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Re: [Qemu-block] [PATCH v2 1/2] qapi: support external bitmaps in block-

From: Eric Blake
Subject: Re: [Qemu-block] [PATCH v2 1/2] qapi: support external bitmaps in block-dirty-bitmap-merge
Date: Mon, 20 May 2019 10:23:48 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1

On 5/17/19 5:45 PM, John Snow wrote:
> On 5/17/19 11:21 AM, Vladimir Sementsov-Ogievskiy wrote:
>> Add new optional parameter making possible to merge bitmaps from
>> different nodes. It is needed to maintain external snapshots during
>> incremental backup chain history.
>> Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
>> ---

>> +# Since: 4.1
>> +##
>> +{ 'alternate': 'BlockDirtyBitmapMergeSource',
>> +  'data': { 'local': 'str',
>> +            'external': 'BlockDirtyBitmap' } }
>> +
> We might be able to use something more generic to name this type of
> thing, but I think such changes are wire compatible, so we can rename it
> to be more generic if we decide to use this for something else in the
> future, so this is good.

Correct - type names are not API, so we can rename them later if it
makes sense.

Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

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