Re: [libvirt-users] Duplicate reboot events

Innus, Martins
2017-05-17T15:14:18Z

On May 16, 2017, at 4:28 PM, Martin Kletzander
<mkletzan@redhat.com<mailto:mkletzan@redhat.com>> wrote:

On Tue, May 16, 2017 at 08:11:54PM +0000, Innus, Martins wrote:

On May 16, 2017, at 3:49 PM, Martin Kletzander
<mkletzan@redhat.com<mailto:mkletzan@redhat.com>> wrote:

On Tue, May 16, 2017 at 06:41:05PM +0000, Innus, Martins wrote:
Hi,

Running on:

$ cat /etc/redhat-release
CentOS Linux release 7.3.1611 (Core)

And:

$ rpm -qa |grep libvirt
libvirt-daemon-2.0.0-10.el7_3.5.x86_64
libvirt-daemon-driver-qemu-2.0.0-10.el7_3.5.x86_64
libvirt-daemon-driver-secret-2.0.0-10.el7_3.5.x86_64
libvirt-client-2.0.0-10.el7_3.5.x86_64
libvirt-daemon-driver-network-2.0.0-10.el7_3.5.x86_64
libvirt-daemon-driver-storage-2.0.0-10.el7_3.5.x86_64
libvirt-daemon-config-nwfilter-2.0.0-10.el7_3.5.x86_64
libvirt-daemon-config-network-2.0.0-10.el7_3.5.x86_64
libvirt-daemon-driver-nodedev-2.0.0-10.el7_3.5.x86_64
libvirt-2.0.0-10.el7_3.5.x86_64
libvirt-python-2.0.0-2.el7.x86_64
libvirt-daemon-driver-nwfilter-2.0.0-10.el7_3.5.x86_64
libvirt-daemon-driver-lxc-2.0.0-10.el7_3.5.x86_64
libvirt-daemon-driver-interface-2.0.0-10.el7_3.5.x86_64

I’m seeing duplicated reboot events when using the python event api.  Use is
simplified down to the simple test case attached.  Running with that results in:

$ sudo ./libvirt_events_single.py
Reboot: Domain i-06945b37(21)
1494958504.72
Reboot: Domain i-06945b37(21)
1494958504.74


Can you try with newer libvirt?

I’m not sure.  I will have to see if I can build it, unless there is a repo
somewhere with centos7 rpms.  I assume by this you mean that you don’t see this
with current libvirt?

Does this happen with 'virsh event
--loop --event lifecycle’?

“lifecycle” shows no output, but with “reboot” or “all”:

$ sudo virsh event --loop --all
event 'reboot' for domain i-06945b37
event 'reboot' for domain i-06945b37


Is there anything fishy going on when looking at the console (VN/spice)
during that reboot?


Don’t see anything unusual.  I can send you the full console output if you want,
but I don’t see anything strange.


I meant the graphical terminal, but that won't help much.  I tried
gathering as much info.  So we just need to figure out whether QEMU
sends us the event multiple times.  Could you either set up debug logs
[1] and then look for that in them or use the qemu-monitor.stp systemtap
script to show you what's happening on the monitor?  If it comes from
qemu two times, than there's not much we can do about it.



Nevermind, as far as I can tell, this is a bug in QEMU and is closed as a
WONTFIX: https://bugzilla.redhat.com/show_bug.cgi?id=951525

Thanks for the debugging help.

Martins