rsync - Apr 2015 - Skip based on checksum not worked as expected when using with complex filter rules.

On Fri, 17 Apr 2015 23:45:42 -0400, Kevin Korb wrote:
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> So, I am assuming that without --itemize-changes you couldn't tell the
> difference between "I am transferring a file" and "I am
fixing the
> timestamp on a file".
> 
> Even if I am right, you are probably still mis-using --checksum.  When
> you use --checksum you force a checksumming of absolutely everything on
> both ends before anything else happens.  Without --checksum a file with
> a wrong timestamp will be delta-xferred.  A delta-xfer is at worst the
> same as a both side checksum.  If you let it delta-xfer files with wrong
> timestamps that is much faster than --checksum since - --checksum wastes
> time checksumming files that can't possibly have a checksum match.
Yes, with `--checksum' is a time-consuming thing ;-(
> 
> Simply put, if you use --checksum without one of --itemize-changes,
> - --link-dest, or --write-batch you are doing something horribly wrong.
So, I think that use the `-niv' combinations and then do the extract as 
follows:

awk '/^>f/'

Should enuogh for most cases to check the stuff which are need to be 
updated.

Regards
-- 
.: Hongyi Zhao [ hongyi.zhao AT gmail.com ] Free as in Freedom :.

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I still don't see an output from rsync --itemize-changes with an A/B
difference.

On 04/18/2015 12:15 AM, Hongyi Zhao wrote:
> On Fri, 17 Apr 2015 23:45:42 -0400, Kevin Korb wrote:
> 
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>> So, I am assuming that without --itemize-changes you couldn't
>> tell the difference between "I am transferring a file" and
"I am
>> fixing the timestamp on a file".
>> 
>> Even if I am right, you are probably still mis-using --checksum.
>> When you use --checksum you force a checksumming of absolutely
>> everything on both ends before anything else happens.  Without
>> --checksum a file with a wrong timestamp will be delta-xferred.
>> A delta-xfer is at worst the same as a both side checksum.  If
>> you let it delta-xfer files with wrong timestamps that is much
>> faster than --checksum since - --checksum wastes time
>> checksumming files that can't possibly have a checksum match.
> 
> Yes, with `--checksum' is a time-consuming thing ;-(
> 
>> 
>> Simply put, if you use --checksum without one of
>> --itemize-changes, - --link-dest, or --write-batch you are doing
>> something horribly wrong.
> 
> So, I think that use the `-niv' combinations and then do the
> extract as follows:
> 
> awk '/^>f/'
> 
> Should enuogh for most cases to check the stuff which are need to
> be updated.
> 
> Regards
> 
- -- 
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On Sat, 18 Apr 2015 00:39:42 -0400, Kevin Korb wrote:
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> I still don't see an output from rsync --itemize-changes with an A/B
> difference.
What do you mean by saying the above things?  

Do you mean only the `--itemize-changes' is enough for my case?

Or

Do you want to see the output from my case of running on the different 
rsync options?

Regards
-- 
.: Hongyi Zhao [ hongyi.zhao AT gmail.com ] Free as in Freedom :.