DO NOT REPLY [Bug 7664] New: --compare-dest hangs

samba-bugs at samba-bugs at
Sun Sep 5 07:47:41 MDT 2010

           Summary: --compare-dest hangs
           Product: rsync
           Version: 3.0.7
          Platform: Other
        OS/Version: Windows NT
            Status: NEW
          Severity: normal
          Priority: P3
         Component: core
        AssignedTo: wayned at
        ReportedBy: francois at
         QAContact: rsync-qa at

hi !

First of all congratulation for rsync, which I use as our main backup tool in
our banking company (ACM).

I am trying to also use rsync to deduplicate files.


cd /
cp -a /bin /bin3
rm -v /bin3/z* /bin3/bas*

#now we will use rsync to build a folder with all files from /bin that are
missing or different in /bin3, using --compare-dest

rm -r /bin.tmp -r; rsync --recursive --links --group --owner --devices
--numeric-ids --delete --delete-excluded --one-file-system
--compare-dest="../bin3" --hard-links --perms --times --size-only "/bin/."
"/bin.tmp" -vv --stats | less

#this hangs!

1) on version 2.6.9 it worked more or less: missing files in bin3 were copied
from bin to bin.tmp except 'zcat' because it was a hardlink to 'gunzip', which
is not missing in bin3.

on version 3.0.3 and 3.0.7 it just hangs

2) secondly and unfortunately, removing the --hard-links option is also making
trouble in 3.0.3 and 3.0.7: it does not hang anymore but it sadly copy all
symlinks, even those that are present in bin3.
on 2.6.9, removing --hard-links option was working correctly and copying ONLY
the missing symlinks.

Thank you for your time.

Francois Scheurer
francois at
Head of Infratructure
Advanced Currency Markets SA

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