<div dir="ltr">Thanks Lee.<div>it was causing problems for a long time.</div><div>Thanks,<br>Arkady</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Aug 18, 2021 at 5:09 PM Lee Yarwood <<a href="mailto:lyarwood@redhat.com">lyarwood@redhat.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello all,<br>
<br>
For a while now we've been attempting to track down some infrequent but<br>
annoying Tempest test cleanup failures in CI when detaching volumes from<br>
an instance. Finally after rewriting part of the Tempest logic<br>
controlling the cleanup we've been able to confirm that this is being<br>
caused by a kernel panic within the instance at boot time as documented<br>
in the following bug:<br>
<br>
Failure to detach volume during Tempest test cleanup due to APIC related<br>
kernel panic within the guest OS<br>
<a href="https://bugs.launchpad.net/nova/+bug/1939108" rel="noreferrer" target="_blank">https://bugs.launchpad.net/nova/+bug/1939108</a><br>
<br>
This had been previously found in 2014 but at the time a fix was only<br>
proposed to Nova that would solve this when using a supplied kernel<br>
image:<br>
<br>
cirros 0.3.1 fails to boot<br>
<a href="https://bugs.launchpad.net/cirros/+bug/1312199" rel="noreferrer" target="_blank">https://bugs.launchpad.net/cirros/+bug/1312199</a><br>
<br>
Use no_timer_check with soft-qemu<br>
<a href="https://review.opendev.org/c/openstack/nova/+/96090" rel="noreferrer" target="_blank">https://review.opendev.org/c/openstack/nova/+/96090</a><br>
<br>
Most (all?) of our CI currently running with [libvirt]virt_type=qemu<br>
uses the full Cirros 0.5.2 image. Does anyone have any suggestions on<br>
the best way of modifying the image(s) we use in CI to use the<br>
no_timer_check kernel command line arg?<br>
<br>
Thanks in advance,<br>
<br>
-- <br>
Lee Yarwood A5D1 9385 88CB 7E5F BE64 6618 BCA6 6E33 F672 2D76<br>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Arkady Kanevsky, Ph.D.<div>Phone: 972 707-6456</div><div>Corporate Phone: 919 729-5744 ext. 8176456<br><div></div></div></div></div>