I created md0, 1, and 2 RAID1 arrays with mdadm, containing partitions
from missing and sdb. Then I changed my mind, but mdadm seems to be
trying to put them together anyway, and I can't figure out where it's
getting the info.
I purged mdadm, deleted /etc/mdadm, grep -r'ed /etc and /boot for md0
(didn't fine any), find'ed /etc for "*md*" (nothing), zeroed the first
10000 bytes of sdb, and rebooted. fdisk -l says there's no md*.
But when I apt-get install mdadm, it tries to create all 3 -- it claims
to succeed with md0:
Starting MD monitoring service: mdadm --monitor.
Assembling MD array md0...done (degraded [1/2]).
sbox:/usr/local# ls /dev/md*
/dev/md0 /dev/md1 /dev/md2
sbox:/usr/local# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sdb
625131776 blocks [2/1] [U_]
unused devices: <none>
I'm sure it's going to be obvious in retrospect, but what's the
--nuke_from_orbit switch for mdadm?