File rename detection?

[Alberto Accomazzi]

I have a feeling that the problem of file-renaming does not have a good 
solution in general, but it may be possible for people to come up with a 
rule-based or pattern-based algorithm that works for their particular 
environment (e.g. I use emacs so I'd want rsync to check file.c~ when 
trying to match file.c).

Anyway, I thought I'd mention that there is still a patch in the rsync 
source tree that was submitted a long time ago to attempt a "fuzzy" 
match on file names (patches/rusty-fuzzy.diff). It doesn't patch 
correctly on the current sources, BTW.


-- Alberto


On Wed, Jan 28, 2004 at 05:12:04PM -0800, jw schultz wrote:

 >> On Thu, Jan 29, 2004 at 11:42:12AM +1100, Donovan Baarda wrote:
 >
 >>> > On Thu, 2004-01-29 at 06:27, jw schultz wrote:
 >>
 >>>> > > On Wed, Jan 28, 2004 at 09:06:52PM +0300, ??????? ???????? wrote:
 >>>
 >>>>> > > > Hello!
 >>>>> > > >
 >>>>> > > > As I was found rsync do not detect file renaming. If I just 
copy my
 >>>>> > > > backup.0.tgz (many Mbytes in size having it's md5) to 
backup.1.tgz
 >>>>> > > > (which will be equial in size and md5) it will be the same file
 >>>>> > > > in fact...
 >>>>> > > >
 >>>>> > > > Rsync will delete old file (backup.0.tgz) on the receiving 
side and
 >>>>> > > > download new one (backup.1.tgz). I do not think there are any
 >>>>> > > > difficulties to detect this situation and follow the 
natural way:
 >>>>> > > > just rename the file on the receiving side.
 >>>>> > > >
 >
 >>
 >>
 >> In most cases it is reasonable to adjust file naming schemes
 >> to use less ephemeral names thereby avoiding the problem
 >> altogether.



-- 

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Alberto Accomazzi, NASA Astrophysics Data System    http://ads.harvard.edu
Harvard-Smithsonian Center for Astrophysics     http://cfa-www.harvard.edu
60 Garden St, MS 31, Cambridge, MA 02138, USA   aaccomazzi at cfa.harvard.edu
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