Message-ID: <001201c1c1e3$cf56e540$a3824c93@neca.nec.com.au> From: "michael hilton" <mhilton@ico.nec.com.au> Date: Sat, 2 Mar 2002 23:14:31 +1100 Subject: RE: [suse-sparc] RAID troubles
I have also experienced the same sort of problem with a software raid 5 config on an Ultra 5 with a Symbios controller. The raidtab config is as follows:
raiddev /dev/md0
raid-level 5
nr-raid-disks 7
nr-spare-disks 0
persistent-superblock 1
parity-algorithm left-symmetric
chunk-size 128
device /dev/sda1
raid-disk 0
device /dev/sdb1
raid-disk 1
device /dev/sdc1
raid-disk 2
device /dev/sdd1
raid-disk 3
device /dev/sde1
raid-disk 4
device /dev/sdf1
raid-disk 5
device /dev/sdg1
raid-disk 6
The raid device was formatted as ext2.
I have also tried a raid 0 (stripe) but without any problems.
I have found it was possible to bring the raid device back up by repartitioning the "lost" drives exactly as they were before.
Cheers,
Mike Hilton
-----Original Message-----
From: Brian Hazlehurst [mailto:brian@dcog.net]
Sent: Saturday, 2 March 2002 1:08 PM
To: suse-sparc@suse.com
Subject: [suse-sparc] RAID troubles
Hi list,
I make the raid device (mkraid, with a raidtab that specifies raid 5
for 8 distinct drives, including one "spare").
I create a file system (I've tried ext2 and reiser file systems).
I reboot (sometimes, I've mounted the block device and successfully
written to it first).
Each time, on the reboot, the partition tables on most of the disks get
"lost" (usually, the first and last disk seem to retain their partition
tables), and the device is unusable.
I'm not sure what's going on. Any suggestions? I'm running 7.3 and the
raid is an array on a single scsi controller.
-Brian
brian@dcog.net
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