Re: [Qemu-devel] [PULL 26/42] drive-backup: added support for data compression

[Eric Blake]

On 09/05/2016 01:13 PM, Kevin Wolf wrote:
> From: Pavel Butsykin <address@hidden>
> 
> The idea is simple - backup is "written-once" data. It is written block
> by block and it is large enough. It would be nice to save storage
> space and compress it.
> 
> The patch adds a flag to the qmp/hmp drive-backup command which enables
> block compression. Compression should be implemented in the format driver
> to enable this feature.
> 

> +++ b/qapi/block-core.json
> @@ -898,6 +898,9 @@
>  #          Must be present if sync is "incremental", must NOT be present
>  #          otherwise. (Since 2.4)
>  #
> +# @compress: #optional true to compress data, if the target format supports 
> it.
> +#            (default: false) (since 2.7)

This missed 2.7; we need a followup patch to adjust it to 2.8.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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