ESP SCSI and QLGC,ISP SCSI drivers not finding attached devices

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Hi All,

I have been having intermittant issues with the QLGC,isp driver (qlogicpti.c) not finding any attached devices on my sun4c. Having now moved on to Linux-2.6.22 this problem is now also affecting the ESP SCSI driver and is nolonger intermittant.

My test setup uses an NFS root so it is currently independent of the SCSI drivers/subsystem. I am hoping to change this in the near future so that my sun4c boots into linux by default.

What kernel options can I use to try to work out why the drivers are ignoring disks (there are no other types of attached device at present). Are any special options needed to force the scsi subsystem to spin the disk up and wait untill they become ready (The disk [target 0:0:3] on the ESP auto-spins down if it is idle for too long and now that booting takes longer ...) ?

Is there a way to get a NON-moduler scsi driver to re-scan its SCSI bus from shell prompt (writing to a sysfs/procfs file)?

From my point of view, it looks like the command timeout is very much too
short. Is there a simple way of testing this theory on the ESP driver?

Regards
	Mark Fortescue.
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