Booting from vinum RAID 1: How should I edit my disk label?

[Greg 'groggy' Lehey]

On Sunday, 28 December 2003 at 20:27:37 -0800, Micheas Herman wrote:
> Hi,
>
> I am following "13.9.2 Making a Vinum-based Root Volume Accessible to
> the Bootstrap" from the FreeBSD Handbook.
>
> (/dev/vinum/root is mounted at /newroot )
>
> ...
> Subdisk root.p1.s0:
>                 Size:        146664960 bytes (139 MB)
>                 State: up
>                 Plex root.p1 at offset 0 (0  B)
>                 Drive vinumdrive3 (/dev/ad7s1d) at offset 135680 (132 kB)
                                    ^^^^^^^^^^^^

> # disklabel -e /dev/ad7s1
>
> gives;
>
> # /dev/ad7s1:
> 8 partitions:
> #        size   offset    fstype   [fsize bsize bps/cpg]
>   a:  9216000 14966784    4.2BSD     2048 16384 28552
>   b: 20942848 24182784    4.2BSD     2048 16384 28552
>   c: 45126522        0    unused        0     0         # "raw" part, don't edit
>   d:   286720        0    4.2BSD        0     0     0

That's wrong.  It should be of type Vinum.  It also looks very short.

>   e:  4194304   286720    4.2BSD     2048 16384 28552
>   f:  4194304  4481024    4.2BSD     2048 16384 28552
>   g:  4194304  8675328    4.2BSD     2048 16384 28552
>   h:  2097152 12869632    4.2BSD     2048 16384 28552
>
> I am not sure what my disklabel -e /dev/ad7s1 should look like.

That depends on what you're trying to do.  I suspect that the entire
disk label is bogus.

Take a look at http://www.vinumvm.org/cfbsd/vinum.pdf and see if that
makes any more sense.  It's basically trying to tell you the same
thing.

Greg
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