rsync - Apr 2006 - Rsync decides to copy all old files to WinXP based server

Hi,
I've been using rsync to create backup copies of all my data files on my 
Linux laptop to my Windows XP Home based desktop for about 6 months 
now.  Been working as it should, copying only files that changed since 
the last backup.  The first backup I ran after the time change to 
Daylight Saving Time it wanted to copy all of the files regardless of 
the timestamp.  It copied old files that had not changed as well as the 
files that had changed.  All of the timestamps on the destination ended 
up correctly set after the copy occurred but the appeared to be the same 
before the copy began as well.  I am stumped.

I don't know what the system time has to do with it seeing as it is 
comparing file timestamps.

Thanks for any suggestions.
Alex

-- 
Ourwoods.org
Charlottesville, Virginia

Alex Janssen writes:
> I've been using rsync to create backup copies of all my data files on
my
> Linux laptop to my Windows XP Home based desktop for about 6 months 
> now.  Been working as it should, copying only files that changed since 
> the last backup.  The first backup I ran after the time change to 
> Daylight Saving Time it wanted to copy all of the files regardless of 
> the timestamp.  It copied old files that had not changed as well as the 
> files that had changed.  All of the timestamps on the destination ended 
> up correctly set after the copy occurred but the appeared to be the same 
> before the copy began as well.  I am stumped.
> 
> I don't know what the system time has to do with it seeing as it is 
> comparing file timestamps.
FAT file systems store time stamps in local time, so they change
with DST.  See JW Schultz's excellent write up:

    http://www.cygwin.com/ml/cygwin/2003-10/msg00995.html

Craig

On Tue, Apr 04, 2006 at 12:12:32AM -0400, Alex Janssen
wrote:
> The first backup I ran after the time change to Daylight Saving Time
> it wanted to copy all of the files regardless of the timestamp.
Check out this excellent write-up of the MS Windows brain damage that
causes this in this old message (from the much-missed J.W.):

    http://www.cygwin.com/ml/cygwin/2003-10/msg00995.html

There are suggestions contained therein that describe how to avoid the
problem in the future (for those that can't switch to a better OS).

..wayne..