blackhole ~ # mdadm --monitor /dev/md0
mdadm: only give one device per ARRAY line: /dev/md0 and /dev/sdb1
mdadm: only give one device per ARRAY line: /dev/md0 and /dev/sdc1
mdadm: only give one device per ARRAY line: /dev/md0 and /dev/sdd1
Sep 26 20:17:36: SparesMissing on /dev/md0 unknown device