Hi,
I've tried to build a RAID0 system in the last days. But there is a
problem that I don't understand.
These are the information about the system:
- PII/400
- 128 MB Ram
- 4.3 GB IDE for system/user etc
- 2 x 9.1 GB UW-SCSI to build an 18GB file server with RAID0
(/dev/sdb1 and /dev/sdc1)
- SuSE 6.1, kernel 2.2.4 patched to 2.2.6,
raidtools-19990421-0.90.tar.gz
And these are the steps I've done already:
- install 2.2.4 kernel source
- download the patches and patch the source tree to 2.2.6
- download and patch the source tree with raid0145-19990421-2.2.6.gz
- configure, compile and install the kernel with activated RAID0 and
autodetection support
- set the ID of /dev/sdb1 and /dev/sdc1 to 0xFD
- configure /etc/raidtab for RAID0
- reboot the new kernel - the partitions are detected
- mkraid /dev/md0
- mke2fs /dev/md0
- mount -text2 /dev/md0 /data
- reboot - the partitions are detected and the raid system is started
(cat /proc/mdstats)
- mount -text2 /dev/md0 /data -> "wrong fstype.."
/etc/raidtab:
raiddev /dev/md0
raid-level 0
nr-raid-disks 2
persistent-superblock 1
chunk-size 4
device /dev/sdb1
raid-disk 0
device /dev/sdc1
raid-disk 1
BTW: The same procedure works fine with a 2x20MB RAID0 on my test box.
So I've changed /dev/sdb1 and /dev/sdc1 to 20 MB - and this works too.
After a lot of tries I've figured out that problem is around 2 x 400 MB.
Partitions greater than this values (and 9.1 GB is greater than 400 MB
:-) doesn't work - but WHY?
Is there a limit for RAID systems? Can anybody help me?
Thanks a lot,
Lars
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______________________________________________________________________
Lars Martin mailto:[EMAIL PROTECTED]
softwarebuero m&b http://www.softwarebuero.de
