SCSI backup error

[Lefteris Tsintjelis]

Termination and termination power is OK in both buses. I strongly believe that 
it could be the firmware. It is an old and unmaintaned board with a build in 
SCSI bus so no chance for a firmware upgrade, checked that one already. I will 
probably switch it to another SCSI bus and see if that helps but in case of a 
firmware bug, that I strongly believe this is the case here, is there a 
workaround? I recall that Adaptec had a firmware bug in all controllers with 
earlier versions than 3.00.

Doug White wrote:
> 
> On Fri, 4 Jul 2003, Lefteris Tsintjelis wrote:
> 
> > The only line is the following one. There is no other relevant error message
> > besides that one. Could it be a hardware problem or simply a long device
> > time out that triggers the dump? It is an old DAT that I use. Strange though
> > that happened right after the upgrade.
> >
> > Jul  3 22:53:16 ene /kernel: (sa0:ahc2:0:6:0): SCB 0x5 - timed out
> 
> Yeah, your cabling or termination is off. Recheck and replace if
> necessary.  SCSI cables are fickle to say the least.
> 
> Upgrades with changes to the adaptec drivers tend to improve the timings
> and peformance at the expense of breaking marginal setups. Justin Gibbs
> would have to analyze the dump to confirm my analysis, but this type of
> problem is pretty common.
> 
> Its a remote possibility that an updated driver also tickles a bug in your
> drive's firmware -- I've seen this with an AIT-2 drive. You might check
> with the drive manufacturer if there is an update.
> 
> --
> Doug White                    |  FreeBSD: The Power to Serve
> dwhite at gumbysoft.com          |  www.FreeBSD.org