Some ZFS questions

[Dave Cottlehuber]

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