On Thu, May 29, 2014 at 09:47:20PM +0100, Richard W.M. Jones wrote: > Is there a reason why fast and slow devices need to be in the same VG? > I've talked to two other people who found this very confusing. No one > knew that you could manually place LVs into different PVs, and it's > something of a pain to have to remember to place LVs every time you > create or resize one. It seems it would be a lot simpler if you could > have the slow PVs in one VG and the fast PVs in another VG. We recommend you use tags. Much more flexible/dynamic solution than forcing the use of separate VGs. pvchange --addtag ssd pvs -o+tags lvcreate ... $vg @ssd to restrict the allocation the command performs to the PVs with the 'ssd' tag. Alasdair _______________________________________________ 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/