touch-packages team mailing list archive

[Martin Pitt <martin.pitt@xxxxxxxxxx>]

Olli, Maarten, could you please test the package in vivid-proposed
instead of my PPA, so that we can officially verify this to get it into
vivid-updates? Thank you in advance!

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https://bugs.launchpad.net/bugs/1448259

Title:
  Systemd does not send SIGTERM first on shutdown

Status in systemd:
  Unknown
Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Vivid:
  Fix Committed
Status in systemd package in Fedora:
  Unknown

Bug description:
  It has been normal that applications first get the SIGTERM signal
  before SIGKILL on shutdown/reboot in order to successfully finish any
  pending tasks. Now it seem this logic has been changed to something
  else, causing problems to mosh and many others:

  https://bugs.launchpad.net/ubuntu/+source/mosh/+bug/1446982

  SIGTERM  suggestion can be seen here:

  http://unixhelp.ed.ac.uk/CGI/man-cgi?shutdown+8

  I created this error report to find out the correct way for
  applications to fix this problem or to create one fix to systemd,
  bringing back the old "BSD shutdown" functionality.

  This report is for Ubuntu 15.04.

  SRU TEST CASE:
   - Open a terminal, enter some commands, then run "reboot".
   - After a reboot, chances are very high that your bash history does not contain your most recently typed commands
   - With the updated package, the bash history should be intact.

  REGRESSION POTENTIAL:
   - The original commit was applied because of an inherent race condition with cgroup's release_agent -- in rare corner cases an nspawn container (probably also LXC) can miss them. In that case it's possible that you instead get a 90s timeout on the unit that is shutting down. But this does not mean data loss, just a rare shutdown hang from containers (for the record, I never actually saw that hanging with LXC), so I think it's a good trade-off.

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