rsync - Nov 2009 - DO NOT REPLY [Bug 6927] New: Add a --fat option to ignore 1-second time diffs, ownership, hard links, symlinks, etc.

https://bugzilla.samba.org/show_bug.cgi?id=6927

           Summary: Add a --fat option to ignore 1-second time diffs,
                    ownership, hard links, symlinks, etc.
           Product: rsync
           Version: 3.1.0
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P3
         Component: core
        AssignedTo: wayned at samba.org
        ReportedBy: jasonspiro4 at gmail.com
         QAContact: rsync-qa at samba.org


Please add a --fat option to rsync.  This option should cause the following:

*  Rsync should ignore files whose times differ by one second
*  Maybe it should also ignore files whose times differ by exactly 3600 or 3601
seconds too.  This would help when rsyncing files created near the time of the
daylight savings time switchover.
*  Ignore ownership, hard links, symlinks, etc.  This will reduce useless
errors shown.  Also it will prevent rsync returning an error exit code when
nothing bad actually happened.

Please credit Kevin Kolb <http://www.sanitarium.net; email hidden to prevent
spam> in your ChangeLog if you implement this.  He came up with most of the
ideas above.  You can also credit me, Jason Spiro <http://www.jspiro.com>,
if
you like.


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https://bugzilla.samba.org/show_bug.cgi?id=6927





------- Comment #1 from jasonspiro4 at gmail.com  2009-11-24 22:20 CST -------
Typo.  I meant "Please credit Kevin Korb <http://www.sanitarium.net;
email
hidden to prevent spam>".  That's Korb with a letter "r". 
Kevin, I apologize
for that.


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------- Comment #2 from matt at mattmccutchen.net  2009-11-28 00:20 CST -------
This could probably be implemented as a popt alias rather than in the rsync
program itself.  Some specific comments:

(In reply to comment #0)
> *  Maybe it should also ignore files whose times differ by exactly 3600 or
3601
> seconds too.  This would help when rsyncing files created near the time of
the
> daylight savings time switchover.
That is a hack.
> *  Ignore ownership, hard links, symlinks, etc.  This will reduce useless
> errors shown.  Also it will prevent rsync returning an error exit code when
> nothing bad actually happened.
Realize that the default is to ignore all of those things, so their inclusion
in --fat would be useful only to override -a.  Some people seem to get in the
habit of using -a all the time regardless of whether they really want the
options it contains.

I'm not interested in having --fat in the main version of rsync, but the
decision is Wayne's.


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https://bugzilla.samba.org/show_bug.cgi?id=6927

Wayne Davison <wayned at samba.org> changed:

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

--- Comment #3 from Wayne Davison <wayned at samba.org> 2011-12-24
20:49:47 UTC ---
I personally would recommend users that want this add their own popt alias to
their ~/.popt (or /etc/popt) file.  e.g.:

rsync alias --fat --modify-window=1 --no-o --no-g --no-H --no-l

That would let you use:

rsync -aiv --fat foo bar

(Which makes the --no-* overrides turn things off in -a since --fat follows
-a.)  That doesn't do anything for the DST glitch, but I don't think
rsync
should try to solve that issue.

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