[linux-lvm] LVM with multi-path disks?

[Ragnar Kjørstad]

On Sat, Aug 04, 2001 at 05:40:49PM +0200, Luca Berra wrote:
> On Fri, Aug 03, 2001 at 04:16:20PM -0700, John DeFranco wrote:
> > Does LVM work with multi-path disks? For example I have
> > a fibre channel configuration in which I have two paths
> > to each disk. I pvcreate a disk and am able to use it
> > within a vg but when I reboot and do a vgscan, lvm cannot
> > find any vg's. If I remove the second path lvm can see
> > the vg fine.
> 
> John, there is an addition for multi-path to the md driver
> you can fetch it from the redhat source kernel rpm.
> you can then stack lvm on top of md to achieve your goal

E.g. you have a md0 device consisting of sda and sdb - would not lvm
find three different paths to the same data (sda, sdb, md0) when
scanning for physical volumes? Will that not cause problems?