after a reboot my
/dev/md0 device was missing. This is a RAID-1 array from two partitions of two harddrives. On each of the harddrives is another partition, which together belong to
dev/md1. However, only
dev/md0 was missing.
cat /proc/mdstat and
mdadm --detail --scan revealed both only one array (md1). But
mdadm -Es showed up both arrays:
ARRAY /dev/md0 level=raid1 num-devices=2 UUID=xx ARRAY /dev/md1 level=raid1 num-devices=2 UUID=xx
Has anyone an idea why
/dev/md0 is not mapped and not identified correctly?