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

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On 10/09/2013 10:33 AM, Daniel P. Berrange wrote:
> 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.

Agreed.

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

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