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Re: [Qemu-devel] [PATCH][RESEND] Add monitor command for system_reboot


From: Daniel P. Berrange
Subject: Re: [Qemu-devel] [PATCH][RESEND] Add monitor command for system_reboot
Date: Wed, 8 Jul 2009 15:10:58 +0100
User-agent: Mutt/1.4.1i

On Wed, Jul 08, 2009 at 05:04:45PM +0300, Avi Kivity wrote:
> On 07/08/2009 04:05 PM, Anthony Liguori wrote:
> >>OS is free to ignore ACPI shutdown request and in this case
> >>reboot_requested will not be reset. On the next user initiated
> >>guest power down qemu will reboot instead of exit.
> >
> >Indeed.  This is what has kept me from applying this but I just can't 
> >think of any better solution.
> >
> >Any ideas?
> >
> >The drive behind implementing this feature is so that we can implement 
> >a proper virDomainReboot in libvirt.
> >
> 
> How does Xen hvm implement it?

You have to install the Xen paravirt drivers, so Xen HVM handles graceful
shutdown/reboot in the same way as pure Xen paravirt. They watch a flag
in xenstore and invoke shutdown -r / -h according to the flag.

Regards,
Daniel
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