On Sat 2019-07-13 (01:17), Ulli Horlacher wrote: > I need to find (all) subvolume directories. > I know, btrfs subvolumes root directories have inode #256, but a > "find / -inum 256" is horrible slow!
At least, I want to exclude non-btrfs filesystems to speed up the find run, but find cannot detect snapshots (as part of btrfs): root@trulla:~# find /opt -inum 256 -printf "%p %F\n" /opt btrfs /opt/.snapshot/2019-07-10_0000.daily unknown /opt/.snapshot/2019-07-11_0000.daily unknown /opt/.snapshot/2019-07-12_0000.daily unknown /opt/.snapshot/2019-07-13_0000.daily unknown /opt/.snapshot/2019-07-15_0000.daily unknown /opt/.snapshot/2019-07-15_1200.hourly unknown /opt/.snapshot/2019-07-15_1300.hourly unknown root@trulla:~# find /opt -inum 256 \( -fstype btrfs -o -fstype unknown \) -printf "%p %F\n" /opt btrfs root@trulla:~# root@trulla:~# btrfs subvolume list -o /opt ID 14930 gen 2276304 top level 259 path @/opt/.snapshot/2019-07-10_0000.daily ID 14957 gen 2277856 top level 259 path @/opt/.snapshot/2019-07-11_0000.daily ID 14981 gen 2279354 top level 259 path @/opt/.snapshot/2019-07-12_0000.daily ID 15005 gen 2280891 top level 259 path @/opt/.snapshot/2019-07-13_0000.daily ID 15052 gen 2283953 top level 259 path @/opt/.snapshot/2019-07-15_0000.daily ID 15064 gen 2284721 top level 259 path @/opt/.snapshot/2019-07-15_1200.hourly ID 15065 gen 2284788 top level 259 path @/opt/.snapshot/2019-07-15_1300.hourly root@trulla:~# stat -f -c %T /opt/.snapshot/2019-07-10_0000.daily btrfs -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum TIK Universitaet Stuttgart E-Mail: horlac...@tik.uni-stuttgart.de Allmandring 30a Tel: ++49-711-68565868 70569 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/ REF:<20190712231705.ga16...@tik.uni-stuttgart.de>
