rsync based on checksum only

[josephj at main.nc.us]

Wow!  Thanks for making it so easy.  I will try that asap.

Joe

> hello,
>
> I have patched my rsync with both patches, and it works well !
> Using git just for geting the source code is really easy and moreover
> rsync
> source code is not under git... See the project page where you can
> download
> the source code : http://rsync.samba.org/download.html
> There is no risk to break your rsync when building your own you will have
> a
> new binary that will not replace your current one. It will depend on you
> to
> make an alias or not. In your script you will decide if you use your
> current rsync (rsync -a...) or your new build binary
> (/path/to/my/build/rsync - a ...)
>
> Here are the steps (adapt with the correct versions) :
>
> cd ~/my/working/directory
> curl -O http://rsync.samba.org/ftp/rsync/src/rsync-3.0.7.tar.gz
> tar -xzvf rsync-3.0.7.tar.gz
> rm rsync-3.0.7.tar.gz
> curl -O http://rsync.samba.org/ftp/rsync/src/rsync-patches-3.0.7.tar.gz
> tar -xzvf rsync-patches-3.0.7.tar.gz
> rm rsync-patches-3.0.7.tar.gz
> cd rsync-3.0.7
>
> patch -p1 <patches/detect-renamed.diff
> patch -p1 <patches/detect-renamed-lax.diff
>
> Configure, make, install
>
> ./prepare-source
> ./configure
> make
>
> Benjamin ANDRE
>
>
>
> 2012/7/7 <josephj at main.nc.us>
>
>> Let us know if that ever gets merged into the official releases.  I
>> could
>> use that feature.  I download a lot of media files and when I normalize
>> their names, rsync treats them as new files.
>>
>> At this point, I don't want to build my own rsync.  I haven't learned
>> git
>> yet and have to be sure that I don't do anything to compromise rsync for
>> the rest of my system.
>>
>> Joe
>>
>> > hello,
>> >
>> > a patch could help you in the case of a move or rename of a file :
>> >
>> > Patch : --detect-renamed
>> > (1) match in size & modify-time (plus the basename, if possible)
>> > (2) or match in size & checksum (when --checksum was also specified)
>> and
>> > use each match as an alternate basis file to speed up the transfer.
>> >
>> >
>> http://gitweb.samba.org/?p=rsync-patches.git;a=blob;f=detect-renamed.diff;h=c3e6e846eab437e56e25e2c334e292996ee84345;hb=master
>> >
>> > Patch options : --detect-renamed-lax and --detect-moved
>> >
>> http://gitweb.samba.org/?p=rsync-patches.git;a=blob;f=detect-renamed-lax.diff;h=1ff593c8f97a97e8970d43ff5a62dfad5abddd75;hb=master
>> >
>> >
>> > Benjamin ANDRE
>> >
>> >
>> >
>> > 2012/7/5 Matthias Schniedermeyer <ms at citd.de>
>> >
>> >> On 05.07.2012 09:26, Yan Seiner wrote:
>> >> > Is it possible to tell rsync *not* to use file names, date stamps,
>> etc
>> >> and
>> >> > only use the checksum for deciding if a file is the same?
>> >> >
>> >> > the remote machine "normalizes" a set of file names to remove all
>> >> > punctuation marks and forces all file names to lower case.  The
>> files
>> >> > themselves are unchanged.
>> >> >
>> >> > --checksum looks promising but it does not say anything about file
>> >> names:
>> >> >
>> >> > -c, --checksum              Skip based on checksum, not mod-time &
>> >> size
>> >> >
>> >> > Can this be done?
>> >>
>> >> A workaround comes to mind.
>> >>
>> >> MD5/SHA1 (whatever) the files and hardlink them under that name into
>> a
>> >> (hidden) directory.
>> >>
>> >> Then when you rsync with "-H" those hardlinks (All files must be
>> below
>> >> the start-directory) make sure that rsync only has to delete/create
>> >> hardlinks and not copy them again after it had copied it the first
>> time.
>> >>
>> >> I use a similar method for a bunch of big files i have, i hardlink
>> them
>> >> into a hidden directory and when i move the files around rsync only
>> >> deletes/creates hardlinks. When i move the files onto other storage i
>> >> only need to do "find .z -type f -links 1" to find out which files
>> only
>> >> have 1 link. Which means all other hardlinks are gone and i can
>> remove
>> >> that file. ("find .z -type f -links 1 -delete")
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> Bis denn
>> >>
>> >> --
>> >> Real Programmers consider "what you see is what you get" to be just
>> as
>> >> bad a concept in Text Editors as it is in women. No, the Real
>> Programmer
>> >> wants a "you asked for it, you got it" text editor -- complicated,
>> >> cryptic, powerful, unforgiving, dangerous.
>> >>
>> >> --
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>> >>
>> > --
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>>
>>
>>
>