Re: KVM status and dynamic mem/cpu question.

[jd <jdsw2002@yahoo.com>]

Thanks David.

I tried the cpu_set command... it exits the VM :( (kvm-70 on Fedora)

-- What about memory ?
-- Any one else on paused state at least ? (can I look at CPU reg.. or something ?)

Thanks
/Jd



--- On Wed, 7/9/08, David Mair <dmair@mair-family.org> wrote:

> From: David Mair <dmair@mair-family.org>
> Subject: Re: KVM status and dynamic mem/cpu question.
> To: 
> Cc: "KVM List" <kvm@vger.kernel.org>
> Date: Wednesday, July 9, 2008, 8:44 AM
> jd wrote:
> > hi
> > 
> > 1.   It there away to know various states of a VM via
> console (or any other means?) ?
> >        -- Running
> >        -- Paused
> >        -- Booting/Shutting down
> >        -- crashed
> >       etc ?
> >     I cant find any console command that can tell
> that. If this is not available, is there a plan to add it ?
> 
> I don't think booting and shutting down have any
> meaning to qemu. It's just a 
> physical PC for these purposes. Booting and shutting down
> are runtime that only 
> means something to the software running on the PC. As far
> as the PC is concerned it 
> feels pretty much either on or off.
> 
> The same is almost true for crashed IMO. Crashed is a
> runtime state for the software 
> running on the PC, not a state of the hardware - except for
> a small number of cases.
> 
> That leaves you with running or paused. I can't find a
> way to tell those states from 
> the console.
> 
> > 2. Is there a way to shrink/expand memory or VCPUs for
> a running VM ?
> 
> 
> I've never tried it but in the qemu console:
> 
> (qemu) help
> 	.
> 	.
> 	.
> cpu_set cpu [online|offline] -- change cpu state
> 	.
> 	.
> 	.
> 
> As described, it won't let you add CPUs above what you
> specified on the command line 
> that started the VM but it will let you do effectively the
> same thing as removing 
> and adding CPUs from/to the guest.
> 
> ---
> David.
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