kern/115530: Mounting msdos filesystem fails after csup to RELENG_6

[Volker]

>Number:         115530
>Category:       kern
>Synopsis:       Mounting msdos filesystem fails after csup to RELENG_6
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Aug 14 22:00:05 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator:     Volker
>Release:        FreeBSD 6.2
>Organization:
FreeNAS developer
>Environment:
>Description:
After upgrading to RELENG_6 (buildworld + buildkernel) i'm not able to mount large msdos filesystems (>300GB).
The '-o large' attribute as proposed in http://docs.freebsd.org/cgi/getmsg.cgi?fetch=160898+0+/usr/local/www/db/text/2007/cvs-all/20070715.cvs-all
does not work.

I got the following error messages:

# mount -t msdosfs /dev/ad10s1 /mnt/10
mount_msdosfs: /dev/ad10s1: No such file or directory

# mount -t msdosfs -o large /dev/ad10s1 /mnt/10
mount_msdosfs: -o large: option not supported

There is also a mail in the 'filesystem' mailing list that describes the same problem. See here:
http://lists.freebsd.org/pipermail/freebsd-fs/2007-July/003572.html

>How-To-Repeat:
csup to RELENG_6, buildworld + buildkernel, try to mount big msdos filesystem.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: