[Bug 1858412] Re: systemd vacuuming does not work for remote journals

[Łukasz Zemczak]

Hello Kai, or anyone else affected,

Accepted systemd into bionic-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.40 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
bionic to verification-done-bionic. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-bionic. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: systemd (Ubuntu Bionic)
       Status: In Progress => Fix Committed

** Tags added: verification-needed-bionic

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https://bugs.launchpad.net/bugs/1858412

Title:
  systemd vacuuming does not work for remote journals

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Xenial:
  In Progress
Status in systemd source package in Bionic:
  Fix Committed
Status in systemd source package in Disco:
  Won't Fix
Status in systemd source package in Eoan:
  Fix Committed

Bug description:
  [impact]

  attempting to vacuum journals using -D with the 'root' (in journald
  terms) journal directory fails to perform any vacuuming.  This can
  lead to journal files continually increasing in size and filling up
  the filesystem.

  [test case]

  see original description below.

  [regession potential]

  this removes a check in the code when iterating journal directories
  during vacuuming, so any regression would likely occur during
  vacuuming, possibly causing failure to vacuum.

  [scope]

  this is fixed upstream by commit
  c488660e6edb3c1375ab62514a8df035c3d712bf which is included starting in
  version 244, so this is already included in Focal.  This is needed for
  Eoan, Bionic, and Xenial.

  [original description]

  systemd has an issue in regard to vacuuming remote journals:
  https://github.com/systemd/systemd/issues/2376 - this affects 18.04 as
  this version still has this problem.

  Steps to reproduce on "Description:     Ubuntu 18.04.3 LTS":

  root at 1:~# du -hs /var/log/journal/remote/
  8.6G	/var/log/journal/remote/
  root at 1:~# journalctl -D /var/log/journal/remote --vacuum-size=100M
  root at 1:~# du -hs /var/log/journal/remote/
  8.6G	/var/log/journal/remote/

  Would it be possible to backport this trivial patch
  https://github.com/systemd/systemd/pull/13924 into 18.04?

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