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Re: [Xen-devel] vbd resize

To: James Harper <james.harper@xxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] vbd resize
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Wed, 15 Jul 2009 11:20:49 +0300
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On Thu, Jul 09, 2009 at 02:17:24PM +0300, Pasi Kärkkäinen wrote:
> On Thu, Jul 09, 2009 at 08:11:09PM +1000, James Harper wrote:
> > I'm investigating what would be required for a DomU's block device to be
> > resized (well... grown at least) without having to reboot the DomU.
> > 
> > Does the commercial product support this?
> > 
> This has been discussed here a couple of times, and it's also a feature
> request for Xen 4.0.
> I don't think it would be a lot of code to support this.. the upstream Linux
> kernel already supports SCSI disk online resizing. Also RHEL 5.3 kernel 
> supports
> online SCSI disk resizing.
> Earlier thread:
> http://lists.xensource.com/archives/html/xen-devel/2008-09/msg00158.html

James: You might have enough knowledge of Xen internals to add support for
vbd resize to Xen hypervisor/tools :)

Then the next step would be to support it in domU kernels/drivers.

-- Pasi

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