Reproduced with upstream code. On Tue, Mar 11, 2014 at 04:34:38PM +0800, xiaowei wrote: > I tracked this a little more, and found that it's due to the strip 1 > parameter and when the first PV leaves no enough extends, it need 2 area It only needs 1 area - that part is correct - but it's still behaving as if it's setting up an N-stripe extension where it pairs up the allocations with the original stripes. Alasdair _______________________________________________ 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/