On Fri 2017-09-15 (23:44), Ulli Horlacher wrote: > On Fri 2017-09-15 (22:07), Peter Grandi wrote: > > > > [ ... ] mounted with option user_subvol_rm_allowed [ ... ] > > > root can delete this snapshot, but not the user. Why? [ ... ] > > > > Ordinary permissions still apply both to 'create' and 'delete': > > My user tux is the owner of the snapshot directory, because he has created it! I can delete normal subvolumes but not the readonly snapshots: tux@xerus:/test/tux/zz/.snapshot: btrfs subvolume create test Create subvolume './test' tux@xerus:/test/tux/zz/.snapshot: ll drwxr-xr-x tux users - 2017-09-15 18:22:26 2017-09-15_1822.test drwxr-xr-x tux users - 2017-09-15 18:22:26 2017-09-15_1824.test drwxr-xr-x tux users - 2017-09-15 18:57:39 2017-09-15_1859.test drwxr-xr-x tux users - 2017-09-15 23:58:51 test tux@xerus:/test/tux/zz/.snapshot: btrfs subvolume delete test Delete subvolume (no-commit): '/test/tux/zz/.snapshot/test' tux@xerus:/test/tux/zz/.snapshot: btrfs subvolume delete 2017-09-15_1859.test Delete subvolume (no-commit): '/test/tux/zz/.snapshot/2017-09-15_1859.test' ERROR: cannot delete '/test/tux/zz/.snapshot/2017-09-15_1859.test': Read-only file system -- 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:<20170915214434.GG32347@xxxxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
