Package: mlocate Version: 0.26-1 Severity: normal
Dear maintainer, mlocate records files in my /, but not in my /home. I'm using 2 btrfs subvolumes, one for / and one for /home. Such subvolumes (which reside on the same physical partition from a /dev/* point of view) are presented to the system similar to bind mounts: # egrep sdb3 /proc/self/mountinfo 20 1 0:16 /@jessie / rw,relatime - btrfs /dev/sdb3 rw,space_cache 26 20 0:16 /@home /home rw,relatime - btrfs /dev/sdb3 rw,space_cache Running updatedb with --debug-pruning shows that it apparently prunes /home because it thinks it's a bind mount path: # updatedb --debug-pruning ... Rebuilding bind_mount_paths: `/sys' (15 on 20) is `/' of `sysfs' (0:14), type `sysfs' `/proc' (16 on 20) is `/' of `proc' (0:3), type `proc' `/dev' (17 on 20) is `/' of `udev' (0:5), type `devtmpfs' `/dev/pts' (18 on 17) is `/' of `devpts' (0:11), type `devpts' `/run' (19 on 20) is `/' of `tmpfs' (0:15), type `tmpfs' `/' (20 on 1) is `/@jessie' of `/dev/sdb3' (0:16), type `btrfs' `/run/lock' (21 on 19) is `/' of `tmpfs' (0:19), type `tmpfs' `/sys/fs/pstore' (22 on 15) is `/' of `pstore' (0:20), type `pstore' `/run/shm' (23 on 19) is `/' of `tmpfs' (0:21), type `tmpfs' `/sys/fs/fuse/connections' (24 on 15) is `/' of `fusectl' (0:23), type `fusectl' `/boot/efi' (25 on 20) is `/' of `/dev/sda2' (8:2), type `vfat' `/home' (26 on 20) is `/@home' of `/dev/sdb3' (0:16), type `btrfs' `/proc/sys/fs/binfmt_misc' (27 on 16) is `/' of `binfmt_misc' (0:25), type `binfmt_misc' `/sys/fs/cgroup' (29 on 15) is `/' of `none' (0:26), type `tmpfs' `/sys/fs/cgroup/systemd' (30 on 29) is `/' of `systemd' (0:27), type `cgroup' Matching bind_mount_paths: => adding `/home' ...done Checking whether filesystem `/boot/efi' is excluded: ... Skipping `/home': bind mount ... Treating it as a bind mount path is not wrong per se, but it seems to subordinate it to my / (which it doesn't prune), which is wrong. My / and /home have no common mounted root subvol and so should both be scanned. Even if I mount my root subvolume on /mnt/tmp, it doesn't work correctly: # egrep sdb3 /proc/self/mountinfo 20 1 0:16 /@jessie / rw,relatime - btrfs /dev/sdb3 rw,space_cache 26 20 0:16 /@home /home rw,relatime - btrfs /dev/sdb3 rw,space_cache 31 20 0:16 / /mnt/tmp rw,relatime - btrfs /dev/sdb3 rw,space_cache # updatedb --debug-pruning ... Rebuilding bind_mount_paths: `/sys' (15 on 20) is `/' of `sysfs' (0:14), type `sysfs' `/proc' (16 on 20) is `/' of `proc' (0:3), type `proc' `/dev' (17 on 20) is `/' of `udev' (0:5), type `devtmpfs' `/dev/pts' (18 on 17) is `/' of `devpts' (0:11), type `devpts' `/run' (19 on 20) is `/' of `tmpfs' (0:15), type `tmpfs' `/' (20 on 1) is `/@jessie' of `/dev/sdb3' (0:16), type `btrfs' `/run/lock' (21 on 19) is `/' of `tmpfs' (0:19), type `tmpfs' `/sys/fs/pstore' (22 on 15) is `/' of `pstore' (0:20), type `pstore' `/run/shm' (23 on 19) is `/' of `tmpfs' (0:21), type `tmpfs' `/sys/fs/fuse/connections' (24 on 15) is `/' of `fusectl' (0:23), type `fusectl' `/boot/efi' (25 on 20) is `/' of `/dev/sda2' (8:2), type `vfat' `/home' (26 on 20) is `/@home' of `/dev/sdb3' (0:16), type `btrfs' `/proc/sys/fs/binfmt_misc' (27 on 16) is `/' of `binfmt_misc' (0:25), type `binfmt_misc' `/sys/fs/cgroup' (29 on 15) is `/' of `none' (0:26), type `tmpfs' `/sys/fs/cgroup/systemd' (30 on 29) is `/' of `systemd' (0:27), type `cgroup' `/mnt/tmp' (31 on 20) is `/' of `/dev/sdb3' (0:16), type `btrfs' Matching bind_mount_paths: => adding `/home' => adding `/mnt/tmp' ...done Checking whether filesystem `/boot/efi' is excluded: ... Skipping `/home': bind mount Skipping `/media': in prunepaths Skipping `/mnt/tmp': bind mount ... It scans /, but skips /home and /mnt/tmp. I expect it to scan /mnt/tmp (which is subvol /) and skip / and /home (which are subvols /@jessie and /@home, respectively) instead. The workaround for now is to disable pruning bind mounts. Regards Niels Boehm -- System Information: Debian Release: jessie/sid APT prefers testing-proposed-updates APT policy: (930, 'testing-proposed-updates'), (930, 'stable-updates'), (930, 'testing'), (930, 'stable'), (830, 'proposed-updates'), (830, 'stable'), (90, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.13-1-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages mlocate depends on: ii adduser 3.113+nmu3 ii libc6 2.18-5 mlocate recommends no packages. mlocate suggests no packages. -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
