From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Sat, 19 Jan 2013 18:17:42 +0100
Message-ID: <CAMs1eFTRTMzNjvXm-tuhpZ1quOi4ejhRd24qQySSTnTFRG_pLg@mail.gmail.com>
From: Tobias Kreisel <tobias.kreisel@gmail.com>
To: 9fans@9fans.net
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Subject: [9fans] Raspberry Pi: cpu and remote root
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Hi everyone,

Richard=E2=80=99s recent rpi port made me explore plan9 again and
I think I am slowly getting the hang of things. Currently there
are two aspects I wonder about:

1. I have two rpis. One configured as a terminal, the other as
   a cpu server (each using the templates on the fat partition).
   When logged in at the terminal (as glenda) I connect to the
   cpu server via

   cpu -h <ip address> -u pi

   and end up with a 'helix#' prompt. However, when trying
   to run a graphical program like 'sam' I get the error message:

   sam: can't create temp file: '/tmp/Z291.pisam' permission denied

   Of course I know that it is not much use to have computations
   of one rpi be done by another. I am simply trying to experience
   a genuine plan9 mode of operation.

   In Brian Kernighan=E2=80=99s README (
http://doc.cat-v.org/plan_9/2nd_edition/README)
   there a paragraph titled "The CPU Server" which I believe is
   what I am looking for, but I wasn=E2=80=99t able to replicate it on the
   rpi.

2. What do I need to do in order to have a rpi (configured as
   terminal) get its root remotely? I.e. at boot there is a prompt

   root is from (local, tcp)[local]:

   where I gave the ip address of another rpi (configured as a
   cpu server). But that did not work.


Thanks for your reading this far,
Tobias

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<div dir=3D"ltr">Hi everyone,<div><br></div><div style>Richard=E2=80=99s re=
cent rpi port made me explore plan9 again and</div><div style>I think I am =
slowly getting the hang of things. Currently there</div><div style>are two =
aspects I wonder about:</div>
<div style><br></div><div style>1. I have two rpis. One configured as a ter=
minal, the other as</div><div style>=C2=A0 =C2=A0a cpu server (each using t=
he templates on the fat partition).</div><div style>=C2=A0 =C2=A0When logge=
d in at the terminal (as glenda) I=C2=A0connect to the</div>
<div style>=C2=A0 =C2=A0cpu server via</div><div style><br></div><div style=
>=C2=A0 =C2=A0cpu -h &lt;ip address&gt; -u pi</div><div style><br></div><di=
v style>=C2=A0 =C2=A0and end up with a &#39;helix#&#39; prompt. However, wh=
en trying</div><div style>
=C2=A0 =C2=A0to run a graphical program like &#39;sam&#39; I get the error =
message:</div><div style><br></div><div style>=C2=A0 =C2=A0sam: can&#39;t c=
reate temp file: &#39;/tmp/Z291.pisam&#39; permission denied</div><div styl=
e><br></div><div style>
=C2=A0 =C2=A0Of course I know that it is not much use to have computations<=
/div><div style>=C2=A0 =C2=A0of one rpi be done by another. I am simply try=
ing to experience</div><div style>=C2=A0 =C2=A0a genuine plan9 mode of oper=
ation.</div><div style><br>
</div><div style>=C2=A0 =C2=A0In Brian Kernighan=E2=80=99s README (<a href=
=3D"http://doc.cat-v.org/plan_9/2nd_edition/README">http://doc.cat-v.org/pl=
an_9/2nd_edition/README</a>)</div><div style>=C2=A0 =C2=A0there a paragraph=
 titled &quot;The CPU Server&quot; which I believe is</div>
<div style>=C2=A0 =C2=A0what I am looking for, but I wasn=E2=80=99t able to=
 replicate it on the</div><div style>=C2=A0 =C2=A0rpi.</div><div style><br>=
</div><div style>2. What do I need to do in order to have a rpi (configured=
 as</div><div style>=C2=A0 =C2=A0terminal) get its root remotely? I.e. at b=
oot there is a prompt</div>
<div style><br></div><div style>=C2=A0 =C2=A0root is from (local, tcp)[loca=
l]:</div><div style><br></div><div style>=C2=A0 =C2=A0where I gave the ip a=
ddress of another rpi (configured as a</div><div style>=C2=A0 =C2=A0cpu ser=
ver). But that did not work.</div>
<div style><br></div><div style><br></div><div style>Thanks for your readin=
g this far,</div><div style>Tobias</div></div>

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