misc/162502: mount -t mfs on vnode-based md device destroy him

Sat Nov 12 17:30:12 UTC 2011

>Number:         162502
>Category:       misc
>Synopsis:       mount -t mfs  on vnode-based md device destroy him
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Nov 12 17:30:11 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     subbsd
>Release:        9.0-RC2
>Organization:
>Environment:
>Description:
Attempt to mount_mfs on the vnode-based md file silently destroys it
>How-To-Repeat:
truncate -s 100m /tmp/testme
mdconfig -a -t vnode -f /tmp/testme
mount -t mfs /dev/md0 /mnt

After this - no mount, no /dev/md0 (mdconfig -l)

>Fix:


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