You will need to extend your lv and then expand the underlying filesystem.
lvextend and resize2fs will be the tools you will want to use.
With an img file I am not sure of the exact steps, but it can't be too hard.
You will need to do this with the domu stopped.
--
Donny B.
On Monday, April 26, 2010 09:12 AM CDT, Dan Waterloo <dan@xxxxxxx> wrote:
> i'm trying to find a way to expand a selected partition in my DomU...
>
> when in a console in the domU, here are the disks available:
>
> [root@localhost ~]# df -h
> Filesystem Size Used Avail Use% Mounted on
> /dev/mapper/VolGroup00-LogVol00
> 13G 3.5G 8.1G 30% /
> /dev/xvda1 99M 21M 74M 22% /boot
> tmpfs 257M 0 257M 0% /dev/shm
>
> I'd like to expand the /dev/mapper/VolGroup00-LogVol00 disk to 25G
>
> The domU is based on an image file, 'webs.img' that resides on a disk in
> the Dom0.
> In the dom0, I add space to the webs.img file with the following command:
>
> |dd if=/dev/zero bs=1024k count=12288 >> webs.img
>
> then, when i create the webs domu, i.e. xm create webs;
> it starts, and the new space shows up as "unintialized' space |
> in the domu. (I see this using vnc to reach the desktop, and
> open the LVM tool to see the new space).
>
> The problem that I'm having is to 'attach' the unintialized space in the
> domU to the /dev/mapper/VolGroup00-LogVol00 disk, and then to expand the
> LogVol00 disk to take advantage of the space.
>
> I'm running Centos5 on the dom0, and in the domU. Xen is version 3.
>
> Any suggestions? if so, can you please be explicit as to _where_ to run the
> various
> commands, in the Dom0 or DomU? At this point, I'm pretty confused about
> what to do where....
>
> Thanks!
>
>
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