Q: vgscan and RAID1

Hi

I'm using LVM1 (RedHat AS 3, kernel 2.4.21-27.ELsmp) on top of a RAID1 array. I was wondering whether vgscan will _always_ pick-up the md device and not one of the real block devices forming the RAID1? Could anyone please comment on this?

Thanks for your time.

Regards,
Chris