That is what you get from a LVM2 setting with 1 VG containing all your disks and mirrored LVs. I didn't check lately, but PE allocators certainly need to be more intelligent with regard to not allowing mirror members on the same spin. regards, cvaroqui > Imagine having a pool of drives, where chunks of data are distributed evenly > across all drives in a redundant manner. If one drive dies, the chunks that > are not redundant anymore get their copies on the remaining drives, provided > that there's enough space left; if one or more drives are added to the > array, new chunks are written there until the balance is reached again. > > Disk space could be the first key for balancing across the drives, with > transfer rate or seek time maybe added later. Maybe the pool could even > adapt dinamically to the i/o patterns ... > > Am i dreaming (it's well over 4am here :) ? Or is something like this > possible? Maybe not with a md personality, but by some daemon that would be > taking care of a dm map? >
