Hi,

I created a RAID10 out of 2 RAID1 arrays on a SL4.2 system with SCSI disks:
   mdadm --create --force /dev/md11 --verbose  --level=raid1 --raid-devices=2 /dev/sdb1 /dev/sdi1
   mdadm --create --force /dev/md12 --verbose  --level=raid1 --raid-devices=2 /dev/sdc1 /dev/sdj1
   mdadm --create --force /dev/md10 --verbose --chunk=64 --level=raid0 --raid-devices=2 /dev/md11 /dev/md12
This RAID10 array is assembled and usable, but when I reboot the system, only the underlying RAID1 arrays are assembled, the RAID10 array is not.

Can anybody help me?

Best regards

Peter

        Dr. Peter Stauffert
        Boehringer Ingelheim Pharma GmbH & Co. KG