Sounds like your label is being overwritten. Be sure that you do not use
cylinder 0 in your partition. Start it on cyl 1.
Here is an excerpt from the "fdisk" man page on our Sparc running Aurora
Linux:
A BSD/SUN type disklabel can describe 8 partitions, the
third of which should be a `whole disk' partition. Do not
start a partition that actually uses its first sector
(like a swap partition) at cylinder 0, since that will
destroy the disklabel.
--Cal Webster
> -----Original Message-----
> From: linux-raid-owner@vger.kernel.org
> [mailto:linux-raid-owner@vger.kernel.org]On Behalf Of Rick Altherr
> Sent: Monday, August 19, 2002 10:39 AM
> To: linux-raid@vger.kernel.org
> Subject: RAID5 problems
>
>
> I am brand new to software RAID on linux so please bear with me.
>
> I have (4) 23GB SCSI drives on an Adaptec 2940UW controller in an
> alphastation 600. I created BSD disklabels on all the drives and
> partitioned them as one partition per drive. I made a raidtab containing
> all 4 partitions as members of a single RAID5 array. I ran mkraid
> /dev/md0 and the raid array was created and functioned.
>
> This is where the problem lies. If I stop the RAID array using raidstop
> /dev/md0 and run fdisk on each drive, it reports that each drive has a BSD
> disklabel with a single partition. However, if I format the RAID array
> using mke2fs -b 4096 -R stride=8, stop the array with raidstop, and check
> each drive with fdisk, the disklabel is removed on the second and third
> drives only. The first and fourth are fine though.
>
> Trying to start the array again with raidstart fails and mkraid will not
> recreate the array until I create disklabels on the second and third
> drives.
>
> I have not tried any other filesystems as ext2 is the only one my kernel
> currently supports.
>
> Any ideas?
> --
> Rick Altherr
> KC8APF
> kc8apf@kc8apf.net
>
>
>
>
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