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Re: [kvm-devel] [Qemu-devel] Re: Storing command line options in images

From: Thiemo Seufer
Subject: Re: [kvm-devel] [Qemu-devel] Re: Storing command line options in images
Date: Mon, 13 Aug 2007 20:39:27 +0100
User-agent: Mutt/1.5.16 (2007-06-11)

Jorge Lucángeli Obes wrote:
> When I read Avi's TODO, I basically thought about getting rid of the
> long command lines I had to store in scripts. I wanted to write that
> command line once, and then forgetting about it, until I needed to
> change it.

Instead of inventing great and wonderfully complicated schemes, the
most sensible way I can think of is to recycle a feature which is now
implemented in the GNU toolchain, and apparently stems from Windows:

  qemu @qemu.cfg

where qemu.cfg is a file which contains the command line arguments.
(This is also low-maintenance, as it allows to re-use the existing
parser. No need for duplicated logic.)

> I wanted an image to be self-contained as much as possible.
> That's what I set to achieve.

Which tends to collect all the complexity in a single piece.
That seems to be the common problem of the option discussed here.

> All that said, I rethought Anthony's idea of storing plain text in the
> image and with proper tools, it can work out.

Requiring "proper tools" doesn't leave much of a point for plain text.


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