11.10 dmraid does not see my disks

[Andrew Stone]

Innocently, I ran straight into the RAID issues with grub2. But I solved that by installing to an old 20GB drive. So now I have 11.10 running but not on the RAID disks. I'm not trying to mount them somewhere. However, dmraid is now not detecting my raid! But it is not corrupt, in grub-rescue I was able to ls (md0)/boot" and see stuff. Any ideas on what to do?

(the raid should be the 2 hitachi disks)

stone@pisco:~$ sudo lshw -C disk
*-disk:0
description: ATA Disk
product: Hitachi HDS72101
vendor: Hitachi
physical id: 0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: JP4O
serial: JP2921HQ0VH9SA
size: 931GiB (1TB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 signature=000396bb
*-disk:1
description: ATA Disk
product: WDC WD3200JS-22P
vendor: Western Digital
physical id: 1
bus info: scsi@1:0.0.0
logical name: /dev/sdb
version: 21.0
serial: WD-WCAPD3494863
size: 298GiB (320GB)
configuration: ansiversion=5
*-disk:2
description: ATA Disk
product: Hitachi HDS72101
vendor: Hitachi
physical id: 0.0.0
bus info: scsi@2:0.0.0
logical name: /dev/sdc
version: JP4O
serial: JP2921HQ0UUTEA
size: 931GiB (1TB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 signature=000a38a1
*-disk
description: ATA Disk
product: ST320414A
vendor: Seagate
physical id: 0
bus info: scsi@4:0.0.0
logical name: /dev/sdd
version: 3.05
serial: 7EC05TRD
size: 18GiB (20GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 signature=0000e60f
*-cdrom
description: DVD-RAM writer
product: CDDVDW SH-S223L
vendor: TSSTcorp
physical id: 1
bus info: scsi@5:0.0.0
logical name: /dev/cdrom
logical name: /dev/cdrw
logical name: /dev/dvd
logical name: /dev/dvdrw
logical name: /dev/scd0
logical name: /dev/sr0
version: SB02
capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
configuration: ansiversion=5 status=nodisc

stone@pisco:~$ dmraid -r
no raid disks


Thanks!

[darkod]

1. What issues with grub2 and raid? Did you use the alternate install cd as recommended?

2. I believe you need to use the sudo command in front of dmraid. Try:
sudo dmraid -r

3. If you installed from the desktop cd the package dmraid is not installed by default. You need to install it with:
sudo apt-get install dmraid

On top of all the above, I'm not sure if you need to activate a fakeraid array first. During the install with the alternate cd when it detects the fakeraid it asks you if you want to activate it. If you simply installed the desktop cd on the 20GB disk, it has no idea about the fakeraid and probably didn't activate anything.

Depending what the commands above return as result, you might need to look into whether an activation of the fakeraid array is needed when it's not done during the install.