[Gllug] Extending LVM volumes

[Andy Smith]

On Fri, Oct 20, 2006 at 11:32:37AM +0100, - Tethys wrote:
> On 10/19/06, Mike Brodbelt <mike at coruscant.demon.co.uk> wrote:
> 
> >Now if I want to extend this, I could of course add another disk, create
> >a PV on it, then use vgextend. However, when I add disks to this
> >machine, the result is that /dev/sdc will get bigger, as this itself is
> >a virtual device presented to the OS layer by a harware RAID controller.
> >I can't see any "pvextend" command, so if I double the size of /dev/sdc
> >one day, how do I extend the volume?
> 
> pvresize /dev/sdc

This is only available in slightly newer versions of LVM than that
which ships with e.g. Debian Sarge, by the way.  I had to do
something similar to this recently and was confused for a short
while about the "missing" pvresize command.

Installing newer lvm tools from source may also require a newer
kernel (I was already running a newer kernel so didn't check).

Cheers,
Andy
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