topic Doubt regarding PE size in Operating System - HP-UX

Doubt regarding PE size

Nikhil_1 — Fri, 20 Sep 2002 14:19:59 GMT

Hi,

LE=Logical Extent
PE=Physical Extent
VG=Volume Group
PVG=Physical Volume Group

From the LVM documentation, I gather that
- LE size equals PE size.
- A VG can consist of multiple PVGs.

Can I configure PEs in one PVG with one size (say 2 MB) and
PEs in another PVG (within same VG) with another size (say 8 MB)?

Or PE size must be same in the entire VG (regardless of the PVGs)?

With regards,
Nikhil

Re: Doubt regarding PE size

S.K. Chan — Fri, 20 Sep 2002 14:22:48 GMT

The latter is true ..
"PE size must be same in the entire VG (regardless of the PVGs"

Re: Doubt regarding PE size

Patrick Wallek — Fri, 20 Sep 2002 14:24:17 GMT

Physical Extent (PE) size is configured for the ENTIRE VG at creation time of the VG.

PE size is an option of the VG create command, so no you can't have 1 PV in a VG with a different PE size from another PV. That just isn't going to happen.

Re: Doubt regarding PE size

Nikhil_1 — Fri, 20 Sep 2002 14:31:41 GMT

Thanks Guys.

With regards,
Nikhil