gvinum crashes, help!

[rk]

Hi

I have a server running FreeBSD 5.3 ... as of yesterday 5.4

It has a RAID1 on 2x4.3Gig drives for the OS, and *had* RAID5 on 3x120GB 
drives (the 120GB drives are no longer in the box)

It has now beed upgraded to 4x250GB drives (that will run in RAID5).

My problems are: (in a nutshell: no resetconfig implemented in gvinum yet)

A. I cannot fully clean up the old RAID5 configuration. the subdisks 
appear as "up" (the rest of the objects - disks, volume, plex - are gone)
attempting to delete these subdisks immediately crashes the machine. I 
upped the sys/, lib/libgeom, sbin/geom and sbin/gvinum to RELENG_5_4
I hoped the newly-added support for set-state will help. nada. I can set 
the ghost subdisks to down (which will not persist over a reboot) but even 
when down attempting to remove them bounces the box.

The configuration seems like it is saved somewhere on the 4.3 Gig disks. 
Maybe I can somehow manually edit it...?

Here's a gvinum l -r :
gvinum l -r
2 drives:
D sys-b                 State: up       /dev/da1s1h     A: 255/4141 MB (6%)
S sys.p1.s0             State: up       D: sys-b        Size:       3885 MB
D sys-a                 State: up       /dev/da0s1h     A: 255/4141 MB (6%)
S sys.p0.s0             State: up       D: sys-a        Size:       3885 MB

1 volume:
V sys                   State: up       Plexes:       2 Size:       3885 MB
P sys.p1              C State: up       Subdisks:     1 Size:       3885 MB
S sys.p1.s0             State: up       D: sys-b        Size:       3885 MB
P sys.p0              C State: up       Subdisks:     1 Size:       3885 MB
S sys.p0.s0             State: up       D: sys-a        Size:       3885 MB

2 plexes:
P sys.p0              C State: up       Subdisks:     1 Size:       3885 MB
S sys.p0.s0             State: up       D: sys-a        Size:       3885 MB
P sys.p1              C State: up       Subdisks:     1 Size:       3885 MB
S sys.p1.s0             State: up       D: sys-b        Size:       3885 MB

5 subdisks:
S store.p0.s2           State: up       D: store-c      Size:        111 GB
S store.p0.s1           State: up       D: store-b      Size:        111 GB
S store.p0.s0           State: up       D: store-a      Size:        111 GB
S sys.p0.s0             State: up       D: sys-a        Size:       3885 MB
S sys.p1.s0             State: up       D: sys-b        Size:       3885 MB

How can I clean those annying bits out?

B. Creating the new RAID.
When I run gvinum create, again, the box mercilessly crashes. No nice 
readable kernel panic, just an immediate reboot.

The four new drives are all in.

All look like this:
#bsdlabel /dev/ad4s1
# /dev/ad4s1:
8 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
   c: 488392002        0    unused        0     0         # "raw" part, 
don't edit
   h: 488391986       16     vinum

I created a new configuration to RAID them:

drive hold1 device /dev/ad4s1h
drive hold2 device /dev/ad6s1h
drive hold3 device /dev/ad8s1h
drive hold4 device /dev/ad10s1h
volume hold
   plex org raid5 715425M
     sd length 238475M drive hold1
     sd length 238475M drive hold2
     sd length 238475M drive hold3
     sd length 238475M drive hold4

The moment I run create with this file, zbang.

Help :-)

TIA

Miki S