Ubuntu by default creates the subvol of the root (@) and of the home user (@home), I with the timeshift tool create snapshots only on the root (@), so when I restore a snapshot a few months ago, I have all the snap packages (I have many) to update and those I installed, obviously they are no longer present.
The solution would be to create a subvol to exclude snap packets from snapshots, as does openSUSE for other folders: https://en.opensuse.org/SDB:BTRFS
What subvol do I have to create to exclude snap packages? /var?
It would be nice that these subvols were created with the Ubuntu installer, but that’s off the subject here.
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