[libvirt] domain shutdown requests

[Christian Benvenuti (benve)]

> -----Original Message-----
> From: Wen Congyang [mailto:wency at cn.fujitsu.com]
> Sent: Thursday, September 15, 2011 6:42 PM
> To: Christian Benvenuti (benve)
> Cc: Libvirt
> Subject: Re: [libvirt] domain shutdown requests
> 
> At 09/16/2011 09:36 AM, Christian Benvenuti (benve) Write:
> >> -----Original Message-----
> >> From: Wen Congyang [mailto:wency at cn.fujitsu.com]
> >> Sent: Thursday, September 15, 2011 6:22 PM
> >> To: Christian Benvenuti (benve)
> >> Cc: Libvirt
> >> Subject: Re: [libvirt] domain shutdown requests
> >>
> >> At 09/16/2011 05:10 AM, Christian Benvenuti (benve) Write:
> >>> When you shutdown a domain that is in PAUSED state, the shutdown
> > will
> >>> not
> >>> take effect until you issue a resume cmd:
> >>>
> >>> # virsh suspend <domain_name>
> >>>
> >>>   <domain_name> is now PAUSED
> >>>
> >>> # virsh shutdown <domain_name>
> >>>
> >>>   <domain_name> does not shutdown, with the reason being that, for
> >>>   example in the case of a Linux Guest, the guest is not running
> and
> >>>   therefore there is no acpid running and able to process the
> >> shutdown
> >>>   request. Right?
> >>>
> >>> If now we issue a resume
> >>>
> >>> #virsh resume <domain_name>
> >>>
> >>>   the guest initiates the (pending) shutdown (ie, acpid processes
> > the
> >>>   pending request).
> >>
> >> I test it, and the guest is not shutdown after I resume the guest.
> >
> > I (re)tested it with 0.9.4 and it does shutdown.
> 
> The bevaior does not depend libvirt. It depends qemu.
> What is the version of qemu that you used?

0.14.0 (default on FC15).

Has anything changed on this in the newer releases?

/Chris

> Thanks
> Wen Congyang.
> 
> >
> >>> Is this the expected behavior?
> >>>
> >>> Shouldn't virsh do something like this when it issues a shutdown
> >>> request?
> >>>
> >>>   if (domain.state == PAUSED)
> >>>     resume(domain)
> >>>
> >>>   shutdown(domain)
> >>>
> >>> If yes, then I guess this logic should go
> >>> - into the cmdShutdown routine if we want to make it available to
> >> virsh
> >>> only,
> >>> or
> >>> - inside the driver's domainShutdown fn if we want to make it
> >> available
> >>> to any
> >>>   libvirt user.
> >>>
> >>> One more minor comment.
> >>> As of now, "virsh list" (or 'virsh domstate <domain>') does not
> >> provide
> >>> any way of
> >>> knowing if
> >>> - a domain is being shutdown
> >>> or
> >>> - a domain has a pending shutdown request (like in the example
> >> above).
> >>>
> >>> Would it make any sense to enhance the output of list/domstate ,
> for
> >>> example to
> >>> show something like this when libvirt issues a shutdown to a
> running
> >>> domain
> >>>
> >>>  Id Name                 State
> >>> ----------------------------------
> >>>   3 FC15-2               running (shutdown in progress)
> >>>
> >>> Or something like this when it issues a shutdown to a PAUSED
> domain?
> >>>
> >>> Id Name                 State
> >>> ----------------------------------
> >>>   3 FC15-2               PAUSED (shutdown request pending)
> >>
> >> The request is not pended...
> >
> > In my test it is: as soon as I do "resume", the guest initiates the
> > shutdown.
> >
> >> I perfer to resume the guest before shutdown it in ther driver.
> >
> > In  this case the shutdown command should return something like
> >
> >     "Domain XXX is in PAUSED state. You need to resume it first..."
> >
> > instead of
> >
> >     "Domain XXX is being shutdown".
> >
> > /Chris
> >
> >> Thanks
> >> Wen Congyang
> >>
> >>>
> >>> Thanks
> >>> /Chris
> >>>
> >>>
> >>>
> >>> --
> >>> libvir-list mailing list
> >>> libvir-list at redhat.com
> >>> https://www.redhat.com/mailman/listinfo/libvir-list
> >>>
> >
> >