Kelly Byrd wrote: > > > On Sat, 22 Sep 2007 18:36:41 -0700, Kelly Byrd <kbyrd-lvm@memcpy.com> > wrote: >> Two questions really: >> >> I'm going to use lvm to partition up 4 equal size partitions. >> I can either use the md driver to RAID0 them the make /dev/md0 >> my PV, or just use the 4 partitions as PVs and stripe across >> them. >> >> How does lvm2 striping compare with md's RAID0 as far as speed? >> I don't quite get how it stripes on chunk sizes smaller than >> a PE, but a 4MB stripe size seems crazy. >> >> Finally, what's the tuning advice for LVM2 striping? I usually >> create my RAID0 or RAID5 with 128k chunk sizes, is it similar >> for LVM2 striping? >> >> > > anyone? This is merely my own opinion, but md was designed to be THE software raid mechanism. So, my preference would be to establish a RAID md device and make that into a PV. Of course, I don't believe in non-RAID (i.e. RAID0) anyhow. Maybe someone else will chime in on this one. -- Chris Cox Sr. Unix Sys Admin _______________________________________________ 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/
