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Re: [Qemu-devel] [PATCH 6/8] blockdev: Allow image files to auto-enable

From: Kevin Wolf
Subject: Re: [Qemu-devel] [PATCH 6/8] blockdev: Allow image files to auto-enable streaming
Date: Fri, 29 Apr 2011 14:20:58 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20101027 Fedora/3.0.10-1.fc12 Thunderbird/3.0.10

Am 27.04.2011 15:27, schrieb Stefan Hajnoczi:
> Image files that having streaming enabled will automatically begin
> streaming when opened.
> Signed-off-by: Stefan Hajnoczi <address@hidden>

Hm... I wasn't really happy about images that do copy on read even if I
didn't tell qemu so on the command line. Now they can start to copy data
and use up my internet connection even without the guest really
accessing the data. This seems to be one step more that I find rather

Anyway, same as for copy on read: While we can discuss _allowing_ it in
backing files, it's definitely not suitable as a primary interface.


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