I'm trying to get dmraid to properly detect an existing RAID 10 array, which is working fine within windows 7. In summary, the drive setup and bios partitioning is as following:
2 x SSD (120 GB), RAID 0.
Partitioned into:
180 GB (win7)and58 GB (Ubuntu).Both detected and mounting fine in Ubuntu.
4 x HDD (2 TB), RAID 1+0. Single 4TB partition.
Not working in ubuntu.
The Ubuntu installation itself is on a partitioned striped disk pair, and works fine. The two partitions (180 GB and 58 GB) correspond to the following LVM's (I've taken the liberty to format the data for readability):
#$ sudo dmsetup info /dev/dm-{1,2,3,4,5}
|----------+--------+---------------+-----------+----------+--------|
| dev/dm-0 | ubuntu | pdc_hjijcjji | container | | 58 GB |
| dev/dm-1 | ubuntu | pdc_hjijcjji1 | / | ext4 | 54 GB |
| dev/dm-2 | ubuntu | pdc_hjijcjji2 | | extended | 4.3 GB |
| dev/dm-3 | win 7 | pdc_fjhhdeeg | container | | 180 GB |
| dev/dm-4 | ubuntu | pdc_hjijcjji5 | | swap | 4.3 GB |
| dev/dm-5 | win 7 | pdc_fjhhdeeg1 | | ntfs | 180 GB |
|----------+--------+---------------+-----------+----------+--------|
The Raid 10 array (which is the one I need help to get it working within Ubuntu) consists of four 2TB disks, and give a resulting 4TB array. It seems as if dmraid is aware of this array, given the following output:
#$ sudo dmraid -r |----------+--------+------------------+--------+---------+----------------+---------| | Device | Format | Name | Type | Status? | Size (sectors) | ? | |----------+--------+------------------+--------+---------+----------------+---------| | /dev/sdf | pdc | pdc_fjhhdeeg | stripe | ok | 175781248 | data@ 0 | | /dev/sde | pdc | pdc_fjhhdeeg | stripe | ok | 175781248 | data@ 0 | | /dev/sdd | pdc | pdc_bjibibahah-1 | stripe | ok | 1758766336 | data@ 0 | | /dev/sdc | pdc | pdc_bjibibahah-1 | stripe | ok | 1758766336 | data@ 0 | | /dev/sda | pdc | pdc_bjibibahah-0 | stripe | ok | 1758766336 | data@ 0 | | /dev/sdb | pdc | pdc_bjibibahah-0 | stripe | ok | 1758766336 | data@ 0 | |----------+--------+------------------+--------+---------+----------------+---------|
Which throws me off a bit, since I'd expect the array, pdc_hjijcjji, to show up here as well. Perhaps, since it's a partition within a striped disk, it is included within pdc_fjhhdeeg. In any case, the striped array is running fine, so I'm not too worried about it.
pdc_hjijcjji shows up when running dmraid -s:
#$ sudo dmraid -s |-----------+----------------+--------------+--------------| | Name | pdc_bjibibahah | pdc_fjhhdeeg | pdc_hjijcjji | |-----------+----------------+--------------+--------------| | | Superset | Active Set | Active Set | | Size (-h) | 1.677 TB | 167.6 GB | 54.0 GB | | Size | 3517532672 | 351562496 | 113281024 | | Stride | 128 | 128 | 128 | | Type | raid10 | stripe | stripe | | Status | ok | ok | ok | | Subsets | 2 | 0 | 0 | | Devs | 4 | 2 | 2 | | Spares | 0 | 0 | 0 | |-----------+----------------+--------------+--------------| # Size is in blocks of 512 bytes.
Where pdc_bjibibahah seems to correspond to the Raid10 array, except that it has a weird size (1.677 TB, as apposed to approx 4 TB). Trying to activate this using dmraid -ay results in a mounted 1.677 TB device with is reported as unallocated data.
Running sudo dmraid -s -si on the bjibibahah array:
#$ sudo dmraid -s -si |-----------+----------------+------------------+------------------| | Name | pdc_bjibibahah | pdc_bjibibahah-0 | pdc_bjibibahah-1 | |-----------+----------------+------------------+------------------| | | Superset | Subset | Subset | | Size (-h) | 1.638 TB | 1.638 TB | 1.638 TB | | Size | 3517532672 | 3517532672 | 3517532672 | | Stride | 128 | 128 | 128 | | Type | raid10 | stripe | stripe | | Status | ok | ok | ok | | Subsets | 2 | 0 | 0 | | Devs | 4 | 2 | 2 | | Spares | 0 | 0 | 0 | |-----------+----------------+------------------+------------------|
I've tried configuring the arrays manually, but with no success, and the man page isn't proving all too helpful either. If anyone has a suggestion as to how to configure dmraid, or to convince it to change the configuration of the RAID10 array, I would be really grateful.
Here are a few outputs, should it be relevant:
$ sudo dmraid -V dmraid version: 1.0.0.rc16 (2009.09.16) shared dmraid library version: 1.0.0.rc16 (2009.09.16) device-mapper version: 4.20.0 $ sudo dmsetup --version Library version: 1.02.48 (2010-05-20) Driver version: 4.20.0 $ uname -srvm Linux 3.0.0-16-generic #28-Ubuntu SMP Fri Jan 27 17:44:39 UTC 2012 x86_64 $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 11.10 Release: 11.10 Codename: oneiric
Also, the BIOS raid setup of the RAID10 array match the following disks within ubuntu: Code:
|---------+------------+--------------| | Port:ID | Assignment | OS Disk Name | |---------+------------+--------------| | 01:01 | LD 1-1 | /dev/sda | | 02:01 | LD 1-2 | /dev/sdb | | 03:01 | LD 1-3 | /dev/sdc | | 04:01 | LD 1-4 | /dev/sdd | |---------+------------+--------------|
Update: I forgot to mention that I'm on a Crosshair V motherboard, using the built in AMD SB950 controller.
Update 2: When running sudo dmraid -s -ccs pdc I get the following error messages:
ERROR: pdc: wrong # of devices in RAID set "pdc_fjhhdeeg" [1/2] on /dev/sdf ERROR: pdc: wrong # of devices in RAID set "pdc_fjhhdeeg" [1/2] on /dev/sde ERROR: pdc: wrong # of devices in RAID set "pdc_bjibibahah-1" [1/2] on /dev/sdd ERROR: pdc: wrong # of devices in RAID set "pdc_bjibibahah-1" [1/2] on /dev/sdc ERROR: pdc: wrong # of devices in RAID set "pdc_bjibibahah-0" [1/2] on /dev/sdb ERROR: pdc: wrong # of devices in RAID set "pdc_bjibibahah-0" [1/2] on /dev/sda *ERR*
If I omit the specifier pdc, and just write sudo dmraid -s -ccs I get the even more cryptic:
*ERR* *ERR* *ERR*
Update 3: I've managed to remove the badly configured array using sudo dmraid -rE as suggested in an askubuntu QA here. I'm still getting the "ERROR: pdc: wrong # of devices in RAID set ..." errors, which seem to be impeding further progress. I'll keep searching for solutions to this problem.
Edit: Is there any information I can add that would help anyone help me?