should disable journald rate limiting in live-server session

[Michael Hudson-Doyle]

[Impact]
subiquity displays the curtin output by running curtin under systemd-cat. curtin can produce pretty large amounts of output and can hit journald rate limits, particularly when it fails (which is of course when you most want to see the output!). We should disable the rate limit in the installer.squashfs.

[Test case]
I guess make a CD with a deliberately broken subiquity that causes curtin to fail in a verbose way and ensure that all output is visible in subiquity's "view full log" screen.

[Regression potential]
Having no rate limit increases the chances of running the live system out of RAM if curtin is especially verbose I guess, but this would be an issue if we were spooling the log output to a file too.

[Dimitri John Ledkov (xnox)]

We didn't land this still?

[Launchpad Janitor (janitor)]

This bug was fixed in the package livecd-rootfs - 2.534

---------------
livecd-rootfs (2.534) cosmic; urgency=medium

  [ Michael Hudson-Doyle ]
  * Disable journald rate limiting in the live-server live session.
    (LP: #1776891)

  [ Steve Langasek ]
  * generate all tar files with --xattrs. LP: #1302192.

 -- Steve Langasek <email address hidden> Mon, 06 Aug 2018 13:12:02 -0700

[Łukasz Zemczak (sil2100)]

Hello Michael, or anyone else affected,

Accepted livecd-rootfs into bionic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/livecd-rootfs/2.525.7 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 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!

[Michael Hudson-Doyle (mwhudson)]

So it turns out the fix in cosmic isn't actually correct :(

[Łukasz Zemczak (sil2100)]

Ok, dropping this from bionic-proposed then - overwriting it with the next livecd-rootfs SRU.

[Łukasz Zemczak (sil2100)]

Hello Michael, or anyone else affected,

Accepted livecd-rootfs into bionic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/livecd-rootfs/2.525.8 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 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!

[Michael Hudson-Doyle (mwhudson)]

I tested this by booting a live-server ISO, running systemd-cat -t testing seq 10000 and checking that all 10001 lines of output ended up in the journal.

[Łukasz Zemczak (sil2100)]

The verification of the Stable Release Update for livecd-rootfs has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

[Launchpad Janitor (janitor)]

This bug was fixed in the package livecd-rootfs - 2.525.8

---------------
livecd-rootfs (2.525.8) bionic; urgency=medium

  * Disentangle enabling universe in the final image a little from having
    PREINSTALLED=true set and enable it for a live-server build.
    (LP: #1783129)
  * Fix live-server journald config snippet to actually disable journald rate
    limiting.

livecd-rootfs (2.525.7) bionic; urgency=medium

  * Disable journald rate limiting in the live-server live session.
    (LP: #1776891)

 -- Michael Hudson-Doyle <email address hidden> Tue, 28 Aug 2018 11:03:37 +1200