Subject: port-sparc/2062: reboot or halt not happening 'sometimes'
To: None <gnats-bugs@NetBSD.ORG>
From: David Gilbert <>
List: netbsd-bugs
Date: 02/10/1996 20:08:38
>Number:         2062
>Category:       port-sparc
>Synopsis:       reboot or halt stalls unmounting some disks
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    gnats-admin (GNATS administrator)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Feb 10 20:35:04 1996
>Originator:     David Gilbert
|David Gilbert, PCI, Richmond Hill, Ontario.  | Two things can only be     |
|Mail:         |  equal if and only if they |
|               |   are precisely opposite.  |
>Release:        1.1
System: NetBSD repeat 1.1A NetBSD 1.1A (REPEAT) #37: Fri Feb 9 23:31:14 EST 1996 root@:/u/dgilbert/src/sys/arch/sparc/compile/REPEAT sparc

	It seems to me that the system has to be up for a day or so
for this to take effect, but the symtom is that reboot or halt will
not reboot or halt.  Several times, I have tried taking it to single
user mode, and then unmounting the disks.  Unmounting my news spool
hung the system there.

	Now when I come back up out of either one of these problems, I
find that there are never any problems --- so the sync is working
(doesn't complain at all abou the disks in fsck), but the actual
unmount (setting the clean bit?) never happens.

	Note that if the machine is up a few hours it will normally
reboot.  I'm wondering if this may be something that expire does to
the disk, but I have no hard data.  I think that I have dump
technology finally mastered if a kernel dump might help you (how do I
trigger one is a good question).