[Bug 602744] Re: LTSP client can not run local apps after server is shutdown before client logs out when /tmp is not cleared on next boot.

[Frederick J. Henderson]

Hi Stéphane Graber!

Yes I rebooted all the LTSP cilents.

The problem is related to the temporary files that are stored on the
server for local apps. If the server was shut down improperly, say as in
my case with the clients connected(because of the other bug) the
temporary files are not removed. This causes local apps that were
running to not start if they are set to only allow one instance as they
find their old lock file in the /tmp directory. Other problems may occur
with programs.

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https://bugs.launchpad.net/bugs/602744

Title:
  LTSP client can not run local apps after server is shutdown before
  client logs out when /tmp is not cleared on next boot.

Status in “ltsp” package in Ubuntu:
  Incomplete

Bug description:
  Hi!

  I discovered this bug because of another bug that did not clean /tmp
  out on each boot.

  https://bugs.launchpad.net/ubuntu/+source/mountall/+bug/602723

  I accidentally shut the server down while on client was still logged
  in and working. This is possible from the Gnome server login by
  selecting shutdown. It is not possible if I am logged in and try to
  shutdown there in tells me I need to give a root password as the
  system policy prevents shutdown while other users are logged in. That
  however is another bug report for me to file.

  Upon the next boot the only the client that was logged in was no
  longer able to run some local applications. Other terminal were
  functioning normally. Other users logging on the client that was not
  shut down properly had the same problem. For example opera would start
  but the gui interface would never show. If you try to start Opera
  twice it pops up a window telling you.

  Running ltsp-localapps xterm would start an xterm window, but running
  either of the commands ps or ls would cause the xterm window to
  freeze. I could however run top and pwd.  Using Ctrl-Alt-F1 to go to
  the root terminal and I got the same results.

  I used the fix in the bug report above so that the /tmp folder would
  be cleared. Rebooted and everything works as it should.

  This is a problem that should be fixed as it is possible for a user to
  set their /tmp folder to only clear files older that a certain age.

   LTSP needs a way to cleanup its temp files on reboot if they exist in
  /tmp. I can only image how much grief this would cause a LTSP admin on
  Lucid when someone accidentally shuts the server down with say 25
  client connected and now 25 machine will not run local apps.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: ltsp-server 5.2.1-0ubuntu9
  ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
  Uname: Linux 2.6.32-23-generic i686
  Architecture: i386
  Date: Wed Jul  7 15:17:00 2010
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100427.1)
  PackageArchitecture: all
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ltsp

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