[Bug 1301738] Re: upstart "Unable to watch configuration directory: No space left on device"

[James Hunt]

Hi Nick,

Thanks for reporting this issue. Yes, Upstart uses inotify so the error
shown is coming directly from the kernel. However, the error relates to
the lack of inotify watches, not the lack of disk space. What the error
you are seeing means is that Upstart will not recognise any changes to
the files in that directory, but aside from that it should remain fully
functional. Note that you can always force a rescan of /etc/init/ by
running:

    $ sudo initctl reload-configuration

Please can you attach the output from the following commands:

a) cat /proc/sys/fs/inotify/max_user_instances
b) cat /proc/sys/fs/inotify/max_user_watches
c)  grep -ir inotify /etc/sysctl*
d) sudo ls -l /proc/1/fd/

Also, a few questions:

1) Is /etc/init/ a symbolic link, or does it contain linked files?

2) Have you created a lot of sub-directories below /etc/init/ ?

3) can you try installing another tool that uses inotify to check the
behaviour:

  $ sudo apt-get install inotify-tools && inotifywait -m /etc/init

4) Is trusty installed in a chroot / container / VM here?

5) If you reboot, does the message persist? (it would help if you booted
with '--debug' and without 'splash' and without 'quiet':

    http://upstart.ubuntu.com/cookbook/#add-verbose-or-debug-to-the-
kernel-command-line

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https://bugs.launchpad.net/bugs/1301738

Title:
  upstart "Unable to watch configuration directory: No space left on
  device"

Status in “upstart” package in Ubuntu:
  New

Bug description:
  I recently upgraded to Trusty 14.04 and receive the following messages
  in dmesg:

  [  945.189268] init: upstart-udev-bridge main process (476) terminated with status 1
  [  945.189277] init: upstart-udev-bridge main process ended, respawning
  [  945.189405] init: upstart-socket-bridge main process (673) terminated with status 1
  [  945.189412] init: upstart-socket-bridge main process ended, respawning
  [  945.189507] init: upstart-file-bridge main process (1120) terminated with status 1
  [  945.189513] init: upstart-file-bridge main process ended, respawning
  [  955.783676] init: /etc/init: Unable to watch configuration directory: No space left on device
  [  969.453559] init: /etc/init: Unable to watch configuration directory: No space left on device

  The last (inotify?) messages about space aren't valid -- df shows
  every device has tons of space available.

  
  semenko at exon:~$ uname -ar
  Linux exon 3.13.0-20-generic #42-Ubuntu SMP Fri Mar 28 09:56:33 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

  semenko at exon:~$ apt-cache policy upstart
  upstart:
    Installed: 1.12.1-0ubuntu1
    Candidate: 1.12.1-0ubuntu1
    Version table:
   *** 1.12.1-0ubuntu1 0
          500 http://cosmos.cites.illinois.edu/pub/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status

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