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From: Rob Landley <rob@landley.net>
To: qemu-devel@nongnu.org
Cc: Luke -Jr <luke@dashjr.org>
Subject: Re: [Qemu-devel] copy on write-but-no-change
Date: Tue, 11 Sep 2007 01:47:16 -0500	[thread overview]
Message-ID: <200709110147.16434.rob@landley.net> (raw)
In-Reply-To: <200709071040.15626.luke@dashjr.org>

On Friday 07 September 2007 10:40:15 am Luke -Jr wrote:
> I don't believe it's possible to make holes in sparse files explicitly.
> The libc/OS only support it transparently when you jump to the end of a
> file and begin writing there.

Actually, I believe it should finally show up in the 2.6.23 kernel.  Look for 
fadvise(FA_DEALLOCATE)

http://lwn.net/Articles/226710/

Rob
-- 
"One of my most productive days was throwing away 1000 lines of code."
  - Ken Thompson.

      reply	other threads:[~2007-09-11  6:47 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-06 22:55 [Qemu-devel] copy on write-but-no-change Lapo Luchini
2007-09-07 15:40 ` Luke -Jr
2007-09-11  6:47   ` Rob Landley [this message]

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