On Wed, Feb 18, 2009 at 06:20:59PM -0500, Ross Walker wrote: > On Feb 18, 2009, at 2:29 PM, Ray Van Dolson <rayvd at bludgeon.org> wrote: > > > On Wed, Feb 18, 2009 at 11:12:13AM -0800, John R Pierce wrote: > >> Scott Silva wrote: > >>> You can make LVM over raid 1's in Disk Druid, but I don't think it > >>> will do > >>> raid 10. And you cannot boot from software raid 5 (yet). > >>> > >> > >> a LVM over several raid 1's is effectively raid10 as LVM will > >> stripe the > >> volumes across the devices. It would be nice if LVM could do > >> mirorring too (like LVM on AIX does) and was tighter integrated > >> with the > >> file system tools (again, like LVM on AIX... grow a LV and it > >> grows the > >> JFS thats sitting on it, transparently and online). > >> > > > > Can't Linux LVM do mirroring? I swear I read that it could in the man > > page. Never have tried it however and you certainly can't set it up > > from disk druid in anaconda. > > Lvm can do mirroring, but of requires a third drive to do mirror > logging which kind of defeats the whole raid1 concept, I guess if you > have a VG of a plethora of drives this is no biggie. > > And besides grub still after all these years does not support booting > LVM volumes. > > Jeez, you think with the Solaris folk able to boot off of ZFS now from > grub we'd have the ability to boot off of LVM by now! Hehe, I guess the fact that we can achieve fairly similar results using md + LVM has made it a lower priority. :-/ Ray