linux-kernel - Re: Ext3 vs NTFS performance

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Date:	Sat, 5 May 2007 10:59:52 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Michael Tokarev <mjt@....msk.ru>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Anton Altaparmakov <aia21@....ac.uk>,
	Bernd Eckenfels <ecki@...a.inka.de>,
	linux-kernel@...r.kernel.org
Subject: Re: Ext3 vs NTFS performance

On Fri, May 04, 2007 at 07:49:13PM +0400, Michael Tokarev wrote:
> How about providing a way to stop kernel (or filesystem) to make gaps
> in files instead?  Like some ioctl(fd, FS_NOGAPS, 1) -- pretty much
> like 'doze has, just the opposite (on windows, this flag is "on" by
> default).

Giving filesystems non-hole semantics is non-trivial.  Not allowing
for holes creates a lot of complications in unix-like filesystems.

> But the main point is that samba has to keep track of things which it
> doesn't do now, and those things becomes.. interesting (difficult if
> at all possible to track) in multi-user/concurrent-writes environment.

Samba is there to deal with a braindead protocol and braindead clients,
so let it continue to do that.  No need to push this into the kernel.

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