FreeBSD 6.3 Raid1 (geom) configuration problem with multiple partitions

[Eric Anderson]

On 10/02/06 05:52, t.blum at home.nl wrote:
> Hi there,
> 
> I recently switched using FreeBSD on my server (used Linux before). I've a problem with configuring geom as raid1 for my two identical hd's. I started with installing a FreeBSD 6.3 on my ad0 disk. The install uses 1 slice with the default FreeBSD partition table:
> 
> ad0s1a (root) 
> ad0s1b (swap) 
> ad0s1d (var) 
> ad0s1e (tmp) 
> ad0s1f (usr)
> 
> Everything is working and at this point I started configuring geom with help of this: http://people.freebsd.org/~rse/mirror/.  tutorial (approach1). The following commands worked like a charm (second disk is ad3):
> 
> dd if=/dev/zero of=/dev/ad3 bs=512 count=79 
> gmirror label -v -n -b round-robin gm0 /dev/ad3 

So far, you've created a mirror (gm0) with one device in it (ad3).

> gmirror load fdisk -v -B -I /dev/mirror/gm0 

I think you meant:

gmirror load
fdisk -v -B -I /dev/mirror/gm0

> bsdlabel -w -B /dev/mirror/gm0s1 
> bsdlabel -e /dev/mirror/gm0s1 

So now you've told bsdlabel to create a default label, and install 
bootstrap.  Then you've edited the label, but we aren't sure how.  You 
should send the bsdlabel output here for us to look at.

> But when I look at /dev/mirror/ it only created 2 partitions, gm0s1a and gm0s1c so the following commands:
> 
> newfs -U /dev/mirror/gm0s1* 
> mount /dev/mirror/gm0s1* /mnt/*
> 
> Will not work for gm0s1d (var) gm0s1e (tmp) and gm0s1f (usr). Does anybody know what I am doing wrong?

Well, I think what you really are wanting, is to mirror your ad0 disk to 
ad3.  In that case, I think you want to make ad0 the first device in the 
gm0 mirror, and make ad3 the second.  Then, you'd need to change your 
fstab entries, and add geom_mirror_load="YES" to /boot/loader.conf so it 
would be recognized on boot.

Eric




-- 
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Eric Anderson        Sr. Systems Administrator        Centaur Technology
Anything that works is better than anything that doesn't.
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