SCSI problem with Adaptec 2940 (ahc) card

SCSI problem with Adaptec 2940 (ahc) card

Post by Stephen Corbese » Tue, 14 Jul 1998 04:00:00

We have a PentiumPro machine acting as a news server.  The machine has
128MB of memory, one 4GB scsi drive as its main drive, and 8 other 4GB
scsi drives ccd'd together as the news spool.  The drives are all
"SEAGATE ST15230W", which are wide SCA drives.  We have them in a
special enclosure on SCA trays. Five of the drives are on one of the
2940's, and the other four are on the other 2940.

The OS version is 2.2.6-RELEASE.

We just had a crash and I found the following messages in the log.
The final messages are repeated for the other scsi drives on the bus.

... /kernel: ahc0: WARNING no command for scb 9 (cmdcmplt)
... /kernel: QOUTCNT == 1
... /kernel: sd0(ahc0:0:0): SCB 0x6 - timed outwhile idle, LASTPHASE == 0x1, SCSISIGI == 0x0
... /kernel: SEQADDR = 0x6 SCSISEQ = 0x12 SSTAT0 = 0x5 SSTAT1 = 0xa
... /kernel: sd0(ahc0:0:0): SCB 6: Immediate reset.  Flags = 0x1
... /kernel: sd0(ahc0:0:0): no longer in timeout
... /kernel: ahc0: Issued Channel A Bus Reset. 5 CBs aborted

... /kernel: sd0(ahc0:0:0): UNIT ATTENTION asc:29,0
... /kernel: sd0(ahc0:0:0):  Power on, reset, or bus device reset occurred field replaceable unit: 1
... /kernel: , retries:3

Is this a hardware error?  is it the controller or one (or more) of the drives?

Could it be a kernel configuration option I need to set or unset?

I would welcome any hints, suggestions, or similar experiences.

Stephen Corbesero                     Systems Manager and Adjunct Lecturer
19 Memorial Drive West, EECS Dept.    This message has been brought to you
Lehigh Univ., Bethlehem, PA 18015     by electrons.  


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