Martti Kuparinen wrote:

> I'm going to build a new home server with RAID-1 for everything (root,
> /home and swap). I've read raidctl(8) and David's howto at
> 
> http://mail-index.netbsd.org/port-i386/2002/07/17/0006.html
> 
> but one thing is a little bit unclear to me.

See also

http://mail-index.netbsd.org/port-i386/2003/07/02/0000.html

With this patch, I have both a 1.6 386 box with -current bootblocks and
a -current i386 box booting from a raidframe mirror.

> I'd really like to see some real-life fdisk and disklabel values...

Here's disklabel output from the -current box:

	# /dev/rwd0d:
	type: ESDI
	disk: IC35L120AVV207-0
	label: fictitious
	flags:
	bytes/sector: 512
	sectors/track: 63
	tracks/cylinder: 16
	sectors/cylinder: 1008
	cylinders: 16383
	total sectors: 241254720
	rpm: 3600
	interleave: 1
	trackskew: 0
	cylinderskew: 0
	headswitch: 0           # microseconds
	track-to-track seek: 0  # microseconds
	drivedata: 0 

	8 partitions:
	#        size    offset     fstype  [fsize bsize cpg/sgs]
	 a:   8388513        63       RAID                      # (Cyl.    0*- 8321)
	 b:   8388512 232866208       swap                      # (Cyl. 231018*- 239339)
	 c: 241254657        63     unused      0     0         # (Cyl.    0*- 239339)
	 d: 241254720         0     unused      0     0         # (Cyl.    0 - 239339)
	 e:  62914320  16777152       RAID                      # (Cyl. 16644 - 79058)
	 f: 153174672  79691472     4.2BSD   1024  8192 46376   # (Cyl. 79059 - 231017)
	 g:   8388576   8388576       RAID                      # (Cyl. 8322 - 16643)
	 h:   8388576 232866144       RAID                      # (Cyl. 231018 - 239339)

Note that each 'f' partition is an unmirrored scratch file system
on both disks.  Also, note that the 'b' partition overlaps the 'h'
partition.  I swap on to a raid device, but dump to a raw device
since you can't dump to a raidframe device.  Here's my fstab:

	/dev/raid0a             /               ffs     rw,softdep      1       1
	/dev/raid1b             none            swap    sw
	/dev/wd0b               none            dump    dp
	/dev/raid2a             /var            ffs     rw,softdep      1       2
	/dev/raid3a             /home           ffs     rw,softdep      1       3
	/dev/wd0f               /scratch        ffs     rw,softdep      1       4
	/dev/wd1f               /backup         ffs     rw,softdep      1       4
	swap                    /tmp            mfs     rw,-s=524288

And finally fdisk output:

	Disk: /dev/rwd0d
	NetBSD disklabel disk geometry:
	cylinders: 16383, heads: 16, sectors/track: 63 (1008 sectors/cylinder)
	total sectors: 241254720

	BIOS disk geometry:
	cylinders: 1023, heads: 255, sectors/track: 63 (16065 sectors/cylinder)
	total sectors: 241254720

	Partition table:
	0: <UNUSED>
	1: <UNUSED>
	2: <UNUSED>
	3: NetBSD (sysid 169)
	    start 63, size 241254657 (117800 MB, Cyls 0-15017/105/1), Active
	Bootselector disabled.

> PS. I think we should have something about raidframe in the NetBSD Guide.

Yes, we should do something about that.

Simon.
--
Simon Burge                            <simonb@wasabisystems.com>
NetBSD Support and Service:         http://www.wasabisystems.com/