rsync of a reflink from OCFS2

[Ben RUBSON]

Yes you're right, rsync would update only a few parts of the file, but  
network usage would be even worst.
The only solution would finally be to have rsync on the target system.

Ben

On 14 Mar, Kevin Korb via rsync wrote:

> --no-whole-file would only make it even worse.  It would have to read
> the remote file over the network in order to do the diff then it would
> write the whole file over the network anyway (--inplace would help a
> little).  Local copies force --whole-file for a good reason.
>
> On 03/14/2018 10:05 AM, Ben RUBSON via rsync wrote:
>> On 14 Mar 2018, Lentes, Bernd via rsync wrote:
>>
>>> ----- On Mar 14, 2018, at 2:19 PM, Ben RUBSON ben.rubson at gmail.com wrote:
>>>
>>>> On 14 Mar 2018, Lentes, Bernd via rsync wrote:
>>>>
>>>>> I would now expect a rsync from the snap would transfer just some megay
>>>>> bytes to the file from the day before.
>>>>> But it doesn't:
>>>>>
>>>>> ha-idg-1:/cluster/guests/servers_alive # time rsync -av --stats
>>>>> sa.raw.snap /mnt/idg-2/SysAdmin_AG_Wurst/backup/cluster/test
>>>>
>>>> Hi Bernd,
>>>>
>>>> When doing rsync locally, diff alg is not involved, this is why file is
>>>> fully transferred.
>>>>
>>>> Ben
>>>
>>> Hi Ben,
>>>
>>> also when the target is a cifs share, it's still considered as local ?
>>
>> Yes as it's mounted locally.
>>
>>> Is there something i can do to get the diff algorithm used ?
>>
>> Perhaps --no-whole-file would do the trick ?
>>
>>> Copying via ssh to the cifs server is unfortunately not possible.
>>>
>>>
>>> Bernd