With the following configuration, any attempt to access /dev/md1 will
lock the process in D (disk sleep) state:
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
persistent-superblock 1
chunk-size 64
device /dev/hda5
raid-disk 0
device /dev/hda6
raid-disk 1
raiddev /dev/md1
raid-level linear
nr-raid-disks 2
chunk-size 4
persistent-superblock 0
device /dev/md0
raid-disk 0
device /dev/hda7
raid-disk 1
On the other hand, the following configuration works just fine:
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
persistent-superblock 1
chunk-size 64
device /dev/hda5
raid-disk 0
device /dev/hda6
raid-disk 1
raiddev /dev/md1
raid-level linear
nr-raid-disks 2
chunk-size 4
persistent-superblock 0
device /dev/hda8
raid-disk 0
device /dev/hda7
raid-disk 1
