VM constantly tries to access /run/shm/lttng-ust-wait-5

Hi,

Looking through the history of bug 1432644, AFAICS it was never "fixed", it was worked around.

Ceph was built without support for lttng. The libvirt patch was only to *silence* the denial for attempted access to lttng, not to grant the access.

Are you asking only to update the explit denial to keep your logs cleaner? If so that's trivial as you say.

@sage-newdream, @jamespage, @jdstrand - is there any news on properly supporting lttng support built into ceph for libvirt?

Serge,

Yes, because it creates a *tremendous* amount of messages in the system log which causes other issues to go unnoticed (or forces us to implement filtering to drop this -- both of which are not ideal).

In a loaded system of 40 VMs, the syslog is bombarded with these messages non-stop. Ideally fixing lttng would be nice but if that's going to take a long time, addressing this for now would be good

Thanks,
Mohammed

Thanks - I'll push that fix to xenial and SRU to wily.

Where else do you need it?

Thank you Serge. We would appreciate if it can make it the OpenStack cloud archive. We're running Liberty on Trusty at the moment.

This bug was fixed in the package libvirt - 1.2.21-2ubuntu7

---------------
libvirt (1.2.21-2ubuntu7) xenial; urgency=medium

  * d/apparmor/libvirt-qemu: silence denial to shm/lttng file since shm
    mountpoint has moved (LP: #1529319)

 -- Serge Hallyn <email address hidden> Mon, 11 Jan 2016 11:55:28 -0800

@mnaser,

We need a simple testcase in the Description for SRU. do you know the minimal set of things needed to make this happen? Are you running an unmodified ceph, or ceph from a particular ppa which re-enables lttng?

Hello Mohammed, or anyone else affected,

Accepted libvirt into wily-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/libvirt/1.2.16-2ubuntu11.15.10.4 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 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 to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

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

The fix for this bug has been awaiting testing feedback in the -proposed repository for wily for more than 90 days. Please test this fix and update the bug appropriately with the results. In the event that the fix for this bug is still not verified 15 days from now, the package will be removed from the -proposed repository.

The package was removed due to its SRU bug(s) not being verified in a timely fashion.