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

[James Bottomley <James.Bottomley@SteelEye.com>]

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


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