bin/142155: dumpfs drops leading 0 (zero) from superblock id

[Tigger]

>Number:         142155
>Category:       bin
>Synopsis:       dumpfs drops leading 0 (zero) from superblock id
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Dec 30 03:40:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Tigger
>Release:        FreeBSD 8.0
>Organization:
n/a
>Environment:
FreeBSD eeeor.goo 8.0-RELEASE-p1 FreeBSD 8.0-RELEASE-p1 #8: Mon Dec 28 20:31:32 EST 2009     tigger at eeeor.goo:/usr/obj/usr/src/sys/EEEOR  i386
>Description:
dumpfs will drop a leading 0 (zero) from the reported id in the superblock location.

I'm using dumpfs to get the ufsid of drives (is there are better way?) in order to add the ids to /etc/fstab - to prevent drive lost when moving drives around or adding new ones, Something I've been hit with twice in the last month, once one a remote box!


>How-To-Repeat:
As you can see below, the id should be '[ 4ae2d4ec 06f7fec5 ]', not '[ 4ae2d4ec 6f7fec5 ]'

root at eeeor:/home/tigger# dumpfs / | head -18
magic   19540119 (UFS2) time    Wed Dec 30 14:16:57 2009
superblock location     65536   id      [ 4ae2d4ec 6f7fec5 ]
ncg     6       size    524288  blocks  506487
bsize   16384   shift   14      mask    0xffffc000
fsize   2048    shift   11      mask    0xfffff800
frag    8       shift   3       fsbtodb 2
minfree 8%      optim   time    symlinklen 120
maxbsize 16384  maxbpg  2048    maxcontig 8     contigsumsize 8
nbfree  41427   ndir    865     nifree  129262  nffree  17862
bpg     11761   fpg     94088   ipg     23552   unrefs  0
nindir  2048    inopb   64      maxfilesize     140806241583103
sbsize  2048    cgsize  16384   csaddr  3000    cssize  2048
sblkno  40      cblkno  48      iblkno  56      dblkno  3000
cgrotor 0       fmod    0       ronly   0       clean   0
avgfpdir 64     avgfilesize 16384
flags   none
fsmnt   /
volname         swuid   0

root at eeeor:/home/tigger# df -hc /
Filesystem                     Size    Used   Avail Capacity  Mounted on
/dev/ufsid/4ae2d4ec06f7fec5    989M    307M    603M    34%    /
total                          989M    307M    603M    34%


>Fix:
No idea, sorry.

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