[gentoo-user] Re: Need a clue about merging logical volumes/groups with lvm2

[walt]

On 07/22/2012 01:46 AM, Neil Bothwick wrote:

> If you have a spare drive, I'd add a partition on that to the VG you want
> to keep,

Aha!  That's exactly the kind of outside-the-box hint I needed, thanks.
Now that I understand the concept, the rest should be "easy".  Just like
everything else about computers ;)

> increase the LV size and move everything over. Then remove the
> VGs from the second disk, add it to the first VG and use pvmove to move
> everything off the spare disk before removing it from the VG. You can
> continue to use the system while this runs, so this gives the least
> downtime with minimal hassle.