RAID-5 making big partition fails (fwd)
Gaspar Bakos
gbakos at cfa.harvard.edu
Tue Sep 19 20:41:06 UTC 2006
---------- Forwarded message ----------
Date: Tue, 19 Sep 2006 16:39:31 -0400 (EDT)
From: Gaspar Bakos <gbakos at cfa.harvard.edu>
To: linux-raid at vger.kernel.org
Subject: RAID-5 making big partition fails
Hi,
I have a 12 disk RAID-5 hardware RAID with an ARECA card.
This is under FC5, 2.6.17.6 kernel. The areca driver correcly reports
5Tb diskspace on this unit, shown as /dev/sdc:
# fdisk /dev/sdc
Disk /dev/sdc: 4999.9 GB, 4999998341120 bytes
255 heads, 63 sectors/track, 607881 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
-------
However, when I am trying to create one big partition with 5Tb size:
First cylinder (1-73183, default 1): 1
Last cylinder or +size or +sizeM or +sizeK (1-73183, default 73183):
It does allow me ONLY to create a 560Gb partition.
Anyone knows the reason?
I also tried 'gparted', but the same problem.
I see the following logs in dmesg in the meantime:
sdc : very big device. try to use READ CAPACITY(16).
My kernel config is at:
http://www.cfa.harvard.edu/~gbakos/cf7/config
Help appreciated.
Cheers,
Gaspar
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