On 07/25/2017 09:41 AM, Peter Lieven wrote:
> Signed-off-by: Peter Lieven <p...@kamp.de>
> ---
> qapi/block-core.json | 40 ++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 40 insertions(+)
>
> diff --git a/qapi/block-core.json b/qapi/block-core.json
> index 833c602..f652206 100644
> --- a/qapi/block-core.json
> +++ b/qapi/block-core.json
> @@ -2455,6 +2455,46 @@
> '*encrypt': 'BlockdevQcow2Encryption' } }
>
> ##
> +# @Qcow2CompressFormat:
> +#
> +# @deflate: standard zlib deflate compression
> +#
> +# Since: 2.11
> +##
> +{ 'enum': 'Qcow2CompressFormat',
> + 'data': [ 'deflate' ] }
> +
> +##
> +# @Qcow2CompressDeflate:
> +#
> +# @level: specifies the compression level. 0 = default compression,
> +# 1 = fastest compression, 9 = best compresion
By putting level here instead of in the common base type, you'll have to
re-implement it for each compression type - but that's also okay since
they (might) have different ranges of valid levels.
s/compresion/compression/
maybe: 0 = default compression (same as level 6), 1=...
> +# @window-size: specifies the window size used for deflate compression.
> +# 8...15 = window size of 2^8 to 2^15 byte (default)
15 is the new default, but it might be worth an explicit mention that a
window of 12 is required for back-compat to older images.
> +#
> +# Since: 2.11
> +##
> +{ 'struct': 'Qcow2CompressDeflate',
> + 'data': { '*level': 'uint8',
> + '*window-size': 'uint8' } }
> +
> +##
> +# @Qcow2Compress:
> +#
> +# Specifies the compression format and compression level that should
> +# be used for compressed Qcow2 clusters.
> +#
> +# @format: specifies the compression format to use. (defaults to zlib)
s/zlib/deflate/
> +#
> +# Since: 2.11
> +##
> +{ 'union': 'Qcow2Compress',
> + 'base': { 'format': 'Qcow2CompressFormat' },
> + 'discriminator': 'format',
> + 'data': { 'deflate': 'Qcow2CompressDeflate' } }
> +
> +
> +##
> # @BlockdevOptionsSsh:
> #
> # @server: host address
>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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