On Tue, Jan 05, 2010 at 11:36:11AM -0500, kent@watsen.net wrote:
quoted text
> Jurgen/Pete - thanks for your replies, but it seems that I wasn't clear  
> - my question is how to do fresh-install of OpenBSD with the new kernel  
> discovering and trying to use the old RAID partition.  I ultimately  
> solved this problem by rebooting using the old kernel and running  
> `raidctl -A no raid0`.  This way the new kernel doesn't try the  
> automatically mount the old RAID partition anymore...

Build and boot a bsd.rd with RAIDFrame and raidctl included.

quoted text
> BTW, I'm wondering if I'm wrong about SoftRAID - can it now contain the  
> root partition like RAIDframe?  - looking at softraid(4), I don't see  

no.

quoted text
> anything like `raidctl -A root <dev>` and I thought I read Marco saying  
> that it's planned but a thing called "life" keeps getting in the way:  
> (http://www.mail-archive.com/misc@openbsd.org/msg69397.html)

The boot chain can not load kernel on softraid sets.
You can put the root fs on a disk and store the rest of your system on
softraid sets.  Use the altroot mechanism to maintain a backup of your
root fs on another disk; the day the main disk breaks, you just have to
change a line in the fstab to boot.

$ df -h
Filesystem     Size    Used   Avail Capacity  Mounted on
/dev/wd0a      157M   69.2M   79.9M    46%    /
mfs:20000     72.6M    4.0K   68.9M     0%    /tmp
/dev/sd0d      1.1G    583M    521M    53%    /usr
/dev/sd0e      3.9G    2.6G    1.0G    71%    /usr/local
/dev/sd0f      1.9G    761M    1.1G    40%    /usr/src
/dev/sd0g      1.9G    1.2G    637M    66%    /usr/obj
/dev/sd0h      3.0G    887M    2.0G    30%    /var
/dev/sd0i      1.1G    500M    603M    45%    /usr/xenocara
/dev/sd0j      482M    189M    270M    41%    /usr/X11R6
/dev/sd0k      231G   73.9G    146G    34%    /home
/dev/sd0l     19.4G    3.2G   15.2G    17%    /usr/ports
$ grep alt /etc/fstab
/dev/wd1a /altroot ffs xx 0 0
$ sudo bioctl -ih sd0
Volume  Status               Size Device  
softraid0 0 Online               298G sd0     RAID1
      0 Online               298G 0:0.0   noencl <wd0d>
      1 Online               298G 0:1.0   noencl <wd1d>
$ sudo disklabel wd0c | tail -n 4
#                size           offset  fstype [fsize bsize  cpg]
  a:           327537               63  4.2BSD   2048 16384  324 
  c:        625142448                0  unused                   
  d:        624809745           327600    RAID                   
$ sudo disklabel wd1c | tail -n 4
#                size           offset  fstype [fsize bsize  cpg]
  a:           327537               63  4.2BSD   2048 16384    1 
  c:        625142448                0  unused                   
  d:        624809745           327600    RAID                   


Later,

-- 
Olivier Cherrier - Symacx.com
mailto:oc@symacx.com