[2856] in linux-scsi channel archive
2.0.32: SCSI hang with AIC7xxx during backup
daemon@ATHENA.MIT.EDU (Ulrich Windl)
Mon Nov 24 03:13:56 1997
From: "Ulrich Windl" <ulrich.windl@rz.uni-regensburg.de>
To: linux-scsi@vger.rutgers.edu
Date: Mon, 24 Nov 1997 08:27:35 +0100
Cc: aic7xxx@freebsd.org
Hello,
I and my error are back: In 2.0.32 the SCSI hang during backup still
occurs. I got a
scsi0: Referenced SCB 255 not valid during SELTO
and the machine stoped any disc accesses (while performing never
ending SCSI resets). The light of the host adapter was permanently on
during that.
My hardware is a 2940 (AIC7871 Rev. 3), and I backed up a Conner 1GB
SCSI disk (ID 0) to a HP SCSI DAT (ID 2). I had enabled SCB paging
and tagged queueing. I never had a problem with disk-only access.
As reported before the /proc/scsi/aic7xxx/0 statistics still store
tape wites as reads!
I copied some of the messages by hand; maybe they are helpful, but I
was unable to capture any messages to a disc; sorry!
SCSISEQ = 0x5a SEQADDR=0x4 SSTAT0=0x15 SSTAT1=0x8a
Ulrich
