[libvirt-users] Duplicate reboot events

[Martin Kletzander]

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

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

>This is reproducible 100% of the time by doing /sbin/reboot from within a VM started with qemu-kvm.  Any ideas on whats going on?
>
>Let me know if any other information would be useful.
>
>Thanks
>
>Martins
>

>#!/usr/bin/env python
>
>import libvirt
>import time
>
>def RBcallback(conn, dom, opaque):
>    print "Reboot: Domain %s(%s)" % (dom.name(), dom.ID())
>    print time.time()
>
>if __name__ == '__main__':
>
>    libvirt.virEventRegisterDefaultImpl()
>
>    conn = libvirt.openReadOnly('qemu:///system')
>
>    conn.domainEventRegisterAny(None, libvirt.VIR_DOMAIN_EVENT_ID_REBOOT, RBcallback, None)
>
>    while True:
>        libvirt.virEventRunDefaultImpl()

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