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Date: Fri, 17 Jun 2011 09:57:25 +0100
Message-ID: <BANLkTikQB2NF=cWb3c4fJvvtD1AMgB0xqg@mail.gmail.com>
From: Stefan Hajnoczi <stefanha@gmail.com>
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Subject: Re: [Qemu-devel] Image streaming and live block copy
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To: Kevin Wolf <kwolf@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>, Dor Laor <dlaor@redhat.com>, Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>, jes sorensen <jes.sorensen@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>, qemu-devel@nongnu.org, Avi Kivity <avi@redhat.com>, Adam Litke <agl@us.ibm.com>

On Fri, Jun 17, 2011 at 9:36 AM, Kevin Wolf <kwolf@redhat.com> wrote:
> By the way, we'll get problems with the colon syntax. Without -blockdev
> we'll have to invent a new syntax, maybe with brackets:
>
> blkstream:[nbd:localhost]:out.qcow2

Embedding block driver options in filenames is getting worse as time
goes on.  I recently tried to refactor and eliminate
QEMUOptionParameter so that we only use QemuOpts instead of two
different option APIs.  Part of that involves keeping separate
per-block driver (i.e. -blockdev) options lists, which would allow us
to pass proper options to block drivers instead of embedding them in
the filename.

I got stuck because today the protocol and format QEMUOptionParameters
get concatenated in some cases.  Concatenation is not really supported
by QemuOpts :).

Anyway, here's the current state if anyone is interested:
http://repo.or.cz/w/qemu/stefanha.git/commitdiff/b49babb2c8b476a36357cfd7276ca45a11039ca5

Stefan