Quote:
Originally Posted by
pobman
was not sure about the PP though how can I tell what I should use? So I left it as 32MB
When a disk is added to a VG it is divided in parts the size of PPsize.
So you can tell by applying LVM restrictions: a single disk can hold max. 1019 PPs. If you have disks approximately 32GB in size you can go with a PP size of 32MB, arriving at ~1000 PPs per disk. If your disks are considerably larger than this you would only be able to use the first 32GB (1019x32MB to be exact) of the disk, losing the rest of it.
Since it is a good idea of leaving room for expansion everywhere consider using a PP size which divides the disk in 200-500 parts. For example: for 72GB disks use a PP size of 256MB giving ~300 PPs. This would allow for the use of disks up to 260GB without losing space.
I hope this helps.
bakunin