rsync - Feb 2013 - [Bug 9657] New: --compare-dest results inconsistent between major 2 and major 3

https://bugzilla.samba.org/show_bug.cgi?id=9657

           Summary: --compare-dest results inconsistent between major 2
                    and major 3
           Product: rsync
           Version: 3.0.9
          Platform: x64
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: core
        AssignedTo: wayned at samba.org
        ReportedBy: phil at croftvillas.com
         QAContact: rsync-qa at samba.org


Hi

I use the compare dest option to calculate a residual difference directory of
files.. this has been very successful.

I noticed when running on a box with version 3.0.9 of rsync that this feature
was giving me different results to before.

Re-created on my Mac thus:

Note: The compare-dest test passed for both builds

phillyair:rsync philipc$ ls
rsync-2.6.9    rsync-3.0.9
phillyair:rsync philipc$ mkdir -p compare/src1 compare/src2
phillyair:rsync philipc$ cd compare/
phillyair:compare philipc$ touch src1/file1 src1/file2
phillyair:compare philipc$ touch src2/file1 src2/file2 src2/file3
phillyair:compare philipc$ ../rsync-2.6.9/rsync -av --size-only
--compare-dest=../src1/ ./src2/ dest1
building file list ... done
created directory dest1
./
file3

sent 165 bytes  received 60 bytes  450.00 bytes/sec
total size is 0  speedup is 0.00

phillyair:compare philipc$ rm -fr dest1
phillyair:compare philipc$ ../rsync-3.0.9/rsync -av --size-only
--compare-dest=../src1/ ./src2/ dest1
sending incremental file list
created directory dest1
./
file1
file2
file3

sent 118 bytes  received 40 bytes  316.00 bytes/sec
total size is 0  speedup is 0.00

I would expect just the difference to be in the dest directory as is the case
for rsync-2.6.9.

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https://bugzilla.samba.org/show_bug.cgi?id=9657

Wayne Davison <wayned at samba.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |WORKSFORME

--- Comment #1 from Wayne Davison <wayned at samba.org> 2013-05-27
00:05:54 UTC ---
There have been a lot of bug fixes in compare dest over time, including proper
determination of files not really being equal due to things like permission
differences, xattr differences, etc.  (All depending on what you tell rsync to
preserve.)  I'd imagine this is one of the instances that earlier rsyncs got
wrong.  e.g., in your test case, you'd need to specify --no-t if you
don't want
a different mtime to cause the files to be unequal.

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