[openstack-dev] [nova] [libvirt] The risk of hanging when shutdown instance.

Rui Chen chenrui.momo at gmail.com
Sat Mar 28 10:06:27 UTC 2015


Thank you for reply, Chris.


2015-03-27 23:15 GMT+08:00 Chris Friesen <chris.friesen at windriver.com>:

> On 03/26/2015 07:44 PM, Rui Chen wrote:
>
>> Yes, you are right, but we found our instance hang at first
>> dom.shutdown() call,
>> if the dom.shutdown() don't return, there is no chance to execute
>> dom.destroy(),
>> right?
>>
>
> Correct.  The code is written assuming dom.shutdown() cannot block
> indefinitely.
>
> The libvirt docs at "https://libvirt.org/html/libvirt-libvirt-domain.html#
> virDomainShutdown" say "...this command returns as soon as the shutdown
> request is issued rather than blocking until the guest is no longer
> running."
>
> If dom.shutdown() blocks indefinitely, then that's a libvirt bug.
>
>
> Chris
>
>
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