[libvirt] Lifecycle events during reboot for KVM and Xen
Thomas Bechtold
thomasbechtold at jpberlin.de
Thu Aug 7 06:18:54 UTC 2014
Hi,
during debugging a problem[1] of Openstack Nova I recognized the following:
Doing a reboot (from inside of the VM with "reboot" command) on a kvm VM
doesn't send any lifecycle events (events debugged with [2]).
Doing the same thing with a xen VM leads to 2 events: First a
VIR_DOMAIN_EVENT_STOPPED and then a VIR_DOMAIN_EVENT_STARTED event.
The problem here is that for the xen case it doesn't seem to be possible
to recognize that a reboot is ongoing. For that reason the OpenStack
Nova component just forces the domain to stop after receiving the
VIR_DOMAIN_EVENT_STOPPED event.
Is it expected that the 2 drivers send different events for the same
action or a bug in qemu/xen/libvirt?
Cheers,
Tom
[1] https://bugs.launchpad.net/nova/+bug/1293480
[2] https://gist.github.com/toabctl/53f26989ad7634a3168b
More information about the libvir-list
mailing list