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Re: [RFC 0/4] mirror: implement incremental and bitmap modes


From: Fiona Ebner
Subject: Re: [RFC 0/4] mirror: implement incremental and bitmap modes
Date: Mon, 4 Mar 2024 08:50:30 +0100
User-agent: Mozilla Thunderbird

Am 01.03.24 um 16:46 schrieb Vladimir Sementsov-Ogievskiy:
> On 01.03.24 18:14, Fiona Ebner wrote:
>> Am 01.03.24 um 16:02 schrieb Vladimir Sementsov-Ogievskiy:
>>>>> About documentation: actually, I never liked that we use for backup
>>>>> job
>>>>> "MirrorSyncMode". Now it looks more like "BackupSyncMode", having two
>>>>> values supported only by backup.
>>>>>
>>>>> I'm also unsure how mode=full&bitmap=some_bitmap differs from
>>>>> mode=bitmap&bitmap=some_bitmap..
>>>>>
>>>>
>>>> With the current patches, it was an error to specify @bitmap for other
>>>> modes than 'incremental' and 'bitmap'.
>>>
>>> Current documentation says:
>>>    # @bitmap: The name of a dirty bitmap to use.  Must be present if
>>> sync
>>>    #     is "bitmap" or "incremental". Can be present if sync is "full"
>>>    #     or "top".  Must not be present otherwise.
>>>    #     (Since 2.4 (drive-backup), 3.1 (blockdev-backup))
>>>
>>>
>>
>> This is for backup. The documentation (and behavior) for @bitmap added
>> by these patches for mirror is different ;)
> 
> I meant backup in "I'm also unsure", just as one more point not consider
> backup-bitmap-API as a prototype for mirror-bitmap-API.
> 

Oh, I see. Sorry for the confusion!

Best Regards,
Fiona




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