[Bug 1839290] Re: systemd doesn't restart a service after crashes

[Vladimir Kononov]

Hello, everyone.

Here's a debdiff patch with a backport of upstream patch to xenial
branch of systemd.

I've successfully built a modified source and deployed it to some xenial
machines — it works as intended, failed service restart correctly, just
as intended by Restart=always policy.

Before:
systemd[1]: vpp.service: Main process exited, code=dumped, status=6/ABRT
systemd[1]: Stopped vector packet processing engine.
systemd[1]: vpp.service: Unit entered failed state.
systemd[1]: vpp.service: Failed with result 'core-dump'.
systemd[1]: vpp.service: Service hold-off time over, scheduling restart.
systemd[1]: vpp.service: Failed to schedule restart job: Transaction is destructive.
systemd[1]: vpp.service: Unit entered failed state.
systemd[1]: vpp.service: Failed with result 'resources'.

After:
systemd[1]: vpp.service: Main process exited, code=dumped, status=6/ABRT
systemd[1]: Stopped vector packet processing engine.
systemd[1]: vpp.service: Unit entered failed state.
systemd[1]: vpp.service: Failed with result 'core-dump'.
systemd[1]: vpp.service: Service hold-off time over, scheduling restart.
systemd[1]: Stopped vector packet processing engine.
systemd[1]: Starting vector packet processing engine...



** Patch added: "debdiff for xenial systemd branch"
   https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1839290/+attachment/5281628/+files/lp-1839290-xenial.debdiff

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https://bugs.launchpad.net/bugs/1839290

Title:
  systemd doesn't restart a service after crashes

Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  Affected versions of OS and systemd:
  $ cat /etc/issue
  Ubuntu 16.04.6 LTS \n \l
  $ systemd --version
  systemd 229
  +PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN

  Affected packages:
  systemd 229-4ubuntu21.22 and previous versions.

  Expected behaviour you didn't see:
  Scheduling restart of failed service.
  A process crashed by sigabrt and didn't restart.

  Description:
  The bug was reported to a systemd upstream repository: https://github.com/systemd/systemd/issues/11456
  The bug was fixed and accepted to the master branch: https://github.com/systemd/systemd/pull/11467/files

  Action:
  Include this patch to Ubuntu 16.04 and other version of Ubuntu which are supported.

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