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Re: [Xen-users] Resize domU block device?

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Andy Smith <andy@xxxxxxxxxxxxxx>
  • Date: Fri, 23 Nov 2007 18:40:31 +0000
  • Delivery-date: Sat, 24 Nov 2007 17:16:30 -0800
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Openpgp: id=BF15490B; url=http://strugglers.net/~andy/pubkey.asc

Hi Ralf,

On Mon, Nov 19, 2007 at 06:23:02PM +0100, Ralf Müller wrote:
> The day before I tested to do "lvresize -L+20G" on a logical volume
> given to a domU and do a "xfs_growfs" of this volume inside the domU
> it belongs to. It didn't notice that until I rebooted the domU.
> Thatswhy I asked here. Is this a new feature which is not in my Xen 3.1?

Not that I am aware of.  It simply does not work, despite the many
people who will claim it does without actually trying it.

If it is not the domU's root fs then you can unmount it in the domU,
from dom0 detach the block device, then re-attach the block device
again and the domU will see the new size.  Obviously not possible if
this is the domU's root fs.


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