I'm getting the following mail every day on a server:
This is an automatically generated mail message from mdadm running on <host> A SparesMissing event had been detected on md device /dev/md0. Faithfully yours, etc. P.S. The /proc/mdstat file currently contains the following: Personalities : [raid1] md0 : active raid1 sda1 sdb1 731592000 blocks [2/2] [UU] unused devices: <none>
The output from
cat /proc/mdstat looks fine though, so it's not obvious what is causing this problem.