On 2020-12-21 11:11 a.m., Claudius Ellsel wrote: > Unfortunately I am already at a somewhat production stage where I don't want to lose any data. >
You should first and foremost make sure you have backups of everything. > > The problem might be that I currently don't have any subvolumes set up at > all. Am I still be able to create snapshots in this stage or do I have to > create a subvolume first from which snapshots can be created afterwards? > You have 1 subvolume, which is the root of your filesystem. You can make snapshots of it.. (and each snapshot will be a new subvolume) To make your life easier, as you start experimenting, I suggest making a new Read/Write subvolume to put your snapshots into btrfs subvolume create .my_snapshots btrfs subvolume snapshot -r /mnt_point /mnt_point/.my_snapshots/snapshot1 (Note: You will not be able to move or rename the snapshot1 folder, but you *will* be able to move or rename the entire .my_snapshots subvolume > Also I learned about snapper from SUSE which sounds nice, but I don't want to > break things while trying to use it. > Snapper is an amazing tool... You should familiarize yourself and be comfortable with the btrfs subvolume command first, (things will make more sense if you know whats going on...), but Snapper makes it a.. snap to automate the snapshots *and* the clean-up.
