Rsync synchronizes unchanged files

tim.conway at tim.conway at
Fri Sep 27 20:43:01 EST 2002

Sorry for the delay in answering.  I got interrupted and forgot to 
Most MS operating systems use 2-second granularity in timestamps, so that 
mtime an odd timestamp gets stored as an even one, and thus never matches. 
 That's why the developers added the --modify-window directive.
SunOS 5.7           Last change: 25 Jan 2002                    7

User Commands                                            rsync(1)

          When comparing two timestamps rsync treats  the  times-
          tamps  as  being  equal if they are within the value of
          modify_window. This is normally zero, but you may  find
          it  useful to set this to a larger value in some situa-
          tions. In particular,  when  transferring  to/from  FAT
          filesystems  which  cannot  represent  times  with  a 1
          second resolution this option is useful.

Tim Conway
conway.tim at reorder name and reverse domain
303.682.4917 office, 303.921.0301 cell
Philips Semiconductor - Longmont TC
1880 Industrial Circle, Suite D
Longmont, CO 80501
Available via SameTime Connect within Philips, caesupport2 on AIM
"There are some who call me.... Tim?"

Derek Simkowiak <dereks at>
Sent by: rsync-admin at
09/27/2002 11:32 AM

        To:     Lukas Kubin <kubin at>
        cc:     <rsync at>
(bcc: Tim Conway/LMT/SC/PHILIPS)
        Subject:        Re: Rsync synchronizes unchanged files

> P.S.: The purpose of this work is to maintain a computer lab running
> Windows XP and other systems.

                 Get the latest version.  From :
rsync 2.5.5 "Snowy River" (2 April 2002)
* Fix --whole-file problem that caused it to be the default even
      for remote connections.  (Martin Pool, Frank Schulz)


                 Could this be the problem?  Please indicate your rsync 
version and
more information, such as log files, etc.


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