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Re: [Qemu-devel] [PATCH v6 for 2.1 10/10] block: add QAPI command to all
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH v6 for 2.1 10/10] block: add QAPI command to allow live backing file change |
Date: |
Thu, 19 Jun 2014 16:37:56 +0800 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Tue, Jun 17, 2014 at 05:53:58PM -0400, Jeff Cody wrote:
> This allows a user to make a live change to the backing file recorded in
> an open image.
>
> The image file to modify can be specified 2 ways:
>
> 1) image filename
> 2) image node-name
>
> Note: this does not cause the backing file itself to be reopened; it
> merely changes the backing filename in the image file structure, and
> in internal BDS structures.
>
> It is the responsibility of the user to pass a filename string that
> can be resolved when the image chain is reopened, and the filename
> string is not validated.
>
> A good analogy for this command is that it is a live version of
> 'qemu-img rebase -u', with respect to changing the backing file string.
>
> Reviewed-by: Eric Blake <address@hidden>
> Signed-off-by: Jeff Cody <address@hidden>
> ---
> blockdev.c | 102
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> qapi/block-core.json | 60 ++++++++++++++++++++++++++++++
> qmp-commands.hx | 74 +++++++++++++++++++++++++++++++++++++
> 3 files changed, 236 insertions(+)
Reviewed-by: Stefan Hajnoczi <address@hidden>
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- Re: [Qemu-devel] [PATCH v6 for 2.1 07/10] block: add ability for block-stream to use node-name, (continued)
- Re: [Qemu-devel] [PATCH v6 for 2.1 00/10] Modify block jobs to use node-names, Stefan Hajnoczi, 2014/06/19
- Re: [Qemu-devel] [PATCH v6 for 2.1 00/10] Modify block jobs to use node-names, Jeff Cody, 2014/06/19
- Re: [Qemu-devel] [PATCH v6 for 2.1 00/10] Modify block jobs to use node-names, Stefan Hajnoczi, 2014/06/23
- Re: [Qemu-devel] [PATCH v6 for 2.1 00/10] Modify block jobs to use node-names, Benoît Canet, 2014/06/23
- Re: [Qemu-devel] [PATCH v6 for 2.1 00/10] Modify block jobs to use node-names, Fam Zheng, 2014/06/23
- Re: [Qemu-devel] [PATCH v6 for 2.1 00/10] Modify block jobs to use node-names, Jeff Cody, 2014/06/24