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Re: [Qemu-devel] [Qemu-block] [PATCH v2] qemu-img: Document --force-shar
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] [Qemu-block] [PATCH v2] qemu-img: Document --force-share / -U |
Date: |
Fri, 8 Dec 2017 12:47:48 +0100 |
User-agent: |
Mutt/1.9.1 (2017-09-22) |
Am 08.12.2017 um 10:54 hat Stefan Hajnoczi geschrieben:
> On Fri, Dec 08, 2017 at 09:44:56AM +0800, Fam Zheng wrote:
> > address@hidden --force-share (-U)
> > +
> > +If specified, @code{qemu-img} will open the image with shared permissions,
> > +which makes it less likely to conflict with a running guest's permissions
> > due
> > +to image locking. For example, this can be used to get the image
> > information
> > +(with 'info' subcommand) when the image is used by a running guest. Note
> > that
> > +this could produce inconsistent result because of concurrent metadata
> > changes,
> > +etc.
>
> The documentation isn't clear on whether read-write is supported or just
> read-only.
>
> Also, should it be declared a legacy option right away to discourage
> use in new software?
I don't think this is a legacy option. As long you know what you're
doing, using it is fine.
Kevin
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