[linux-lvm] lvm and md

[Jon Bendtsen]

Peter Yao wrote:
> 
> Should we build lvm volumns on top of soft raid(md) or build md on top
> of lvm volumns?
> I prefer to build md on top of lvm volumns because lvm can hide the
> hardware details from md. Just want to know how do you think about this.
> Or any URLs? Thanks.

why would you need to hide the hardware details from md ?
The way i do it is to md 2 disks together into a pair, and
then pvcreate it and add it to my VG. That way i can get 
more and more disks into the system. I have thought about
creating 2 VG's, and then run md ontop of that, but it's more
work, as you would have to resize 2 LV's, and besides, a harddisk
failure might trash one of your VG's. Meaning more repair work.



JonB