I have 4 x 6TB hard drives which has been setup for RAID 10 in the BIOS (option rom: Intel RST (v12.7.0.1936)) on my P6T7 WS ASUS Motherboard with modded bios (BIOS) which works :
lrwxrwxrwx 1 root root 3 Jul 29 00:06 /dev/raidDevice1 -> sda
lrwxrwxrwx 1 root root 3 Jul 29 00:06 /dev/raidDevice2 -> sdb
lrwxrwxrwx 1 root root 3 Jul 29 00:06 /dev/raidDevice3 -> sdc
lrwxrwxrwx 1 root root 3 Jul 29 00:06 /dev/raidDevice4 -> sdj
When I start Ubuntu 14.04 -> (mdadm is installed) then i get some kind of device mapper devices (dm0/dm1/dm2)? What are those? Are these already my raid? But it should be only one device and exactly 12TB big (Raid 10, 4 Hds 6TB = 12TB)?
lsblk gives:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 5.5T 0 disk
└─isw_biajiifeeg_vol0-1 (dm-0) 252:0 0 1.5T 0 dmraidi
└─isw_biajiifeeg_vol0 (dm-2) 252:2 0 2.9T 0 dmraid
sdb 8:16 0 5.5T 0 disk
└─isw_biajiifeeg_vol0-0 (dm-1) 252:1 0 1.5T 0 dmraidi
└─isw_biajiifeeg_vol0 (dm-2) 252:2 0 2.9T 0 dmraid
sdc 8:32 0 5.5T 0 disk
└─isw_biajiifeeg_vol0-0 (dm-1) 252:1 0 1.5T 0 dmraidi
└─isw_biajiifeeg_vol0 (dm-2) 252:2 0 2.9T 0 dmraid
sdj 8:144 0 5.5T 0 disk
└─isw_biajiifeeg_vol0-1 (dm-0) 252:0 0 1.5T 0 dmraidi
└─isw_biajiifeeg_vol0 (dm-2) 252:2 0 2.9T 0 dmraid
The disk utility shows the following:
I dont know what to do now to use this raid 10 configuration? Should I still doo the following setup as described in (page: 9 in INTEL PDF MANUAL) which is:
mdadm -C /dev/md/imsm /dev/sda /dev/sdb /dev/sdc /dev/sdj -n 4 -e imsm
mdadm -C /dev/md/vol0 /dev/md/imsm –n 3 –l 10
Does somebody know what to do know or do differently?
I actually wanted to delete the funny devices /dev/dm* mdadm --remove /dev/dm0
