my understanding was that this is an OLD problem (as designed?) Conceivably LVM could be written to be smart enough to query all of the underlying PV and arrive at the lowest common value <= PhysicalExtent-Size. But it was probably more expedient to just hard code it to the native BIO value. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/