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Date: Wed,  4 Feb 2015 09:28:17 +0100
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From: Giacomo Tesio <giacomo@tesio.it>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: Re: [9fans] wstat and atomic directory change
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2015-02-04 4:51 GMT+01:00 erik quanstrom <quanstro@quanstro.net>:

> On Tue Feb  3 01:01:02 PST 2015, steve@quintile.net wrote:
>
> > the control file idea is a neat way of doing atomic moves.
> >
>
> control files are a good way of dealing with all kinds of exceptional
> behavior.
>
> but ...
>
> to be fair, this goes against the unix ideal of having uniform file
> operations.
>

You are right.
But since protocol customizations goes against that same ideal, what's the
plan9 way of dealing with a feature X (in this specific case atomic file
moves)?


> this requires delving into the namespace to tell that the directories are
> still under the
> same mount, and some non-uniform operations.
>

Good point. But thus, what are the alternatives?


Giacomo

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote">2015=
-02-04 4:51 GMT+01:00 erik quanstrom <span dir=3D"ltr">&lt;<a href=3D"mailt=
o:quanstro@quanstro.net" target=3D"_blank">quanstro@quanstro.net</a>&gt;</s=
pan>:<br><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-styl=
e:solid;padding-left:1ex"><span class=3D"">On Tue Feb=C2=A0 3 01:01:02 PST =
2015, <a href=3D"mailto:steve@quintile.net">steve@quintile.net</a> wrote:<b=
r>
<br>
&gt; the control file idea is a neat way of doing atomic moves.<br>
&gt;<br>
<br>
</span>control files are a good way of dealing with all kinds of exceptiona=
l behavior.<br>
<br>
but ...<br>
<br>
to be fair, this goes against the unix ideal of having uniform file operati=
ons.<br></blockquote><div><br></div><div>You are right.</div><div>But since=
 protocol customizations goes against that same ideal, what&#39;s the plan9=
 way of dealing with a feature X (in this specific case atomic file moves)?=
</div><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0p=
x 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);bo=
rder-left-style:solid;padding-left:1ex">
this requires delving into the namespace to tell that the directories are s=
till under the<br>
same mount, and some non-uniform operations.<br></blockquote><div><br></div=
><div>Good point. But thus, what are the alternatives?</div><div><br></div>=
<div><br></div><div>Giacomo</div></div></div></div>

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