Re: Apple Xserve RAID and qlogic ISP2312 (qla2300)

[Patrick Mansfield <patmans@us.ibm.com>]

On Thu, Oct 28, 2004 at 06:35:22PM +0300, Catalin Muresan wrote:

Ok, that should have been lun 5.

>  > > Oct 28 01:59:37 zerg-b kernel: scsi_scan_host_selected: <0:4294967295:4294967295:4294967295>
>  > > Oct 28 01:59:37 zerg-b kernel: scsi scan: INQUIRY to host 0 channel 0 id 0 lun 0
>  > > Oct 28 01:59:37 zerg-b kernel: scsi scan: 1st INQUIRY failed with code 0x10000
>  > 
>  > The 0x10000 is a DID_NO_CONNECT, generally the adapter can't talk to
>  > the target at all.
> 
> 	I don't know what the SCSI spec has to say about this, but by
> looking at the code it should respond with SCSI_SCAN_TARGET_PRESENT.

Hmmm ... my interpretation of DID_NO_CONNECT was that the adapter cannot
talk to the target at all.

You should be able to send an INQUIRY to any LUN on a target, the HBA
really shouldn't block it.

Given that, it is correct for the scan to give SCSI_SCAN_TARGET_PRESENT
on a DID_NO_CONNECT.

So, it looks like the qlogic is giving a DID_NO_CONNECT when it should
not. We could hack around this in scsi_scan.c but that might be bad.

James or Andrew what do you think?

Catalin - does the device support REPORT LUNS? Do you have that
configured? It would avoid this problem.

> 	my goal is to have a kernel with which I can boot from FC, but i see
> that can be done only with an ugly patch(for now) or with tricks from
> initrd.

What tricks and ugly patch? I haven't tried boot via qlogic on an HS20.

-- Patrick Mansfield