Re: [PATCH 3/4] qemu: managedsave: Add support for compressing managed save images

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On Wed, Oct 09, 2013 at 06:31:31PM +0200, Peter Krempa wrote:
> The regular save image code has the support to compress images using a
> specified algorithm. This was not implemented for managed save although
> it shares most of the backend code.
> ---
>  src/qemu/qemu.conf     |  6 ++++++
>  src/qemu/qemu_conf.c   |  2 ++
>  src/qemu/qemu_conf.h   |  1 +
>  src/qemu/qemu_driver.c | 23 +++++++++++++++++++++--
>  4 files changed, 30 insertions(+), 2 deletions(-)
> 
> diff --git a/src/qemu/qemu.conf b/src/qemu/qemu.conf
> index 5fd6263..7cf67df 100644
> --- a/src/qemu/qemu.conf
> +++ b/src/qemu/qemu.conf
> @@ -278,8 +278,14 @@
>  # the requested compression program can't be found, this falls
>  # back to "raw" compression.
>  #
> +# managedsave_image_format is used when a domain is saved to a location managed
> +# by libvirt for example by using 'virsh managedsave'.  It is an error if the
> +# specified format isn't valid, or the requested compression program can't be
> +# found.
> +#
>  #save_image_format = "raw"
>  #dump_image_format = "raw"
> +#managedsave_image_format = "raw"

I'm wondering if we could justifiably just use the existing 'save_image_format'
for managed save too.

dump needed a separate option since that's a clearly semantically different
API set, but save vs managed save is basically just API sugar, so I feel
we could just use the same config option.

Daniel
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