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Date:      Thu, 27 Apr 2017 17:22:42 +0200
From:      Dave Cottlehuber <dch@skunkwerks.at>
To:        freebsd-questions@freebsd.org
Subject:   Re: Some ZFS questions
Message-ID:  <1493306562.346687.958279176.43C64097@webmail.messagingengine.com>
In-Reply-To: <8c6322c0-b425-84e8-87c8-ed4cff727955@netfence.it>
References:  <c81a1c46-e3c5-f7ab-deb2-fa2a45493b23@netfence.it> <CAMODbknNZBiVdxDbVMxdFfcRd1wW0BXHbqGkiARKo+D=F6XfvQ@mail.gmail.com> <CAMODbkk7=53=4Uji0o7G_M_MnQojpqiBRHQObhPq5g3jHKfyfw@mail.gmail.com> <CAMODbkncavbdNAK58YpzOKdt95GTRB2YmzXirrguk0dQ83cXdQ@mail.gmail.com> <8c6322c0-b425-84e8-87c8-ed4cff727955@netfence.it>

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On Thu, 27 Apr 2017, at 16:19, Andrea Venturoli wrote:
> On 04/18/17 11:21, Frederic Chardon wrote:
> 
> >     What puzzles me is "zroot/ROOT": why do we need that? Why do we
> >     mount "zroot/ROOT/default" as root instead of simply mounting
> >     "zroot" at /?
> > 
> > 
> > It's a setup for Boot Environment (just google that ;)). If you install 
> > sysutils/beadm you can then have in parallel several root fs. It's not 
> > mandatory but so useful that's is enabled by default.
> 
> Thanks.
> Now I understand what this is and why it is useful.
> 
> Still, I think I need a SHTF-plan before I put such a system in
> production.
> Is there any step-by-step instruction on how to mount the box's HD from 
> a live filesystem?
> 
>   bye & Thanks
> 	av.

http://www.callfortesting.org/bhyve-boot-environments/ is excellent, as
is http://www.infracaninophile.co.uk/articles/zfs-update-management/

closer to a step-by-step I don't think you'll find anywhere.

A+
Dave



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