* findmnt on 3.14-rc3 – only shows /proc in tree mode
@ 2014-02-20 13:43 Mantas Mikulėnas
2014-02-20 16:24 ` Karel Zak
0 siblings, 1 reply; 2+ messages in thread
From: Mantas Mikulėnas @ 2014-02-20 13:43 UTC (permalink / raw)
To: util-linux
[-- Attachment #1: Type: text/plain, Size: 1064 bytes --]
Using util-linux 2.24.1 on Arch Linux, running `findmnt` only shows
mounts at or under "/proc", and ignores all other mount points
(including "/"). This only happens in "tree" mode – if I run `findmnt
--raw` it lists all mounts correctly.
This happens with custom-built 3.14-rc3 kernel, but works fine with
Arch's stock 3.13.x (the same Arch initramfs for both). Building
`findmnt` from util-linux.git did not change anything.
> $ findmnt
> TARGET SOURCE FSTYPE OPTIONS
> /proc proc proc rw,nosuid,nodev,noexec,relatime
> └─/proc/sys/fs/binfmt_misc systemd-1 autofs rw,relatime,fd=21,pgrp=1,timeout=300,minprot
> └─/proc/sys/fs/binfmt_misc binfmt_misc binfmt_mi rw,relatime
It seems there is a small difference in /proc/self/mountinfo with 3.14;
the entry for / looks like this:
> 19 0 8:3 / / rw,relatime - ext4 /dev/sda3 rw,data=ordered
...while in 3.13 it used to be:
> 19 1 8:3 / / rw,relatime - ext4 /dev/sda3 rw,data=ordered
--
Mantas Mikulėnas <grawity@gmail.com>
[-- Attachment #2: bad-mountinfo.txt --]
[-- Type: text/plain, Size: 2946 bytes --]
15 19 0:2 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
16 19 0:14 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sys rw
17 19 0:4 / /dev rw,nosuid,relatime - devtmpfs dev rw,size=1952448k,nr_inodes=488112,mode=755
18 19 0:15 / /run rw,nosuid,nodev,relatime - tmpfs run rw,mode=755
19 0 8:3 / / rw,relatime - ext4 /dev/sda3 rw,data=ordered
20 16 0:13 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime - securityfs securityfs rw
21 17 0:16 / /dev/shm rw,nosuid,nodev - tmpfs tmpfs rw
22 17 0:10 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000
23 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec - tmpfs tmpfs rw,mode=755
24 23 0:18 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd
25 16 0:19 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime - pstore pstore rw
26 16 0:20 / /sys/firmware/efi/efivars rw,nosuid,nodev,noexec,relatime - efivarfs efivarfs rw
27 23 0:21 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuset
28 23 0:22 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpu,cpuacct
29 23 0:23 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,memory
30 23 0:24 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,devices
31 23 0:25 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,freezer
32 23 0:26 / /sys/fs/cgroup/net_cls rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,net_cls
33 23 0:27 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,blkio
34 15 0:28 / /proc/sys/fs/binfmt_misc rw,relatime - autofs systemd-1 rw,fd=21,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
35 19 0:29 / /boot rw,relatime - autofs systemd-1 rw,fd=22,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
36 34 0:30 / /proc/sys/fs/binfmt_misc rw,relatime - binfmt_misc binfmt_misc rw
39 16 0:6 / /sys/kernel/debug rw,relatime - debugfs debugfs rw
37 17 0:31 / /dev/hugepages rw,relatime - hugetlbfs hugetlbfs rw
38 19 0:32 / /tmp rw - tmpfs tmpfs rw
40 17 0:12 / /dev/mqueue rw,relatime - mqueue mqueue rw
42 16 0:33 / /sys/kernel/config rw,relatime - configfs configfs rw
43 19 8:4 / /home rw,noatime - ext4 /dev/sda4 rw,data=ordered
44 35 8:2 / /boot rw,noatime - ext4 /dev/sda2 rw,data=ordered
45 44 8:1 / /boot/efi rw,noatime - vfat /dev/sda1 rw,fmask=0133,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
46 43 0:34 / /home/grawity/Private rw,nosuid,nodev,relatime - ecryptfs /home/grawity/.Private rw,ecryptfs_fnek_sig=24f417250d324a64,ecryptfs_sig=f615f6830f052a77,ecryptfs_cipher=aes,ecryptfs_key_bytes=16,ecryptfs_unlink_sigs
47 16 0:35 / /sys/fs/fuse/connections rw,relatime - fusectl fusectl rw
48 18 0:36 / /run/user/1000/gvfs rw,nosuid,nodev,relatime - fuse.gvfsd-fuse gvfsd-fuse rw,user_id=1000,group_id=1000
