> How do I re-sync these RAID devices?
You have to add the partitions on sdb (if this is your 2nd SCSI disk) to the
arrays again.
1. Do 'raidstop /dev/md0' .. 'raidstop /dev/md8'.
2. Change types of the sdb's partitions to 83 (if they have type fd) -- this
will exclude them from autodetection on boot.
2. Reboot (the status will be still the same, degraded mode, but you will be
able to add them 'raid hot' in next step).
3. Do 'raidhotadd /dev/md0 /dev/sdb1' .. 'raidhotadd /dev/md8 /dev/sdb8'.
4. Eventually wait until the resync finishes.
5. 'Raidstop' them all again.
6. Change the partitions' types back to fd.
7. Reboot. It should be completed.
> Is it necessary to have a 'spare disk' to be able to recovery my array?
> (ie, a partition on the IDE drive could be the spare disk..)
Absolutely not.
> There is documentation on How-to-Setup a RAID, but I can't find much
> on one of the more important aspects, how to recover. :) Any URLs I'm
> missing?
I prepared something (but it's a bit rough, needs cleanup) - look there:
http://www.chance.cz/~egon/tinyr1rhowto.html
Egon
