On Thu 2019-07-18 (14:00), Axel Burri 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! > > https://github.com/digint/btrbk/commit/e12d980502 > > - get mounted filesystems from /proc/self/mountinfo > - fetch subvolumes using "btrfs subvolume list" (fast, needs root) > - filter and print subvolumes below mount point
Meanwhile I have come to the same solution :-) Only I use /proc/mounts instead of /proc/self/mountinfo framstag@fex:/tmp: btrfs_list ACCESS-MODE SUBVOLUME rw /local/home/framstag/blubb ro /local/home/framstag/blubb/.snapshot/2017-09-15_1811.test ro /local/home/framstag/blubb/.snapshot/2017-11-30_1007.test ro /local/home/framstag/blubb/.snapshot/2017-12-02_1026.test ro /local/home/framstag/blubb/.snapshot/2019-07-18_0139.test rw /local/tmp/test My first (wrong) approach was to use btrfs subvolume list TOPLEVEL_SUBVOLUME_MOUNTPOINT only, but not all btrfs mountpoints. > Note that this approach needs root, as "btrfs subvolume list" requires > "cap_sys_admin" and "cap_dac_read_search". My btrfs_list uses sudo and lists only subvolumes belonging to the user. > # cd /tmp > # wget https://raw.githubusercontent.com/digint/btrbk/action-ls/btrbk > # chmod +x /tmp/btrbk > > > List subvolumes below /home: > > # ./btrbk ls /home root@fex:~# /tmp/btrbk ls /local/ ERROR: Configuration file not found: /etc/btrbk.conf, /etc/btrbk/btrbk.conf ERROR: Failed to parse configuration file root@fex:~# touch /etc/btrbk.conf root@fex:~# /tmp/btrbk ls /local/ /local /local/home /local/home/.snapshot/2019-07-14_0000.weekly /local/home/.snapshot/2019-07-18_0000.daily /local/home/.snapshot/2019-07-19_0000.daily /local/home/.snapshot/2019-07-20_0000.daily /local/home/.snapshot/2019-07-20_0900.hourly /local/home/.snapshot/2019-07-20_1000.hourly /local/home/.snapshot/2019-07-20_1100.hourly /local/home/framstag/blubb /local/home/framstag/blubb/.snapshot/2017-09-15_1811.test /local/home/framstag/blubb/.snapshot/2017-11-30_1007.test /local/home/framstag/blubb/.snapshot/2017-12-02_1026.test /local/home/framstag/blubb/.snapshot/2019-07-18_0139.test /local/home/smc/test /local/spool/fex /local/tmp/test -- 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:<04d6d375-ee33-8d77-d139-a81302efd...@tty0.ch>
