I'm new to Linux and this discussion group so
please be patient.
I'm able to make a Software RAID1 system with a
mirrored pair plus one spare using standard
Redhat 6.0 (kernel 2.2.5). The hardware is just a
Pentium Motherboard with one IDE drive and a
string of three SCSI Hard Drives. Each SCSI drive
has only one partition. It is the three
SCSI drives that make up the mirrored pair
plus one spare. I want to use cron to bring-down
one of the drives in the mirrored pair every hour.
The reconstruction will then bring in the spare as
the new half of the mirrored pair. The idea (likely
bad) is that this makes sure I always have a good
filesystem no more than one hour old on the drive that
has been brought down? To make this work I need help
with following questions:
1) Once a spare has become part of the mirrored
pair (after reconstruction), how do I re-introduce
the third drive back as the new spare? Are there
console commands for this?
2) Other than powering off a drive in the mirrored
pair (I tried this), how can I bring it down so
that reconstruction starts on the spare?
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