Date: Fri, 14 Nov 2003 15:01:24 +0100
From: Andrea Arcangeli <andrea@suse.de>
To: "H. Peter Anvin" <hpa@zytor.com>, Davide Libenzi <davidel@xmailserver.org>,
       Larry McVoy <lm@bitmover.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: kernel.bkbits.net off the air
Message-ID: <20031114140124.GQ1649@x30.random>
References: <3FAFD1E5.5070309@zytor.com> <Pine.LNX.4.44.0311101004150.2097-100000@bigblue.dev.mdolabs.com> <20031110183722.GE6834@x30.random> <3FAFE22B.3030108@zytor.com> <20031110193101.GF6834@x30.random> <20031114051300.GA3466@pimlott.net>
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On Fri, Nov 14, 2003 at 12:13:00AM -0500, Andrew Pimlott wrote:
> For transparency, I would change the file contents to "updating"
> during an update, instead of the even-odd thing.  I think this will
> make it more obvious to people how to use it properly.

we've more solutions now. The file contents to "updating" would work too
but I believe it would be by far the most complicated, the md5sum has
the advantage of valiating the file contents too and it only requires 1
file update to be atomic, no matter how the upload of the data paylod
happens, so I tend to like it most even if it only works
probabilitsically (but it's sure safe enough).

However I understand Larry has no real interest in helping us to
rsync a known to be coherent copy of the repository (very understandable
from his own business standpoint), so I guess this is all wasted time,
and we've to live with an heuristic like:

       1:rsync
	sleep 60
	rsync -> if something changed goto 1

I doubt Peter can provide the coherency guarantee with the md5sum on his
side, unless it's Peter fetching the update of the scm data, and not the
other way around.
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