>Number:         216
>Category:       port-i386
>Synopsis:       sd0(aha0:6:0): timed out, adapter not taking commands, frozen?!
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    gnats-admin (GNATS administrator)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Apr  8 02:05:08 1994
>Originator:     Steven Reiz
>Organization:
A.I. Engineering, Amsterdam
>Release:        NetBSD-current of Apr 6, 1994 (kernel and userland binaries)
>Environment:
486DX/33 ISA with 2 ESDI disks on WD1007V, Adaptec 1542CF with
		one SCSI disk, a Conner CFP1060S 1.05 GB SCSI 2 on id 6.
System: NetBSD aie8.aie.nl 0.9a AIE_ALL#0 i386
>Description:
After on the average two days of uptime, with disk i/o
		on the SCSI disk at least once every 10 minutes (news disk),
		the machine produces the following lines:
		sd0(aha0:6:0): timed out
		sd0(aha0:6:0): timed out
		adapter not taking commands.. frozen?!
		and jumps into the debugger, after a reset everything is
		(temporarily) ok again.
>How-To-Repeat:
		The bug(?) is typically NOT triggered during heavy disk i/o,
		but typically at night or during the weekend.
>Fix:
		I've tried a lot of settings combinations in the 1542CF
		bios (max 3.3 MB transfer, no sync neg., no fast SCSI),
		doesn't make a difference, the SCSI driver of before the
		last change (say jan., feb. 1994) had this problem as well.

		It may well be a problem with the Conner disk, even though it
		works for days just fine. However, I would really appreciate it
		if the 1542 driver would try to reset the adapter and/or devices
		instead of just jumping into the debugger. I am, of course,
		available to test new code.
>Audit-Trail:
>Unformatted:


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