Re: Rebuilding a Raid 1

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Hi Heinz,
  Seeing as all the major distro's use this for detecting RAID during install from live CD, and right now they all fail, then you might suggest to them that this project is dead and you no longer support. Quite why they started using this for RAID, I am not sure. It did work, then got broken. Maybe they still think it works? It does not. 

Please ask the major distro's to start using mdadm instead of this broken thing they are still using.


Regards
David


On Mon, May 13, 2013 at 4:59 PM, Heinz Mauelshagen <heinzm@xxxxxxxxxx> wrote:

Have you tried mdadm? isw should be driven via md by now.

Heinz


On 04/25/2013 06:55 AM, Dead Gardens wrote:
dmraid version

# dmraid -V
dmraid version:         1.0.0.rc13-64 (2010.11.04) debug
dmraid library version: 1.0.0.rc13-17 (2009.06.10)
device-mapper version:  4.11.5


From: dead_gardens_@xxxxxxxxxxx
To: ataraid-list@xxxxxxxxxx
Subject: Rebuilding a Raid 1
Date: Thu, 25 Apr 2013 06:52:01 +0200

I'm trying to rebuild a raid 1 (dmraid+isw) unsuccessfully. I replaced the failed disk with a new one and the BIOS added it automatically to the raid. Running kernel 2.6.18-194.17.4.el5.


# dmraid -r


/dev/sda: isw, "isw_babcjifefe", GROUP, ok, 1953525165 sectors, data@ 0
/dev/sdb: isw, "isw_babcjifefe", GROUP, ok, 1953525165 sectors, data@ 0


# dmraid -s
*** Group superset isw_babcjifefe
--> Subset
name   : isw_babcjifefe_Raid0
size   : 1953519616
stride : 128
type   : mirror
status : nosync
subsets: 0
devs   : 2
spares : 0
When i try to start the raid i receive the next errors
# dmraid -f isw -S -M /dev/sdb
ERROR: isw: SPARE disk must use all space on the disk
# dmraid -tay
isw_babcjifefe_Raid0: 0 1953519616 mirror core 3 131072 sync block_on_error 2 /dev/sda 0 /dev/sdb 0
# dmraid -ay
RAID set "isw_babcjifefe_Raid0" was not activated
ERROR: device "isw_babcjifefe_Raid0" could not be found
# dmraid -f isw -S -M /dev/sdb
ERROR: isw: SPARE disk must use all space on the disk
# dmraid -R isw_babcjifefe_Raid0 /dev/sdb
ERROR: disk /dev/sdb cannot be used to rebuilding
# dmesg
device-mapper: table: 253:13: mirror: Device lookup failure
device-mapper: ioctl: error adding target to table
device-mapper: ioctl: device doesn't appear to be in the dev hash table.
device-mapper: table: 253:13: mirror: Device lookup failure
device-mapper: ioctl: error adding target to table
device-mapper: ioctl: device doesn't appear to be in the dev hash table.
device-mapper: table: 253:13: mirror: Device lookup failure
device-mapper: ioctl: error adding target to table
device-mapper: ioctl: device doesn't appear to be in the dev hash table.
device-mapper: ioctl: device doesn't appear to be in the dev hash table.
device-mapper: ioctl: device doesn't appear to be in the dev hash table.
Disks:
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
LVM:
PV /dev/sda5   VG storage   lvm2 [914.64 GB / 28.64 GB free]
Total: 1 [914.64 GB] / in use: 1 [914.64 GB] / in no VG: 0 [0   ]
Reading all physical volumes.  This may take a while...
Found volume group "storage" using metadata type lvm2
ACTIVE            '/dev/storage/home' [68.00 GB] inherit
ACTIVE            '/dev/storage/home2' [68.00 GB] inherit
ACTIVE            '/dev/storage/home3' [68.00 GB] inherit
ACTIVE            '/dev/storage/home4' [68.00 GB] inherit
ACTIVE            '/dev/storage/home5' [68.00 GB] inherit
ACTIVE            '/dev/storage/var' [15.00 GB] inherit
ACTIVE            '/dev/storage/mysql' [20.00 GB] inherit
ACTIVE            '/dev/storage/pgsql' [7.00 GB] inherit
ACTIVE            '/dev/storage/exim' [12.00 GB] inherit
ACTIVE            '/dev/storage/apache' [25.00 GB] inherit
ACTIVE            '/dev/storage/tmp' [2.00 GB] inherit
ACTIVE            '/dev/storage/backup' [450.00 GB] inherit
ACTIVE            '/dev/storage/log' [15.00 GB] inherit

Any idea of what is wrong?
Thanks! 

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