On 2014-12-01 08:38, MegaBrutal wrote: > 2014-12-01 14:12 GMT+01:00 Austin S Hemmelgarn : >> >> We might want to consider adding an option to btrfs subvol del to ask for >> confirmation (or make it do so by default and add an option to disable >> asking for confirmation). >> > > I've also noticed, a subvolume can just be deleted with an "rm -r", > just like an ordinary directory. I'd consider to only allow subvolume > deletions with exact "btrfs subvolume delete" commands, and they > should be protected against an ordinary "rm". There also could be a > tunable FS feature to allow or disable ordinary subvolume deletions, > which could be set or unset by btrfstune. I think a subvolume really > deserves to be treated specially over an ordinary directory. I don't know what distro/kernel version you might be using, but every version of btrfs I have used required the use of 'btrfs subvol del' to actually delete a subvolume, even an empty one. It would not surprise me though if RHEL or SuSE had patched the kernel to allow using rm on a subvolume.