[Bug 2072647] Re: [SRU] virtlogd not rotating logs properly

[David Negreira]

Hi Heitor
Thanks for your comment/review, I have now added a debdiff for oracular as well as modified the the origin to point to the commit where the fix is done upstream, so this is now ready to be reviewed again, hence I re-subscribed ubuntu-sponsors.

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https://bugs.launchpad.net/bugs/2072647

Title:
  [SRU] virtlogd not rotating logs properly

Status in libvirt package in Ubuntu:
  In Progress
Status in libvirt source package in Noble:
  In Progress
Status in libvirt source package in Oracular:
  In Progress

Bug description:
  [Impact]

   When one enables max_age_days on /etc/libvirt/virtlogd.conf, for
  example by setting it to max_age_days = 1, the log files are not
  rotated correctly and we see this error on virtlogd:

  [Test Case]

  1) Launch a couple of dummy VMs to ensure that there are some logs in /var/log/libvirt
  2) Edit /etc/libvirt/virtlogd.conf and ensure that the max_age_days setting is uncommented as per the following:
     max_age_days = 1
  3) sudo systemctl restart virtlogd
  4) Wait 24 hours. (There is no way to accelerate the timer unless one edits the source code)
  5) Verify that logs are cleaned up and there are no errors in syslog or virtlogd journal like the following:
     Feb 28 08:58:57 dixie virtlogd[7205]: internal error: Failed to parse rotated index from ''

  [Where problems could occur]

  There could be some issues with virtlogd, but the code path only executes when max_age_days is different than 0.
   In the event of a regression,  one could disable the setting by commenting max_age_days.

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