>Number:         518
>Category:       port-i386
>Synopsis:       kernel panics on bootup as a result of recent disklabel changes
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    gnats-admin (GNATS administrator)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Oct 17 03:20:06 1994
>Originator:     Andrew Herbert
>Organization:
n/a
>Release:        17 Oct '94 sup
>Environment:
System: NetBSD eplet.apana.org.au 1.0A NetBSD 1.0A (EPLET) #0: Mon Oct 17 15:50:19 EST 1994 andrew@eplet.apana.org.au:/src/netbsd/sys/arch/i386/compile/EPLET i386

>Description:
cgd's recent disklabel modifications have resulted in kernels for my
i386-arch + scsi machines crashing during ffs_mountroot().  More precisely,
they die in sdminphys() <- sdstrategy() <- readdisklabel() <-
sdgetdisklabel() <- sdopen() <- ... <- ffs_mountroot().

>How-To-Repeat:
Build a kernel for a scsi-based i386 system and boot.

>Fix:
I "fixed" the problem by reversing out cgd's recent disklabel changes from
the following files:

	sys/disklabel.h, scsi/{sd.c,cd.c}, arch/i386/i386/disksubr.c,
	arch/i386/include/{disklabel.h,param.h}

Unfortunately I haven't yet had time to sit down and locate the problem in
the new disklabel code.
>Audit-Trail:
>Unformatted: