or canonical didn’t worked for me, and my pool was no mounted. (btrfs in LUKS with only entry in crypttab, but none in fstab). Anyway I think snap updated and all containers became with only one
/bin/bash process. But instead of switching to stable, I done a stupid thing and removed snap with
snap remove lxd and installed local lxd in the package. But at that moment LXD was already migrated, and basically after I removed packages and install lxd from snap back, i have totally wiped database.
Basically right now I seek a way to restore, or connect old btrfs pool (and import container entries back to the lxd) that I mounted to
/mnt/lxd. manually (and added to fstab) which contains
containers custom images snapshots directories with all containers intact.
Basically yes, I actually had idea that removing snap will no preserve data, but typed it automatically, after long work day.