On Mon, 12 Aug 2002 @ 10:08am (+0100), David Brownlee wrote:

DB> On Sun, 11 Aug 2002, Chris Lloyd wrote:
DB>
DB> > loey,
DB> >
DB> > I know that NetBSD(/i386) can boot from a raid 1 device, but what is the best
DB> > way to install onto one? Should I make some custom install floppies, or is
DB> > there a better way?
DB>
DB> 	You can install as normal on one disk, get everything running and
DB> 	use the following to switch to RAID. I've used this on systems

...any idea if this will work on non-i386? i may have to try this.

-lava

DB> 	without console access, but not recommended :)
DB>
DB> 	Assuming you want to mirror wd0 and wd1.
DB>
DB> 	- Install the system normally on wd0, without setting up RAID.
DB>
DB> 	- disklabel wd1, and ensure wd1a starts at least 100 blocks from
DB> 	  the start of the disk (a cylinder is a good unit), wd1c should
DB> 	  be identical to wd1d. You can raid the entire disk, or just part,
DB> 	  using the remainder for less critical storage, or even swap.
DB>
DB> 	- Create /etc/raid0.conf, note 'wd9a' should be a non existant disk
DB> 	    START array
DB> 	    1 2 0
DB>
DB> 	    START disks
DB> 	    /dev/wd1a
DB> 	    /dev/wd9a
DB>
DB> 	    START layout
DB> 	    128 1 1 1
DB>
DB> 	    START queue
DB> 	    fifo 100
DB>
DB> 	- Setup the raid
DB> 	  raidctl -C /etc/raid0.conf raid0
DB> 	  raidctl -I 6502		(Just need to pick a unique number)
DB> 	  raidctl -i raid0		(Ignore error messages)
DB>
DB> 	- disklabel -i -I raid0
DB> 	  Create at least raid0a.
DB>
DB> 	- Copy installed system from / to /mnt. Dump, pax, or tar OK.
DB> 	  eg:
DB> 	  newfs raid0a
DB> 	  mount /dev/raid0a /mnt	(If separate /usr etc, newfs & mount).
DB> 	  eg: 'cd / ; pax -X -rw -pe / /mnt'
DB>
DB> 	- Edit /mnt/etc/fstab and update wd0 lines to raid0.
DB>
DB> 	- /usr/mdec/installboot -b 16 /usr/mdec/biosboot.sym /dev/rwd1d
DB>
DB> 	- 'raidctl -A root raid0', then reboot.	 The kernel should boot
DB> 	  from wd0, then automatically use raid0 as the root filesystem.
DB>
DB> 	- disklabel wd0 to match wd1. Note, if the c: partition did not
DB> 	  previously start at offset 0 you will need to use 'disklabel -I'
DB> 	  (possibly twice to make sure :)
DB>
DB> 	- raidctl -a /dev/wd0a raid0
DB>
DB> 	- raidctl -F component1 raid0
DB>
DB> 	- /usr/mdec/installboot -b 16 /usr/mdec/biosboot.sym /dev/rwd0d
DB>
DB>
DB>
DB> --
DB> 		David/absolute		-- www.netbsd.org: No hype required --
DB>
DB>

later -           | _BonaFide[] = { coder, author, | /~\ The ASCII Ribbon
Brian A. Seklecki | problem solver, scholar, BOFH, | \ / Campaign Against
                  | vegetarian, runner, NetBSD     |  X  Exchange, Outlook
                  | advocate, spiritual machine }; | / \ & HTML Email

PGP: 0111 4618 0111 4618 4AB2 24EB C853 6611 75C4 A91E A7A7 4973

"GNU/Linux: About as stable as the elements at the bottom of the periodic table"