I have a testbed with 256 PVs. Running 'pvdisplay -c' takes .672 sec. Running 'pvs' takes 43sec! I've tried this on RHEL4U3 (lvm2-2.02.01-1.3.RHEL4) and RHEL4U4 (lvm2-2.02.06-6.0.RHEL4). lvm2 from U4 is actually slower than U3 on this issue (1m vs 43s). With RHEL4U3, pvs -vvvvv shows that a single device gets opened 264 times yet pvdisplay -c -vvvvv only opens a single device 8 times. With RHEL4U4, there are 261 opens for pvs and 5 opens for pvdisplay -c. Clearly there is something flawed in the pvs algorithm. I can dig deeper but I wanted to put this info out there in case others might have some insight. please advise, thanks. Mike _______________________________________________ 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/
