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Re: [Qemu-block] [PATCH V2 2/8] qapi: add compress parameters to Qcow2 B


From: Kevin Wolf
Subject: Re: [Qemu-block] [PATCH V2 2/8] qapi: add compress parameters to Qcow2 Blockdev options
Date: Mon, 10 Jul 2017 15:30:38 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

Am 10.07.2017 um 15:24 hat Peter Lieven geschrieben:
> Am 10.07.2017 um 15:10 schrieb Kevin Wolf:
> >Am 29.06.2017 um 12:57 hat Peter Lieven geschrieben:
> >>Signed-off-by: Peter Lieven <address@hidden>
> >>---
> >>  qapi/block-core.json | 44 +++++++++++++++++++++++++++++++++++++++++++-
> >>  1 file changed, 43 insertions(+), 1 deletion(-)
> >How does this make sense as a runtime option? What would happen if the
> >image contains one compression format and I specify another one on the
> >command line or in blockdev-add?
> >
> >Shouldn't it just be a create-time option and when you run qemu, it uses
> >whatever format that image has?
> 
> I was asked to add it here. It is indeed only a create option and has
> no other effect.

But if it's only a create option, why is it added to blockdev-add?

Kevin



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