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Re: [Qemu-devel] [PATCH] qemu-img rebase: allow backing file to be speci
From: |
Christoph Hellwig |
Subject: |
Re: [Qemu-devel] [PATCH] qemu-img rebase: allow backing file to be specified as '-' |
Date: |
Tue, 23 Oct 2012 18:41:09 +0200 |
User-agent: |
Mutt/1.5.17 (2007-11-01) |
On Mon, Oct 15, 2012 at 12:07:37PM -0600, Eric Blake wrote:
> On 10/15/2012 11:29 AM, Alex Bligh wrote:
> > This patch allows qemu-img rebase to rebase an image to
> > have no backing file, as opposed to merely allowing it to
> > rebase to an existing backing file.
>
> You can already do that by rebasing to the empty string. And it is
> feasible (although unlikely) to have a file named '-', where your patch
> would make it impossible to use that file directly (although you could
> still use './-'). NACK.
Also - is often used to tell tools that expect a file argument to use
stdin/out. Something that would be quite useful for some qemu-img subcommands.