Public bug reported:
During start-up, I get about 8 complaints that LXCFS is starting and
stopping, until it goes red and says it failed.
The lxcfs.service unit journal contains a number of these:
Mar 18 21:12:36 ripper systemd[1]: lxcfs.service: Unit entered failed state.
Mar 18 21:12:36 ripper systemd[1]: lxcfs.service: Failed with result
'exit-code'.
Mar 18 21:12:36 ripper systemd[1]: lxcfs.service: Service hold-off time over,
scheduling restart.
Mar 18 21:12:36 ripper systemd[1]: Stopped FUSE filesystem for LXC.
Mar 18 21:12:36 ripper systemd[1]: Started FUSE filesystem for LXC.
Mar 18 21:12:37 ripper lxcfs[1539]: hierarchies:
Mar 18 21:12:37 ripper lxcfs[1539]: 0: fd: 5: hugetlb
Mar 18 21:12:37 ripper lxcfs[1539]: 1: fd: 6: cpu,cpuacct
Mar 18 21:12:37 ripper lxcfs[1539]: 2: fd: 7: cpuset
Mar 18 21:12:37 ripper lxcfs[1539]: 3: fd: 8: blkio
Mar 18 21:12:37 ripper lxcfs[1539]: 4: fd: 9: rdma
Mar 18 21:12:37 ripper lxcfs[1539]: 5: fd: 10: pids
Mar 18 21:12:37 ripper lxcfs[1539]: 6: fd: 11: memory
Mar 18 21:12:37 ripper lxcfs[1539]: 7: fd: 12: freezer
Mar 18 21:12:37 ripper lxcfs[1539]: 8: fd: 13: perf_event
Mar 18 21:12:37 ripper lxcfs[1539]: 9: fd: 14: net_cls,net_prio
Mar 18 21:12:37 ripper lxcfs[1539]: 10: fd: 15: devices
Mar 18 21:12:37 ripper lxcfs[1539]: 11: fd: 16: name=systemd
Mar 18 21:12:37 ripper lxcfs[1539]: 12: fd: 17: unified
Mar 18 21:12:37 ripper lxcfs[1539]: fuse: mountpoint is not empty
Mar 18 21:12:37 ripper lxcfs[1539]: fuse: if you are sure this is safe, use the
'nonempty' mount option
Mar 18 21:12:37 ripper systemd[1]: lxcfs.service: Main process exited,
code=exited, status=1/FAILURE
Mar 18 21:12:37 ripper fusermount[1580]: /bin/fusermount: failed to unmount
/var/lib/lxcfs: Invalid argument
Mar 18 21:12:37 ripper systemd[1]: lxcfs.service: Unit entered failed state.
Looking at /var/lib/lxcfs, it does, in fact, contain two directories "cgroup"
and "proc"
So, either:
1) This should only start once, but it's started multiple times, or
2) This directory should be empty but the script fails to make it so
ls -l /var/lib/lxcfs shows:
[21:26] jwatte@ripper:~$ ls -la /var/lib/lxcfs/
total 16
drwxr-xr-x 4 root root 4096 Aug 26 2017 ./
drwxr-xr-x 69 root root 4096 Mar 18 21:10 ../
drwxr-xr-x 13 root root 4096 Aug 26 2017 cgroup/
dr-xr-xr-x 2 root root 4096 Aug 26 2017 proc/
So, something somewhere made this directory non-empty, and now it fails
every time on start. (I sure didn't put anything here!) August 26
matches when I first installed this system, at the time running 17.04.
I recommend making the startup script simply nuke the contents of this
directory.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: lxcfs 2.0.8-0ubuntu1~17.10.2
ProcVersionSignature: Ubuntu 4.13.0-37.42-generic 4.13.13
Uname: Linux 4.13.0-37-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Mar 18 21:23:52 2018
InstallationDate: Installed on 2017-08-26 (204 days ago)
InstallationMedia: Ubuntu-Server 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: lxcfs
UpgradeStatus: Upgraded to artful on 2018-02-05 (41 days ago)
** Affects: lxcfs (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug artful
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https://bugs.launchpad.net/bugs/1756785
Title:
lxcfs startup failues because fuse directory not empty
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