[-- Attachment #3: good-mountinfo.txt --]
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15 19 0:3 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
16 19 0:14 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sys rw
17 19 0:5 / /dev rw,nosuid,relatime - devtmpfs dev rw,size=1952328k,nr_inodes=488082,mode=755
18 19 0:15 / /run rw,nosuid,nodev,relatime - tmpfs run rw,mode=755
19 1 8:3 / / rw,relatime - ext4 /dev/sda3 rw,data=ordered
20 16 0:16 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime - securityfs securityfs rw
21 17 0:17 / /dev/shm rw,nosuid,nodev - tmpfs tmpfs rw
22 17 0:11 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000
23 16 0:18 / /sys/fs/cgroup rw,nosuid,nodev,noexec - tmpfs tmpfs rw,mode=755
24 23 0:19 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd
25 16 0:20 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime - pstore pstore rw
26 16 0:21 / /sys/firmware/efi/efivars rw,nosuid,nodev,noexec,relatime - efivarfs efivarfs rw
27 23 0:22 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuset
28 23 0:23 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuacct,cpu
29 23 0:24 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,memory
30 23 0:25 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,devices
31 23 0:26 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,freezer
32 23 0:27 / /sys/fs/cgroup/net_cls rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,net_cls
33 23 0:28 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,blkio
34 15 0:29 / /proc/sys/fs/binfmt_misc rw,relatime - autofs systemd-1 rw,fd=21,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
35 19 0:30 / /boot rw,relatime - autofs systemd-1 rw,fd=22,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
36 34 0:31 / /proc/sys/fs/binfmt_misc rw,relatime - binfmt_misc binfmt_misc rw
37 19 0:32 / /tmp rw - tmpfs tmpfs rw
38 17 0:13 / /dev/mqueue rw,relatime - mqueue mqueue rw
40 16 0:7 / /sys/kernel/debug rw,relatime - debugfs debugfs rw
39 17 0:33 / /dev/hugepages rw,relatime - hugetlbfs hugetlbfs rw
42 16 0:34 / /sys/kernel/config rw,relatime - configfs configfs rw
44 35 8:2 / /boot rw,noatime - ext4 /dev/sda2 rw,data=ordered
43 19 8:4 / /home rw,noatime - ext4 /dev/sda4 rw,data=ordered
45 44 8:1 / /boot/efi rw,noatime - vfat /dev/sda1 rw,fmask=0133,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
46 43 0:35 / /home/grawity/Private rw,nosuid,nodev,relatime - ecryptfs /home/grawity/.Private rw,ecryptfs_fnek_sig=24f417250d324a64,ecryptfs_sig=f615f6830f052a77,ecryptfs_cipher=aes,ecryptfs_key_bytes=16,ecryptfs_unlink_sigs
[-- Attachment #4: bad-findmnt-debug.txt --]
[-- Type: text/plain, Size: 4053 bytes --]
564509: libmount: INIT: library debug mask: 0xffff
564509: libmount: INIT: library version: 2.24.0
564509: libmount: INIT: feature: debug
564509: libmount: INIT: feature: assert
564509: libmount: TAB: [0x1786da0]: alloc
564509: libmount: TAB: [0x1786da0]: /proc/self/mountinfo: start parsing [entries=0, filter=not]
564509: libmount: TAB: trying to guess table type
564509: libmount: TAB: [0x1786da0]: add entry: proc /proc
564509: libmount: TAB: TID for /proc/self/mountinfo is 564509
564509: libmount: TAB: [0x1786da0]: add entry: sys /sys
564509: libmount: TAB: [0x1786da0]: add entry: dev /dev
564509: libmount: TAB: [0x1786da0]: add entry: run /run
564509: libmount: TAB: [0x1786da0]: add entry: /dev/sda3 /
564509: libmount: TAB: [0x1786da0]: add entry: securityfs /sys/kernel/security
564509: libmount: TAB: [0x1786da0]: add entry: tmpfs /dev/shm
564509: libmount: TAB: [0x1786da0]: add entry: devpts /dev/pts
564509: libmount: TAB: [0x1786da0]: add entry: tmpfs /sys/fs/cgroup
564509: libmount: TAB: [0x1786da0]: add entry: cgroup /sys/fs/cgroup/systemd
564509: libmount: TAB: [0x1786da0]: add entry: pstore /sys/fs/pstore
564509: libmount: TAB: [0x1786da0]: add entry: efivarfs /sys/firmware/efi/efivars
564509: libmount: TAB: [0x1786da0]: add entry: cgroup /sys/fs/cgroup/cpuset
564509: libmount: TAB: [0x1786da0]: add entry: cgroup /sys/fs/cgroup/cpu,cpuacct
