[libvirt] domain shutdown requests
shuming at linux.vnet.ibm.com
Fri Sep 16 03:21:10 UTC 2011
From the real physical usage case, the user can not shutdown a
suspended OS before the OS is resumed.
That is what Linux and Windows does now. And the user will get a
interactive pop-up window before the request is confirmed. So in
virtualized enviroment, it is better to resume the guest OS first.
However, whether to shutdown the OS directly after resume or requiring a
second shutdown is arguable.
Christian Benvenuti (benve):
> When you shutdown a domain that is in PAUSED state, the shutdown will
> 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).
> Is this the expected behavior?
> Shouldn't virsh do something like this when it issues a shutdown
> if (domain.state == PAUSED)
> If yes, then I guess this logic should go
> - into the cmdShutdown routine if we want to make it available to virsh
> - 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
> - 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
> 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)
> libvir-list mailing list
> libvir-list at redhat.com
More information about the libvir-list