/dev/sa0 DSS-4 drive help

Peter Risdon peter at circlesquared.com
Thu Apr 15 03:30:55 PDT 2004

William Bailey wrote:

> I also get the following message from dmesg:
> (sa0:ahc0:0:6:0): Invalid request.  Fixed block device requests must be
> a multiple of 1 bytes
> |     I am currently trying to get a DSS-4 type drive working on a 5.2.1
> | RELEASE system but am haveing no joy at all. From dmesg at boot the
> | device if found as
> |
> | sa0 at ahc0 bus 0 target 6 lun 0
> | sa0: <ARCHIVE Python 06408-XXX 8130> Removable Sequential Access SCSI-3
> | device
> | sa0: 80.000MB/s transfers (40.000MHz, offset 32, 16bit)
> |
> | 

Hi. You haven't had any response yet so a long shot might be in order. I 
see you're using an adaptec scsi controller. I had dreadful problems 
with a brand new AHA29610 under 5.2, where lots of errors that seemed to 
point to a bad tape drive disappeared when I swapped the controller for 
an old Tekram DC390 I had lying around. I haven't tried the AHA again 
with 5.2.1 to see whether these probs have been cured.


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