Re: AHA2940UW Crashing

[axp-list duct ml org]

I have seen this problem on an adaptec controller before...  In my case it
seemed as if the controller reset timeout wasn't long enough...  it simply
reset and then tried to read the disk which wasn't ready so the
controller attempted another reset...  And I bet you see a pattern
developing :-)
 I had a badly terminated scsi chain which casued occasional erros which
reset the bus and then all hell would break loose...  reset would start to
cycle...  it also only happened under heavy load if I remeber corectly...
I think the timeout is adjustable at kernel compile...  I never
bothered...I corected the termination...

On Wed, 18 Nov 1998, Barrett G. Lyon wrote:

> Hello all,
> 
> I have been having problems with my AHA2940UW card a lot, it caused a
> production server to crash last night, and I am wondering if anyone has any
> imput.  I have a very current version of the AIC7xxx driver, yet I have
> still been having problems.  
> 
> The crash happened during some very disk intensive things:
> 1.  tripwire verification
> 2.  backup to tape
> 3.  some auditing scripts
> 
> 
> I would not expect a machine to die just because it has a heavy I/O load.
> Any ideas, or information would be great.
> 
> 
> Information out of dmesg:
> scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.0pre15/3.2.4
>        <Adaptec AHA-294X Ultra SCSI host adapter>
> 
>   Vendor: IBM       Model: DCAS-34330W       Rev: S65A
>   Type:   Direct-Access                      ANSI SCSI revision: 02
> Detected scsi disk sda at scsi0, channel 0, id 1, lun 0
> 
>   Vendor: ARCHIVE   Model: Python 28388-XXX  Rev: 4.28
>   Type:   Sequential-Access                  ANSI SCSI revision: 02
> Detected scsi tape st0 at scsi0, channel 0, id 6, lun 0
> 
> 
> Error message (not exact because it was read off the screen over the phone
> by someone that did not understand what it was saying).
> 
> SCSI bus being reset for host 0 channel 0 
> SCSI host 0 channel 0 timed out trying harder.
> SCSI bus being reset for host 0 channel 0 (PID 5146587)
> 
> 
> Thanks,
> 
> Barrett
> 
> 
> 
> --
> Barrett G. Lyon                        PGP: www.netpr.com/pgpkeys
> Data & Network Security Consultant     Fax: 310-737-0196
> Network Presence, LLC                Email: blyon@netpr.com
> --
> 
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