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Re: [Qemu-devel] [PATCH 0/3] Support streaming to an intermediate layer
From: |
Alberto Garcia |
Subject: |
Re: [Qemu-devel] [PATCH 0/3] Support streaming to an intermediate layer |
Date: |
Fri, 20 Feb 2015 20:05:18 +0100 |
User-agent: |
Mutt/1.5.20 (2009-06-14) |
On Fri, Feb 20, 2015 at 10:34:58AM -0700, Eric Blake wrote:
> > I followed the proposed API from the wiki, which simply adds an
> > additional 'top' parameter to block-stream specifying the image
> > that data is written to:
>
> How does one learn whether qemu is new enough to support this
> mode? Until we add QMP introspection, learning whether an optional
> parameter exists requires attempting the command and seeing a
> different error depending on whether the argument is recognized.
Isn't it possible to just check the QEMU version number?
If not, what's the recommended way to do it?
Thanks,
Berto