Recover Failed RAID1 w/ MDADM

Preface

IF you are here, you are already in trouble. Make sure you understand the situation before you move forward.

1) Was there a hardware failure? If it was one of the drives in a RAID1, you can likely recover. 2) Was it a software or configuration failure? This can be recovered, bu tmake sure you do it in the right order.

In any event, make sure you read carefully, and understand what the failure is.

I also wrote this primalially for myself. Your mileage may vary.