On Tue, 20 Jul 1999, Jens Schleusener wrote:
> Hi,
>
> sorry that I bother the experts. I am very new in the RAID business and
> tried to setup a large filesysten with three disks (2*18 GB + 1*9 GB SCSI,
> Adaptec 2940 AU) by using RAID linear. I used a fresh SuSE 6.1
> distribution (kernel 2.2.5) but built a new 2.2.10 kernel patched with
> raid0145-19990713-2.2.10 and aic7xxx-5.1.19-2.2.10.patch.
>
> I followed the instructions in the Software-RAID HOWTO (Feb. 99)
> but using the following /etc/raidtab
>
> raiddev /dev/md0
> raid-level linear
> nr-raid-disks 3
> persistent-superblock 1
> device /dev/sdc1
> raid-disk 0
> device /dev/sdd1
> raid-disk 1
> device /dev/sde1
> raid-disk 2
>
> I got the following error while initializing the array
>
> # mkraid /dev/md0
> handling MD device /dev/md0
> analyzing super-block
> disk 0: /dev/sdc1, 17920476kB, raid superblock at 17920384kB
> disk 1: /dev/sdd1, 17920476kB, raid superblock at 17920384kB
> disk 2: /dev/sde1, 8924076kB, raid superblock at 8923968kB
> /dev/md0: Invalid argument
The solution seems to set "chunk-size" in /etc/raidtab also for RAID
linear (NOT mentioned in the Software-RAID HOWTO). I added the line
chunk-size 4
No idea if that value is really used and - if yes - what a good value is
(I choosed a small value for good disk-space utilization).
Jens
--
Dr. Jens Schleusener debis Systemhaus
phone: +49 (551) 709-2493 Solutions for Research
fax: +49 (551) 709-2169 Bunsenstr.10
mail: [EMAIL PROTECTED] D-37073 Goettingen
