On Sat, 2011-04-02 at 12:02 -0500, Jay Leafey wrote: > Kai Schaetzl wrote: > > I've replaced disks in a hardware RAID 1 with larger disks and enlarged > > the array. Now I have to find a way to tell LVM about the extra space. > > It seems there are two ways: > > 2. create another partition on the disk, pvcreate another pv and then add > > it to the existing volume group with vgextend > > No. 2 seems to be the easy way. Any objections? Correct. > > One I thought of: > > What does happen when I use No. 2 and I add new lvs? Can it happen that > > new lvs get "spanned" over both pvs or can I assure that a pv gets created > > using only one of the pvs? You can specify this [I believe] when you create an LV [which PVs are eligable]. > I ran into the same circumstances a while back and, after a lot of > consideration and testing, I chose door #2. It's the most expedient way > to do it if you have no other resources available, but it does have some > inefficiencies involved in it. +1 And doing so is the entire point of LVM.