** Changed in: nova
Status: In Progress => Opinion
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https://bugs.launchpad.net/bugs/1311082
Title:
The details of libvirt events are not outputted to the log when nova-
compute handles libvirt events.
Status in OpenStack Compute (Nova):
Opinion
Bug description:
Currently, the details of libvirt events are not outputted to the log when
nova-compute handles libvirt events.
The details of libvirt events should be outputted to the log for
troubleshooting.
By the following blue print, nova has been able to catch libvirt
events and synchronize the VM state with 'actual' state immediately.
Compute Driver Events
https://blueprints.launchpad.net/nova/+spec/compute-driver-events
When nova-compute handles libvirt events, it outputs which libvirt
events(EVENT_LIFECYCLE_STARTED, EVENT_LIFECYCLE_STOPPED,
EVENT_LIFECYCLE_PAUSED, EVENT_LIFECYCLE_RESUMED) are received.
But the details(cause/reason) of libvirt events are not outputted.
For example, in the case of
VIR_DOMAIN_EVENT_STOPPED(=EVENT_LIFECYCLE_STOPPED), the details are as
follows(*1).
VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN = 0 Normal shutdown
VIR_DOMAIN_EVENT_STOPPED_DESTROYED = 1 Forced poweroff from host
VIR_DOMAIN_EVENT_STOPPED_CRASHED = 2 Guest crashed
VIR_DOMAIN_EVENT_STOPPED_MIGRATED = 3 Migrated off to another host
VIR_DOMAIN_EVENT_STOPPED_SAVED = 4 Saved to a state file
VIR_DOMAIN_EVENT_STOPPED_FAILED = 5 Host emulator/mgmt failed
VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT = 6 offline snapshot loaded
VIR_DOMAIN_EVENT_STOPPED_LAST = 7
*1: http://libvirt.org/html/libvirt-libvirt.html
If the details of libvirt events are outputted to the log, it will be
useful in troubleshoot.
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