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Re: [Qemu-devel] [PATCH v5 06/11] block: add drive-backup QMP command
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] [PATCH v5 06/11] block: add drive-backup QMP command |
Date: |
Wed, 19 Jun 2013 13:07:42 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Am 30.05.2013 um 14:34 hat Stefan Hajnoczi geschrieben:
> @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 which should be copied.
>
> @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
>
> @on-source-error: #optional the action to take on an error on the source,
> default 'report'. 'stop' and 'enospc' can only be used
> if the block device supports io-status (see BlockInfo).
>
> @on-target-error: #optional the action to take on an error on the target,
> default 'report' (no limitations, since this applies to
> a different block device than @device).
>
> Note that @on-source-error and @on-target-error only affect background I/O.
> If an error occurs during a guest write request, the device's rerror/werror
> actions will be used.
>
> Returns: nothing on success
> If @device is not a valid block device, DeviceNotFound
>
> Since 1.6
>
> Signed-off-by: Stefan Hajnoczi <address@hidden>
Reviewed-by: Kevin Wolf <address@hidden>
But what about HMP, the series doesn't seem to have a separate patch to
add a command there?