Re: Too many disks in system? (RAID5)

From: Bill Davidsen
Date: Tue Nov 29 2005 - 15:26:57 EST


Lennart Sorensen wrote:
On Mon, Nov 28, 2005 at 11:25:58PM +0100, Lukas Hejtmanek wrote:

Hello,

I have system with attached SATA array which contains 24 disks. I wanted to run
software RAID 5, but 24 disks means, that I would need /dev/sda to /dev/sdx
devices with major 8 and last minor 384. Minor seems to be limited to 8 bits.
Is there any chance to run software array using all 24 disks?

My test was with mknod v. 5.2.1 and kernel 2.6.14.3


Major 8 is not the only scsi major. Look at devices.txt in the kernel
Documentation dir. MAKEDEV also usually knows how to make more scsi
devices. For example major 65. Just use MAKEDEV /dev/sdx and see what
it creates.

Does udev not know how to handle this?
--
-bill davidsen (davidsen@xxxxxxx)
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me

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