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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Seeking working, complete example for a vm
Date: Sat, 29 Oct 2016 01:49:03 +0200
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	<20161028162739.GA1862@jasmine> <58138249.4090005@crazy-compilers.com>
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In-Reply-To: <20161028180711.GA2612@jasmine> (Leo Famulari's message of "Fri,
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To: Leo Famulari <leo@famulari.name>
Cc: help-guix@gnu.org

Hello!

Leo Famulari <leo@famulari.name> skribis:

> On Fri, Oct 28, 2016 at 06:52:25PM +0200, Hartmut Goebel wrote:
>> Am 28.10.2016 um 18:27 schrieb Leo Famulari:
>> > Can you clarify if you are trying to use a container or a VM?
>> Sorry for the confusion: I'm trying to set up a vm.
>>=20
>> (I tried container first, but davexunit informed me that networking is
>> not yet implemented there, so I switched to vm.)
>
> `guix system vm` creates an immutable system that shares the host's
> store. The annoying LSH host key issue will be the first problem if you
> want to write to the filesystem. Since it lives in the store, you can't
> mutate it. I think that parts of the filesystem are mutable RAM-backed
> partitions.

The host key of lshd lives in /etc, not in the store (it would be a
security problem because the store is world-readable).

The =E2=80=9Cannoying=E2=80=9D thing when using the lsh service is that it =
wants you to
type so that it can seed its PRNG.  Now, you can use OpenSSH or Dropbear
to sidestep that.

The image returned by =E2=80=98guix system vm=E2=80=99 has a writable RAM-b=
acked root
file system.  It has a read-only store though, meaning you cannot
perform Guix operations in it.

Ludo=E2=80=99.