Subject: Re: Fw: Raid10
To: dkwok <dkwok@iware.com.au>
From: Greg Oster <oster@cs.usask.ca>
List: port-i386
Date: 06/27/2001 00:42:21
"dkwok" writes:
> 
> ----- Original Message -----
> From: dkwok <dkwok@iware.com.au>
> To: <port-i386@netbsd.org>
> Sent: Tuesday, June 26, 2001 2:19 PM
> Subject: Raid10
> 
> 
> > I am running NetBSD-1.5.1_BETA2.
> >
> > I am building a Raid10 set which consists of 4 ide disks, wd0, wd1, wd2 &
> > wd3. Wd0 & Wd2 are in a pair and wd 1 & wd3 are in a pairs.
> >
> > First I build raid1 set as follows:
> > wd0 & wd2
> > a:     500M         0   4.2BSD  1024 8192 16
> > c:  30000M        0   unused
> > d:  30000M        0   unused
> > e:       500M 500M  RAID      # swap disk   - raid0
> > f:    20000M 1000M RAID     # /  - raid1
> > g:   27000M  30000M RAID   # strip - raid2
> >
> > wd1 & wd3
> >
> > c: 15000M   0   unused
> > d: 15000M   0   unused
> > e:  15000M   0  RAID              # strip -raid3
> >
> > The configuration of raid1 for raid0, raid1, raid2, raid3 is ok. Then I am
> > stuck as to how to configure the disklabel of raid2 & raid3 for stripping.
> > I have man page, it is very brief on the makeup of raid.conf for raid on
> > raid. However my problem is that I cannot setup the disklabel of raid2 and
> > raid3 by assigning e partition for raid as this:
> >
> > raid2
> > d:  27000M   0   unused
> > e:  27000M   0    RAID
> > raid3
> > d:  15000M   0   unused
> > e:  15000M   0    RAID
> > When I replace the disklabel by doing disklabel -R -r raid2
> > /root/disklabel.raid2, I got the error message saying:
> >
> > disklabel: warning: unused partition e: size 27000M offset 0

You don't show the full disklabel, but how many partitions are in the 

  8 partitions: 

line?  (I'm betting it just says 4...  Bump that to 5 (or 8 or whatever) 
and you should be fine...

> > Anyone has experienced setting up raid10 set?

Yup. 

Later...

Greg Oster