Subject: Re: Bootable root on raidframe
To: Martti Kuparinen <martti.kuparinen@iki.fi>
From: Manuel Bouyer <bouyer@antioche.lip6.fr>
List: port-i386
Date: 08/05/2003 11:33:43
On Tue, Aug 05, 2003 at 09:11:09AM +0300, Martti Kuparinen wrote:
> Manuel Bouyer wrote:
> 
> >asim:/users/largo1/bouyer#fdisk sd0
> >
> >Partition table:
> >0: <UNUSED>
> >1: <UNUSED>
> >2: <UNUSED>
> >3: sysid 169 (NetBSD)
> >    start 32, size 35843638 (17501 MB), flag 0x80
> 
> Why is this starting at 32 (instead of 63)?

Because of the geometry used by the BIOS for this drive:
cylinders: 1024 heads: 64 sectors/track: 32 (2048 sectors/cylinder)

> 
> >asim:/users/largo1/bouyer#disklabel sd0
> >
> >8 partitions:
> >#        size    offset     fstype  [fsize bsize cpg/sgs]
> > a:   2205000      2450       RAID                      # (Cyl.    1 - 900)
> > b:   2099200    108250       swap                      # (Cyl.   44*- 900)
> 
> Why do you have swap on sd0? You wrote that your swap is on raid1...

It's for dumps:
/dev/raid0a     /               ffs  rw 1 1
/dev/raid0b     none            swap sw 0 0
/dev/sd0b       none            dump dp 0 0

The kernel can't dump to a raid partition, because process scheduling is
stopped when dumps happens.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
     NetBSD: 24 ans d'experience feront toujours la difference
--