I created on a new installation 2 raid devices, the first one for / and a second one for swap.
md0 (hda2, hdb2) mounted on / md1 (hda1, hdb1) for swap
Everything went ok, until I simulated a disk failure. I turned the PC off and took the power from one of the devices. Then booted with only one disk and the system started.
I then switched off again and plugged the device again.
The problem is now that after starting the system again recovery doesn't start!
Distribution is SuSE 8.2. Kernel is SuSE's k_deflt-2.4.21-64.
I tried with the mdadm 1.1 from the distro without success.
I read many mails from this mailing list and tried also Neil Brown's tips using "--update=summaries" after installing mdadm-1.3 + all 4 patches from http://cgi.cse.unsw.edu.au/~neilb/source/mdadm/patch/applied/
Also everything without success.
I recreated the swap partition again, since there is no data to save or backup. So now md1 is running fine again.
But I can't get md0 to recover!
/proc/mdstat and mdadm --examine show that /dev/hdb2 is active, so I tried setting /dev/hda2 to faulty, remove it and add it back again, but no recovery was started.
Here the output from "mdadm --detail /dev/md0":
liv:~/mdadm-1.3.0 # ./mdadm --detail /dev/md0 /dev/md0: Version : 00.90.00 Creation Time : Sat Sep 6 11:53:59 2003 Raid Level : multipath Array Size : 77087808 (73.52 GiB 78.94 GB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 0 Persistence : Superblock is persistent
Update Time : Tue Sep 9 18:43:30 2003
State : dirty, no-errors
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
Number Major Minor RaidDevice State 0 0 0 0 faulty removed 1 3 66 1 active sync /dev/hdb2 2 3 2 2 spare /dev/hda2
Why does it show "Raid Level : multipath" ???
I didn't configure it as such!
/dev/hda2 shows also "Raid Level : multipath" !!!
/dev/hdb2, the active one, shows the correct "Raid Level : raid1".
And why is /dev/hda2 showed as a spare device where it should become an active device?
liv:~/mdadm-1.3.0 # ./mdadm --examine /dev/hda2 /dev/hda2: Magic : a92b4efc Version : 00.90.00 UUID : a6682b0a:a73c6dd5:25ac81ea:19eb7783 Creation Time : Sat Sep 6 11:53:59 2003 Raid Level : multipath Device Size : 77087808 (73.52 GiB 78.94 GB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 0
Update Time : Sat Sep 6 16:14:01 2003
State : clean, no-errors
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
Checksum : b9b3d127 - correct
Events : 0.19
Number Major Minor RaidDevice State this 0 3 2 0 active sync /dev/hda2 0 0 3 2 0 active sync /dev/hda2 1 1 0 0 1 faulty removed 2 2 3 66 2 spare /dev/hdb2
liv:~/mdadm-1.3.0 # ./mdadm --examine /dev/hdb2 /dev/hdb2: Magic : a92b4efc Version : 00.90.00 UUID : a6682b0a:a73c6dd5:25ac81ea:19eb7783 Creation Time : Sat Sep 6 11:53:59 2003 Raid Level : raid1 Device Size : 77087808 (73.52 GiB 78.94 GB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 0
Update Time : Tue Sep 9 15:46:04 2003
State : dirty, no-errors
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
Checksum : b9b7bef7 - correct
Events : 0.23
Number Major Minor RaidDevice State this 1 3 66 1 active sync /dev/hdb2 0 0 0 0 0 faulty removed 1 1 3 66 1 active sync /dev/hdb2
Any help would be VERY appreciated!
What are "Raid Devices"? The ones defined in /etc/raidtab? Why "Total Devices : 1"? Is this the same as "Working Devices"? Could devices be working but not active?
Many thanks, Richard
-- Richard Ems ... e-mail: r.ems@gmx.net ... Computer Science, University of Hamburg
"Do or do not. There is no try" - Yoda Yoda never programmed in Java.
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