15 Oct
2008
15 Oct
'08
8:31 p.m.
I'm not really sure what the difference would be having the physical extent size as 64 MB versions 4 MB.
It's the smallest allocatable size of any PV you can give to an LV. Think of it like Allocation Unit Size. Also as pointed out above some limitations arise in different versions of LVM. RH defaults to 32M I believe...