On Sun, May 2, 2010 at 8:23 PM, Brendan Minish <bminish at minish.org> wrote: > On Sun, 2010-05-02 at 19:12 -0400, JohnS wrote: > >> Sounds good but I really do wonder if he has a hardware raid controller >> that does not support resizing of Linux LVM on top of the HW Raid Volume >> Set?? No one asked that part. > > Surely if the Volume group has unallocated space extending the LV should > not be a problem since it is not altering things as seen at the raid > controller level. Or am I missing something? Yes, the LVM layer is distinct from the raid level. In some other OSes it is more tightly integrated (bound, coupled, mashed together). It is possible, I suppose, that if the underlying physical volume is backed by an over-commited, data deduped device then resizing an LVM inside a VG could cause issues though :D..