I've got something here that I don't understand at all...  The system
was installed back in October, using the then latest release (1.5.2,
was it?), and upgraded to -current in November.  Everything was fine,
until I "re-currented" it in July.  Then, one single, weird problem
showed up:

This system boots its kernel from a small sd0a partition, but has its
file systems on auto-configured RAIDframe file systems.  This still
works, except that -current can't mount /dev/sd0a anymore!  I have to
keep the old kernel around as /netbsd.keep, just to boot from it when I
want to update the kernel on sd0a.  :-)

14 argus:~# ls -l /netbsd*
-rwxr-xr-x  1 root  wheel  5996749 Jul 11 09:35 /netbsd
-rwxr-xr-x  1 root  wheel  5493515 Nov  9  2001 /netbsd.keep
15 argus:~# grep sd0a /etc/fstab
/dev/sd0a /0 ffs rw,noauto 0 0
16 argus:~# fsck -f /dev/rsd0a
** /dev/rsd0a
** File system is already clean
** Last Mounted on /0
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
5 files, 34088 used, 30986 free (10 frags, 3872 blocks, 0.0% fragmentation)
17 argus:~# mount /0
mount_ffs: /dev/sd0a on /0: incorrect super block
18 argus:~# disklabel sd0
[...]
8 partitions:
#        size    offset     fstype  [fsize bsize cpg/sgs]
 a:     69209        63     4.2BSD    512  4096     8   # (Cyl.    0*- 29*)
 c:  35524377        63     unused      0     0         # (Cyl.    0*- 15103*)
 d:  35548320         0     unused      0     0         # (Cyl.    0 - 15114*)
 e:    262208     69272       RAID                      # (Cyl.   29*- 140*)
 f:   2097216    331480       RAID                      # (Cyl.  140*- 1032*)
 g:  33095744   2428696       RAID                      # (Cyl. 1032*- 15103*)
19 argus:~# dumpfs sd0a
file system: /dev/rsd0a
endian	little-endian
magic	11954	time	Thu Jul 11 09:50:11 2002
id	[ 0 0 ]
cylgrp	dynamic	inodes	4.4BSD	fslevel 3	softdep disabled
nbfree	3872	ndir	1	nifree	16377	nffree	10
ncg	4	ncyl	30	size	69299	blocks	65074
bsize	4096	shift	12	mask	0xfffff000
fsize	512	shift	9	mask	0xfffffe00
frag	8	shift	3	fsbtodb	0
cpg	8	bpg	2352	fpg	18816	ipg	4096
minfree	5%	optim	time	maxcontig 16	maxbpg	1024
rotdelay 0ms	rps	60
ntrak	6	nsect	392	npsect	392	spc	2352
symlinklen 60	trackskew 0	interleave 1	contigsumsize 16
maxfilesize 0x000004010040bfff
nindir	1024	inopb	32	nspf	1
avgfilesize 16384	avgfpdir 64
sblkno	32	cblkno	48	iblkno	56	dblkno	1080
sbsize	2048	cgsize	3584	offset	392	mask	0xfffffff8
csaddr	1080	cssize	512	shift	8	mask	0xffffff00
cgrotor	1	fmod	0	ronly	0	clean	0x01
blocks available in each of 1 rotational positions
[...]
20 argus:~# fsdb -n -f /dev/rsd0a
** /dev/rsd0a (NO WRITE)
** File system is already clean
Editing file system `/dev/rsd0a'
Last Mounted on /0
current inode: directory
I=2 MODE=40755 SIZE=512
        MTIME=Jul 11 08:24:01 2002 [157213000 nsec]
        CTIME=Jul 11 08:24:01 2002 [157213000 nsec]
        ATIME=Jul 11 09:50:25 2002 [670000000 nsec]
OWNER=root GRP=wheel LINKCNT=2 FLAGS=0x0 BLKCNT=0x1 GEN=0x0
fsdb (inum: 2)> ls
slot 0 ino 2 reclen 12: directory, `.'
slot 1 ino 2 reclen 12: directory, `..'
slot 2 ino 4 reclen 16: regular, `boot'
slot 3 ino 3 reclen 20: regular, `netbsd.old'
slot 4 ino 6 reclen 16: regular, `netbsd'
slot 5 ino 5 reclen 436: regular, `gennetbsd'
fsdb (inum: 2)> quit
21 argus:~# 

-tih
-- 
Tom Ivar Helbekkmo, Senior System Administrator, Catch Communications
www.catch.no  Phone: +47-22092958 Mob: +47-93013940 Fax: +47-22092901