This is a conceptual btrfs question :-) I have this btrfs filesystem: root@xerus:~# mount | grep /test /dev/sdd4 on /test type btrfs (rw,relatime,space_cache,user_subvol_rm_allowed,subvolid=5,subvol=/) with some snapshots: root@xerus:~# btrfs subvolume list /test ID 736 gen 9722 top level 5 path .snapshot/2018-12-02_1215.test ID 737 gen 9722 top level 5 path .snapshot/2018-12-02_1216.test ID 738 gen 9722 top level 5 path .snapshot/2018-12-02_1217.test I now want to do a rollback to .snapshot/2018-12-02_1217.test I can do it with: mount -t btrfs -o subvol=.snapshot/2018-12-02_1217.test /dev/sdd4 /test But (how) can I delete the original root subvol to free disk space? -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum TIK Universitaet Stuttgart E-Mail: horlacher@xxxxxxxxxxxxxxxxxxxx Allmandring 30a Tel: ++49-711-68565868 70569 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/ REF:<20190705103823.GA13281@xxxxxxxxxxxxxxxxxxxx>
