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Re: [Qemu-devel] [PATCH v4 3/8] block: add drive-backup QMP command
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH v4 3/8] block: add drive-backup QMP command |
Date: |
Thu, 16 May 2013 13:11:40 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130402 Thunderbird/17.0.5 |
On 05/16/2013 02:36 AM, Stefan Hajnoczi wrote:
> @drive-backup
>
> Start a point-in-time copy of a block device to a new destination. The
> status of ongoing drive-backup operations can be checked with
> query-block-jobs where the BlockJobInfo.type field has the value 'backup'.
> The operation can be stopped before it has completed using the
> block-job-cancel command.
>
> @device: the name of the device whose writes should be mirrored.
>
> @target: the target of the new image. If the file exists, or if it
> is a device, the existing file/device will be used as the new
> destination. If it does not exist, a new file will be created.
>
> @format: #optional the format of the new destination, default is to
> probe if @mode is 'existing', else the format of the source
>
> @mode: #optional whether and how QEMU should create a new image, default is
> 'absolute-paths'.
>
> @speed: #optional the maximum speed, in bytes per second
>
> Returns: nothing on success
> If @device is not a valid block device, DeviceNotFound
>
> Since 1.6
>
> Signed-off-by: Stefan Hajnoczi <address@hidden>
> ---
> blockdev.c | 92
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> qapi-schema.json | 32 ++++++++++++++++++++
> qmp-commands.hx | 37 +++++++++++++++++++++++
> 3 files changed, 161 insertions(+)
Reviewed-by: Eric Blake <address@hidden>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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