John R Pierce wrote:
In IBM AIX (where LVM kinda came from), the soft raid and volume management is rather tightly integrated, but in linux, its seperate.
There is not RAID in AIX LVM, just mirroring (well, stripes too but never mind that). Since you just map Logical Partitions to multiple Physical Partitions (same as Physical Extents, PE, in the linux implementation), it is easy to duplicate logical volumes to different physical volumes. You can do this online of course, as it is all below the filesystem/logical volume level. Migrating from one SAN to another, one disk to another, adding disks, splitting disks, removing disks. All is done in the LVM. As it should be.
The linux approach is much more primitive. Too bad the linux lvm guys used HP-UX LVM as their reference.
-- //Morten Torstensen //Email: morten@xxxxxxxxxxx //IM: Cartoon@xxxxxxxxx morten.torstensen@xxxxxxxxx And if it turns out that there is a God, I don't believe that he is evil. The worst that can be said is that he's an underachiever. _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos
