John Rowe wrote:
All this discussion has led me to wonder if we users of linux RAID have
a clear consensus of what our priorities are, ie what are the things we
really want to see soon as opposed to the many things that would be nice
but not worth delaying the important things for. FWIW, here are mine, in
order although the first two are roughly equal priority.
1 "Warm swap" - replacing drives without taking down the array but maybe
having to type in a few commands. Presumably a sata or sata/raid
interface issue. (True hot swap is nice but not worth delaying warm-
swap.)
That seems to work now. It does assume that you have hardware hot swap
capability.
2 Adding new disks to arrays. Allows incremental upgrades and to take
advantage of the hard disk equivalent of Moore's law.
Also seems to work.
3. RAID level conversion (1 to 5, 5 to 6, with single-disk to RAID 1 a
lower priority).
Single to RAID-N is possible, but involves a good bit of magic with
leaving room for superblocks, etc.
4. Uneven disk sizes, eg adding a 400GB disk to a 2x200GB mirror to
create a 400GB mirror. Together with 2 and 3, allows me to continuously
expand a disk array.
???
--
bill davidsen <davidsen@xxxxxxx>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
-
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
