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Re: LogFS merge

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To: Willy Tarreau <w@...>
Cc: Jörn Engel <joern@...>, Stephen Rothwell <sfr@...>, Andrew Morton <akpm@...>, David Woodhouse <dwmw2@...>, Arnd Bergmann <arnd@...>, <linux-kernel@...>
Date: Saturday, May 3, 2008 - 1:16 pm

On Sat, 3 May 2008, Willy Tarreau wrote:

The real issue for me wrt a filesystem is the on-disk layout.

If we know that on-disk structures need change, we shouldn't merge it. It 
doesn't matter if that can be worked around with some backwards- 
compatibiltiy flag: we should simply not encourage that kind of behaviour. 
It would be much much better to just get a layout that is as final as 
possible and avoid the "there are two different formats, because the first 
format was known to be broken" issue.

Will extensions happen and add features anyway? Probably. But that's 
different from merging something knowing that the on-disk format will 
change.

		Linus
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Messages in current thread:
LogFS merge, Jörn, (Fri May 2, 9:32 am)
Re: LogFS merge, Andrew Morton, (Mon May 5, 4:31 pm)
Re: LogFS merge, Andi Kleen, (Fri May 2, 1:29 pm)
Re: LogFS merge, Jörn, (Fri May 2, 5:34 pm)
Re: LogFS merge, Linus Torvalds, (Fri May 2, 1:17 pm)
Re: LogFS merge, Jörn, (Fri May 2, 4:21 pm)
Re: LogFS merge, Linus Torvalds, (Fri May 2, 4:33 pm)
Re: LogFS merge, Jörn, (Fri May 2, 5:31 pm)
Re: LogFS merge, Linus Torvalds, (Fri May 2, 5:39 pm)
Re: LogFS merge, Jörn, (Fri May 2, 5:58 pm)
Re: LogFS merge, Willy Tarreau, (Sat May 3, 3:03 am)
Re: LogFS merge, Linus Torvalds, (Sat May 3, 1:16 pm)
Offtopic to: LogFS merge, David Collier-Brown, (Sat May 3, 1:59 pm)
Re: LogFS merge, Adrian Bunk, (Sat May 3, 5:11 am)
Re: LogFS merge, Pekka Enberg, (Sat May 3, 5:44 am)
Re: LogFS merge, Adrian Bunk, (Sat May 3, 7:06 am)
Re: LogFS merge, Willy Tarreau, (Sat May 3, 5:18 am)
Re: LogFS merge, Adrian Bunk, (Sat May 3, 5:37 am)
Re: LogFS merge, Arnd Bergmann, (Fri May 2, 12:52 pm)
Re: LogFS merge, Jörn, (Fri May 2, 5:47 pm)
Re: LogFS merge, Pekka Enberg, (Fri May 2, 10:49 am)
Re: LogFS merge, Christoph Hellwig, (Fri May 2, 11:31 am)
Re: LogFS merge, Jörn, (Fri May 2, 4:33 pm)
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