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Subject: Re: [bug, 2.5.29, IDE] partition table corruption?
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: martin@dalecki.de
Cc: Ingo Molnar <mingo@elte.hu>, "Adam J. Richter" <adam@yggdrasil.com>,
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On Thu, 2002-08-08 at 13:18, Marcin Dalecki wrote:
> I say it n-th time already dd if=/dev/hda of=/dev/hdb should give
> a prefect sector by sector disk clone.

The specific case of the hack for EZdisk I have no issue with the
general problem I do

> The bugs should be fixed in lilo and not worked around in the kernel.
> We have the goal (and in fact obligation for scalability issues) to move
> partition scanning out of the kernel space.

Partition handling doesn't show up in any scalability benchmarks. Show
me an IBM 8 way with partition reading showing up in lockmeter
 
> Did you ever bother looking the the function in question?
Yes

> Did you ever look at the missordered code in lilo I cited here?

Did you ever think that it 
 
> It did contain 'heuristics" which stopped to annoy people just becouse
> many have developed the immediate reflex of always adding the linear
> parameter during lilo configuration already a very very long time ago
> becouse anything else doesn't make much sense and disks have passed the 
> 512MB or even 4G barrier quite a time ago.

So fix the heuristics to the official algorithm. Thats a good thing to
do and test in a development kernel tree.

And btw lots of people still use < 512Mb and < 4G disks. No doubt you'd
prefer your kernel only ran on a pentiumII or higher

Alan

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