>Number:         447
>Category:       kern
>Synopsis:       bt driver problem
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    gnats-admin (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Aug 30 23:05:02 1994
>Originator:     Michael L. VanLoon
>Organization:
HeadCandy Associates... Playing with your mind
>Release:        NetBSD/i386-1.0_Beta, 8/30/94 sup
>Environment:
ALR 486DLC EISA, 17MB, build from 8/30/94 current sup
	
System: NetBSD MindBender.HeadCandy.com 1.0_BETA NetBSD 1.0_BETA (MINDBENDER) #158: Sat Aug 13 22:33:31 CDT 1994 michaelv@MindBender.HeadCandy.com:/usr/src/sys/arch/i386/compile/MINDBENDER i386


>Description:
The last build I did was from a sup around the 12th or
13th.  That kernel has been running just great -- no problems.  I
built a kernel from the 8/20 sup, and again from the 8/30 sup,
remaking config each time, and both of them give me timeouts and
resyncs on the SCSI drive.  They generally look like this:

Aug 31 00:00:45 MindBender /netbsd: bt0: mbi at 0xf87039cc should be found, stat=81..resync
Aug 31 00:00:45 MindBender /netbsd: bt0: mbi at 0xf87039e4 should be found, stat=81..resync
Aug 31 00:00:45 MindBender /netbsd: bt0: mbi at 0xf87039fc should be found, stat=81..resync
Aug 31 00:00:45 MindBender /netbsd: sd0(bt0:0:0): timed out 

The system doesn't crash -- it generally continues to run for the
short amount of time I keep it up, but the resyncs and timeouts make
for very frequent and long pauses.  The 8/13 kernel doesn't exhibit
this behaviour.

(Charles, I'm not using your modifications that you suggested yet.)
	
>How-To-Repeat:
It happens every time I boot one of the new kernels
I've build.  I've built four different kernels that do this.
	
>Fix:
Heckifiknow.  It must be some modification made to something to
do with the SCSI subsystem or bt driver between now (or the 20th), and
the 12th or 13th, when it worked last.
	
>Audit-Trail:
>Unformatted:


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