bin nun ein schritt weiter gekommen mit mdadm --create.
wenn ich jetzt mdadm --assemble mache kommt sowas raus:
CubeStation> mdadm --assemble --force -v /dev/md2 /dev/sda3 /dev/sdb3 /dev/sdc3 /dev/sdd3
mdadm: looking for devices for /dev/md2
mdadm: /dev/sda3 is identified as a member of /dev/md2, slot 0.
mdadm: /dev/sdb3 is identified as a member of /dev/md2, slot 1.
mdadm: /dev/sdc3 is identified as a member of /dev/md2, slot 2.
mdadm: /dev/sdd3 is identified as a member of /dev/md2, slot 4.
mdadm: added /dev/sdb3 to /dev/md2 as 1
mdadm: added /dev/sdc3 to /dev/md2 as 2
mdadm: no uptodate device for slot 3 of /dev/md2
mdadm: added /dev/sdd3 to /dev/md2 as 4
mdadm: added /dev/sda3 to /dev/md2 as 0
mdadm: /dev/md2 has been started with 3 drives (out of 4) and 1 spare.