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14.04.2016 18:44, Moby пишет:
openSUSE Tumbleweed (20160411) (x86_64) system with / as btrfs. System was pretty much out of the box, with snapper taking snapshots etc with each zypper up etc.
Due to certain problems with some updates, I did a snapper rollback to a certain snapshot number. I realized after I did that that now I cannot delete one snapshot. This is the one that got set as the default subvolume when I did the snapper rollback. How do I put the system "back" to the way it was, where I had the ability to delete all snapshots.
You did not. Installation sets root to the first snapshot. It is probably always number 1, but I would be interested too in knowing how we can find out what root was before. This snapshot cannot be deleted just like your current root. On my TW this snapshot has description "first root filesystem". So setting root back makes no sense if the only reason is to be able to delete all snapshots.
I am assuming this means I have to change the subvolume back to whatever it is on default systems (I do not have another system to see what this should be), but I have no idea how to set about doing that; especially since this involves /.
Boot from rescue media, mount root partition and do btrfs subvolume set-default N /path/where/you/mounted/it where N is subvolume ID from btrfs subvolume list /path/where/you/mounted/it But as I said, this is completely pointless.
Any help will be much appreciated.
--Moby
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