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Re: counting scsi hosts

Jim Crilly wrote:

Reloading a SCSI host driver (i.e. gdth, aic7xxx, etc) will increase the
counter, reloading the SCSI core itself (scsi_mod) will reset the counter
back to zero.

There's no such module; I think SCSI support is compiled into the kernel.

I would also have compiled the gdth support in, but unfortunately it was only possible to compile it as a module. That in turn required to use an initrd.image :(

Are you sure you're using gdth for your root? I thought it was just for
SCSI controllers, I didn't know any SATA controllers used chipsets
supported by that driver.

Yes, the Vortex is an SATA RAID controller and needs the gdth module:

0000:02:02.0 SCSI storage controller: Adaptec ASC-29320A U320 (rev 10)
0000:03:01.0 RAID bus controller: ICP Vortex Computersysteme GmbH GDT NEWRX

There are no other disks than those attached to the RAID controller in the server. The only device on the Adaptec is a tape changer.

I can recommend the Vortex controller, no problems with it in about two years. It's running a RAID5, 1TB on 4 disks plus one spare.

If a disk fails, it will beep, so you _will_ notice. You replace the disk and that's all. --- I've had a disk failing in another server that also has a Vortex after about 3 months. It beeped and kicked in the spare; the replaced disk is now the spare, so it gets away with only one rebuild.

3wares are a little cheaper and work also (no problems except for a disk starting to fail in about 3 years, running RAID1 with two IDE disks), but they don't have a beeper.

A beeper is definitely worthwhile.


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