564509: libmount: TAB: [0x1786da0]: add entry: cgroup /sys/fs/cgroup/memory
564509: libmount: TAB: [0x1786da0]: add entry: cgroup /sys/fs/cgroup/devices
564509: libmount: TAB: [0x1786da0]: add entry: cgroup /sys/fs/cgroup/freezer
564509: libmount: TAB: [0x1786da0]: add entry: cgroup /sys/fs/cgroup/net_cls
564509: libmount: TAB: [0x1786da0]: add entry: cgroup /sys/fs/cgroup/blkio
564509: libmount: TAB: [0x1786da0]: add entry: systemd-1 /proc/sys/fs/binfmt_misc
564509: libmount: TAB: [0x1786da0]: add entry: systemd-1 /boot
564509: libmount: TAB: [0x1786da0]: add entry: binfmt_misc /proc/sys/fs/binfmt_misc
564509: libmount: TAB: [0x1786da0]: add entry: debugfs /sys/kernel/debug
564509: libmount: TAB: [0x1786da0]: add entry: hugetlbfs /dev/hugepages
564509: libmount: TAB: [0x1786da0]: add entry: tmpfs /tmp
564509: libmount: TAB: [0x1786da0]: add entry: mqueue /dev/mqueue
564509: libmount: TAB: [0x1786da0]: add entry: configfs /sys/kernel/config
564509: libmount: TAB: [0x1786da0]: add entry: /dev/sda4 /home
564509: libmount: TAB: [0x1786da0]: add entry: /dev/sda2 /boot
564509: libmount: TAB: [0x1786da0]: add entry: /dev/sda1 /boot/efi
564509: libmount: TAB: [0x1786da0]: add entry: fusectl /sys/fs/fuse/connections
564509: libmount: TAB: [0x1786da0]: add entry: /home/grawity/.Private /home/grawity/Private
564509: libmount: TAB: [0x1786da0]: add entry: gvfsd-fuse /run/user/1000/gvfs
564509: libmount: TAB: [0x1786da0]: /proc/self/mountinfo: stop parsing (33 entries)
564509: libmount: CACHE: [0x178e210]: alloc
564509: libmount: TAB: [0x1786da0]: lookup root fs
564509: libmount: TAB: [0x1786da0]: lookup next child of '/proc'
564509: libmount: TAB: [0x1786da0]: lookup next child of '/proc/sys/fs/binfmt_misc'
564509: libmount: TAB: [0x1786da0]: lookup next child of '/proc/sys/fs/binfmt_misc'
564509: libmount: TAB: [0x1786da0]: lookup next child of '/proc/sys/fs/binfmt_misc'
564509: libmount: TAB: [0x1786da0]: lookup next child of '/proc'
564509: libmount: TAB: [0x1786da0]: reset
564509: libmount: TAB: [0x1786da0]: free
564509: libmount: CACHE: [0x178e210]: free
TARGET SOURCE FSTYPE OPTIONS
/proc proc proc rw,nosuid,nodev,noexec,relatime
└─/proc/sys/fs/binfmt_misc systemd-1 autofs rw,relatime,fd=21,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
└─/proc/sys/fs/binfmt_misc binfmt_misc binfmt_misc rw,relatime
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: findmnt on 3.14-rc3 – only shows /proc in tree mode
2014-02-20 13:43 findmnt on 3.14-rc3 – only shows /proc in tree mode Mantas Mikulėnas
@ 2014-02-20 16:24 ` Karel Zak
0 siblings, 0 replies; 2+ messages in thread
From: Karel Zak @ 2014-02-20 16:24 UTC (permalink / raw)
To: Mantas Mikulėnas; +Cc: util-linux
On Thu, Feb 20, 2014 at 03:43:13PM +0200, Mantas Mikulėnas wrote:
> Using util-linux 2.24.1 on Arch Linux, running `findmnt` only shows
> mounts at or under "/proc", and ignores all other mount points
> (including "/"). This only happens in "tree" mode – if I run `findmnt
> --raw` it lists all mounts correctly.
>
> This happens with custom-built 3.14-rc3 kernel, but works fine with
> Arch's stock 3.13.x (the same Arch initramfs for both). Building
> `findmnt` from util-linux.git did not change anything.
>
> > $ findmnt
> > TARGET SOURCE FSTYPE OPTIONS
> > /proc proc proc rw,nosuid,nodev,noexec,relatime
> > └─/proc/sys/fs/binfmt_misc systemd-1 autofs rw,relatime,fd=21,pgrp=1,timeout=300,minprot
> > └─/proc/sys/fs/binfmt_misc binfmt_misc binfmt_mi rw,relatime
>
> It seems there is a small difference in /proc/self/mountinfo with 3.14;
> the entry for / looks like this:
>
> > 19 0 8:3 / / rw,relatime - ext4 /dev/sda3 rw,data=ordered
Hmm... it seems like the kernel does not have pseudo rootfs entry, so
the mount IDs starts from zero.
Fixed (commit 6c373810f5b1d32824371e9dff6ee5a006388f98),
it was bug in libmount mnt_table_get_root_fs().
Karel
--
Karel Zak <kzak@redhat.com>
http://karelzak.blogspot.com
^ permalink raw reply [flat|nested] 2+ messages in thread
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