[libvirt] domain shutdown requests

[Christian Benvenuti (benve)]

> -----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.

> > 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
> >
> >
> >
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