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Date: Sat, 21 Oct 2000 18:25:39 -0500 (CDT)
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Subject: dscheck(#cd/2) negative b_blkno --16779696
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>Number:         22200
>Category:       kern
>Synopsis:       4.1.1-RELEASE can't mount CDROMS (negative b_blkno)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Oct 21 16:30:01 PDT 2000
>Closed-Date:    Wed Jul 18 21:07:18 PDT 2001
>Last-Modified:  Wed Jul 18 21:11:37 PDT 2001
>Originator:     Gordon Burditt
>Release:        FreeBSD 4.1-RELEASE i386
>Organization:
>Environment:

	
	Attempting source upgrade from 4.1-RELEASE to 4.1.1-RELEASE
	( Procedure as in UPDATING: replace 4.1 source tree with 4.1.1 
	source tree; make buildworld; make buildkernel KERNEL=HAMMY; 
	make installkernel KERNEL=HAMMY ; reboot.  Userland stuff is still 4.1)

	AMD K6-2 233MHz, AHA1452 SCSI controller, 5 SCSI CD-ROMs.
	Single CPU.

>Description:
	Boot 4.1.1 kernel (single user, since fstab mounts of CDROMs
	are going to fail).
	mount -t cd9660 /dev/cd0c /mnt

	dscheck(#cd/2): negative b_blkno -16779696

	This fails on 5 different SCSI CD-ROM drives, using various
	Walnut Creek FreeBSD CD-ROMs from versions 3.3, 4.0, (as shipped
	by Walnut Creek) and the burnt ISO from 4.1.1.
	The numbers after #cd/2 vary for each drive.

	The exact same operation using a 4.1-RELEASE kernel I built
	and have been using for several months works fine.
	CDROM drives are detected OK on both kernels.
	All the entries in /dev were re-built when I installed 4.1-RELEASE.
	
	This fails on 3 different kernels:
	- kernel copied from 4.1.1-RELEASE iso
	- kernel built with make buildkernel from 4.1.1 source tree
	- kernel built from 4.1.1 source using 4.1 tools
	  (config HAMMY; cd /sys/compile/HAMMY; make depend; make)

	

>How-To-Repeat:

	
	Boot 4.1.1 kernel (single user, since fstab mounts of CDROMs
	are going to fail).
	mount -t cd9660 /dev/cd0c /mnt

	dscheck(#cd/2): negative b_blkno -16779696


>Fix:

	
	No workaround or solution known, other than dropping back
	to 4.1.

						Gordon L. Burditt

>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: gnats-admin->freebsd-bugs 
Responsible-Changed-By: phantom 
Responsible-Changed-When: Sun Oct 22 07:29:16 PDT 2000 
Responsible-Changed-Why:  
Misfilled PR 

http://www.freebsd.org/cgi/query-pr.cgi?pr=22200 
State-Changed-From-To: open->closed 
State-Changed-By: mike 
State-Changed-When: Wed Jul 18 21:07:18 PDT 2001 
State-Changed-Why:  

It appears the originator's userland and kernel are out-of-sync. 
If he is still having problems upgrading, it would be best to 
follow up in -questions. 


http://www.FreeBSD.org/cgi/query-pr.cgi?pr=22200 
>Unformatted:
