GNOME Bugzilla – Bug 635116
RAID5 array not recognized/single disks shown instead
Last modified: 2012-01-19 17:23:55 UTC
Hi, I've tried using the liveCD to format a RAID5 array using gparted, which has failed, as gparted shows the 4 hard drives that are part of the array instead of showing the array as a unit. Also, it claims these drives being used at different percentages (the partition that exists is shown in different sizes on the drives), even though there is ATM only 1 singe 100GB partition on the array (the rest is initialized, but unpartitioned space). Technical data: * HDDs controlled by Intel ICH10R * RAID5 with 4 * 1TB ~ 2,7TB of storage space * Existing partitions: 1 (~100GB, NTFS, formatted using WinXP Pro x64) Note that I have registered with a disposable email, as I don't want my normal one to be indexed by spam bots. I can be contacted as OldDeath on the forums, where I've created an account for that purpose. PS.: My second RAID array (2 disks, each 250GB, RAID1, controlled by JBB322 chip) is recognized as a single disk, as it should.
What is the output when you run the following command from the Live CD? sudo dmraid -sa -c
The output is composed of 4 error messages: ERROR: isw: wrong number of devices set RAID set "isw_dejidfhijd_Data" [1/2] on /dev/sdd ERROR: isw: wrong number of devices set RAID set "isw_djejabdddg_Data" [3/4] on /dev/sda ERROR: isw: wrong number of devices set RAID set "isw_djejabdddg_Data" [3/4] on /dev/sdb ERROR: isw: wrong number of devices set RAID set "isw_djejabdddg_Data" [3/4] on /dev/sdc I suppose this means there is a problem with the RAID setup (most probably as 2 of the disks were previously in a RAID1 array). Any idea how to fix it?
Something does appear to be amiss. You might read the following article to see if it sheds any light on the problem: http://techie.org/Blog/2010/09/03/how-to-rebuild-intel-raid-isw-on-linux/ You might also try searching the internet with the phrase: ERROR: isw: wrong number of devices set RAID
Well, no, it doesn't. The author has a problem that seems similar AFTER he took one of the drives out of his array. My array works perfectly (in fact I am using it in this very moment and the Intel tool I have opened just now tells me that the array is of perfect health and protected from the failure of one of the drives). Any idea where I could get help on the matter?
You might try describing the problem on the dmraid mailing list: https://www.redhat.com/mailman/listinfo/ataraid-list If the problem is with the GParted Live image, you might also try the System Rescue CD which also contains the GParted application: http://www.sysresccd.org/Main_Page
Your raid array appears to be broken because sdd claims to be part of a different array than the other drives. At any rate, this should be closed as NOTABUG because it isn't a gparted problem.
Since the RAID appears to be broken, I am closing this report as NOTABUG because GParted does not fix RAID. Other tools are needed to fix RAID.