misc/119638: fsck_ffs -b 32 doesn't repair primary superblock

[Dieter]

>Number:         119638
>Category:       misc
>Synopsis:       fsck_ffs -b 32 doesn't repair primary superblock
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Jan 13 22:10:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Dieter
>Release:        6.2
>Organization:
>Environment:
6.2-RELEASE amd64
>Description:
fsck_ffs -b 32 doesn't repair primary superblock

# fsck_ffs -b 32  /dev/da0s1
Alternate super block location: 32
** /dev/da0s1
** Last Mounted on
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
451 files, 994 used, 95917 free (21 frags, 11987 blocks, 0.0% fragmentation)

# mount /dev/da0s1 /mnt
mount: /dev/da0s1: Operation not permitted

console says: WARNING: R/W mount of /mnt denied.  Filesystem is not clean - run fsck


# fsck_ffs   /dev/da0s1
** /dev/da0s1
BAD SUPER BLOCK: VALUES IN SUPER BLOCK DISAGREE WITH THOSE IN FIRST ALTERNATE
ioctl (GCINFO): Inappropriate ioctl for device
fsck_ffs: /dev/da0s1: can't read disk label
# fsck   /dev/da0s1
** /dev/da0s1
BAD SUPER BLOCK: VALUES IN SUPER BLOCK DISAGREE WITH THOSE IN FIRST ALTERNATE
ioctl (GCINFO): Inappropriate ioctl for device
fsck_ufs: /dev/da0s1: can't read disk label

>How-To-Repeat:

>Fix:


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