Re: expanding virtual disk based on lvm

[Avi Kivity <avi@redhat.com>]

On 09/04/2012 09:58 PM, Ross Boylan wrote:
> On Tue, 2012-09-04 at 15:53 +0300, Avi Kivity wrote:
>> On 08/28/2012 11:26 PM, Ross Boylan wrote:
>> > My vm launches with -hda /dev/turtle/VD0 -hdb /dev/turtle/VD1, where VD0
>> > and VD1 are lvm logical volumes.  I used lvextend to expand them, but
>> > the VM, started after the expansion, does not seem to see the extra
>> > space.
>> > 
>> > What do I need to so that the space will be recognized?
>> 
>> IDE (-hda) does not support rechecking the size.  Try booting with
>> virtio-blk.  Additionally, you may need to request the guest to rescan
>> the drive (no idea how to do that).  Nor am I sure whether qemu will
>> emulate the request correctly.
>> 
> Thank you for the suggestion.
> 
> I think the "physical" recognition of the new virtual disk size was
> accomplished when I restarted the VM, without any other steps.  I've had
> plenty of other problems, but I think at the VM level things are good.

Certainly restart (shutting down qemu and restarting it, not a reset)
works, I thought you wanted online resize.



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