Tried out software RAID in Fedora Core 5 the other day. RAID 1 with two identical 80GB drives. And when I mean tried out, I mean I unplugged the power cable from one of the drives while using the system. My coworker Chuck didn’t seem convinced that software RAID was acutally working unless this stunt was performed.
Madness, you say? True, true. Not something one should try at home. Not even silly old me. Luckily, it worked! I cut power to the second drive in the array during a full system upgrade. After a ton of IDE errors, the RAID subsystem eventually removed the faulty drive from the array. The upgrade proceeded without so much as a hiccup. Full recovery worked flawlessly after I powered off, plugged the drive back in, rebooted, and manually issued the command “mdadm /dev/md0 -a /dev/hdb1″.