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Date:      Sat, 26 Jul 2003 09:57:20 +0930
From:      Greg 'groggy' Lehey <grog@FreeBSD.org>
To:        Kirk Strauser <kirk@strauser.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Installing FreeBSD onto Vinum-volumes?
Message-ID:  <20030726002720.GG5448@wantadilla.lemis.com>
In-Reply-To: <87he5dxdlo.fsf@pooh.honeypot.net>
References:  <61117392.1058975488@[10.122.7.157]> <877k69z5p7.fsf@pooh.honeypot.net> <7653953.1058991702@[192.168.0.2]> <87he5dxdlo.fsf@pooh.honeypot.net>

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On Wednesday, 23 July 2003 at 14:11:31 -0500, Kirk Strauser wrote:
> At 2003-07-23T18:21:42Z, Eivind Olsen <eivind@aminor.no> writes:
>
>> Are you able to have a mirrored root-device (/) with this approach? Or
>> will you end up with having a single copy of / on one drive?
>
> I end up with a single copy of '/'.=20

OK, missed that.  The whole intention of the exercise I describe in
the book is to have a mirrored root file system.  This has been
consistently the most demanded new feature in Vinum.

> The reasons I do this are that:
>
> 1) Any old FreeBSD boot floppy/CD can read the "mirrors" of '/' in the ev=
ent
>    that the root drive dies, regardless of the state of vinum.  Makes
>    disaster recovery that much easier.

The way I describe works as well in this situation.

> 2) You get a little bit of versioning for free.  Accidentally overwrite
>    /etc/master.passwd with mergemaster?  Just grab the copy from
>    /rootbackup.

A much better approach, which I'll describe in the next edition of the
book, is to maintain all config files under RCS.  This gives you more
than one backup.

Greg
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