Adaptec AHD U320 operating as only U160

JoaoBR joao at
Mon Feb 11 22:16:11 UTC 2008

On Monday 11 February 2008 19:51:10 Scott Long wrote:
> >>
> >>
> >> Do you still have your U320 disks running as U160 disks with an Adaptec
> >> U320 controller in 7.0 or 8-CURRENT?  I also have this problem and I've
> >> traced it down to the CAM "NEW TRAN" code.
> Guys,
> I hate to say it, but SCSI speed negotiation broke with 7.0.  I don't
> have a quick fix, and I don't know of a workaround other than to tell
> you to read the camcontrol manpage section on the 'negotiate' command
> and play with that.  I'm working on fixing the problem, but it won't be
> fixed in time for the final 7.0 release.  I'll post updates when I have
> more information.

you said this some time ago but I was hoping you could make it for 7-R

unfortunately there is nothing to do here with camcontrol ...

it can be set on some adaptors with -U the syncrate but this seems not to 
affect the actual settings and specially the negotiation speed

where I had a adaptec card I could put a LSI card in where the correct speed 
is shown

mpt0: <LSILogic 1030 Ultra4 Adapter> port 0xdc00-0xdcff mem 
0xfd7c0000-0xfd7dffff,0xfd7a0000-0xfd7bffff irq 16 at device 4.0 on pci1

da0: <SEAGATE ST373207LW 0003> Fixed Direct Access SCSI-3 device
da0: 320.000MB/s transfers (160.000MHz, offset 63, 16bit)

but unfortunately again all my Tyans and SM with onboard adaptec are running 
on slow speed (160)

ahd0: <Adaptec AIC7902 Ultra320 SCSI adapter> port 0xa800-0xa8ff,0xa400-0xa4ff 
mem 0xfc9fe000-0xfc9fffff irq 24 at device 3.0 on pci2

da1: <SEAGATE ST373455LW 0003> Fixed Direct Access SCSI-3 device
da1: 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)

so then it is not exactly a scsi but an adaptec problem right?



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