Re: Linux-2.6.13-rc6: aic7xxx testers please..

James Bottomley
2005-08-10T00:50:22Z

On Tue, 2005-08-09 at 16:12 -0400, John Stoffel wrote:
> Thank you for looking into this with me, I really appreciate it. I'm
> kinda stumped why this suddenly started happening, but it could be
> hardware related of course...

Well ... there's something going on that your posted dmesg's don't seem
to cover. This:

> Vendor: SUN Model: DLT7000 Rev: 1E48
> Type: Sequential-Access ANSI SCSI revision: 02
> target1:0:6: asynchronous.
> target1:0:6: Beginning Domain Validation
> target1:0:6: wide asynchronous.
> target1:0:6: Domain Validation skipping write tests
> target1:0:6: FAST-10 WIDE SCSI 20.0 MB/s ST (100 ns, offset 8)
> target1:0:6: Ending Domain Validation

Say everything went OK with DV and the drive attaches wide and at 10MHz.

But in your previous posting, the aic proc routines said this:

> Target 6 Negotiation Settings
> User: 40.000MB/s transfers (20.000MHz, offset 127, 16bit)
> Goal: 20.000MB/s transfers (10.000MHz, offset 8, 16bit)
> Curr: 3.300MB/s transfers
> Channel A Target 6 Lun 0 Settings
> Commands Queued 1065
> Commands Active 0
> Command Openings 1
> Max Tagged Openings 0
> Device Queue Frozen Count 0

Which is the AIC driver's way of saying narrow async.

So something must have happened during the 1065 I/Os to cause this.
Hopefully that something left a trace in the logs.

James