[AuckLUG] Thanks, weather!

[Justin Cook]

We just had a brownout and as a result it appears one of the drives in 
my mirror array has died. Sort of. Here's what I mean:

[root at neko ~]# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 hda1[0]
      79007552 blocks [2/1] [U_]

md0 : active raid1 hdb2[1] hda2[0]
      1020032 blocks [2/2] [UU]


Damn. How does one work with mdadm? Is the best strategy just to bang a 
replaccement drive in there? Why would one partition fail, but not the 
second one? Should I remove the semi-functional drive immediately?

Anyway, the mirror did its job. Hooray!