Background:
Typically when I’m trying something new on Linux, I search for an online guide that doesn’t assume I’m already an expert and looks like it should be easy enough for a pleb like myself to follow. Whatever it is I’m trying to do, it usually takes me multiple tries to get it right. Sometimes, when I’m venturing into new territory, I’ll derp around in a VM so I can take snapshots and then revert to the last good snapshot when something inevitably goes wrong. This approach works well for me most of the time.
But every now and then, I don’t want to use a VM, I want to use a spare laptop that I have lying around, “bare metal” if you will. It just feels more… authentic? My hesitation w/ practicing on spare laptops is that when I mess it up, the only way I know how to start over with a clean slate is to reinstall the OS and try again. This approach is not ideal b/c I mess up a lot - this is a fact of my life - and reinstalling the OS after every mistake takes a lot of time, to the point that I just stop persuing whatever project I was working on.
Question:
Is this a good use case for btrfs? How easy is it for a pleb like myself to take snapshots and then roll back to the previous state after jacking up a config file in /home or /etc or something?
Yes. Snapshot…make your changes… Try the system…and if it is messed use the old snapshot.
If you try tumbleweed the snapshots are also integrated to the grub menu so you can boot to any snapshot, and if you like the one you booted to you issue sudo snapper rollback and that makes your current snapshot the default.
It also has auto snapshots anytime you use the GUI yast tools, or other CLI tools like zypper, so you don’t have to manually created snapshots. Also has cleanup schedule to remove old snaphots either by date or number of snapshots