rsync - Oct 2008 - DO NOT REPLY [Bug 5804] New: Make atomic-rsync atomic

https://bugzilla.samba.org/show_bug.cgi?id=5804

           Summary: Make atomic-rsync atomic
           Product: rsync
           Version: 3.1.0
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: minor
          Priority: P3
         Component: core
        AssignedTo: wayned@samba.org
        ReportedBy: matt@mattmccutchen.net
         QAContact: rsync-qa@samba.org


The support/atomic-rsync script is not actually atomic because it moves the old
destination directory out of place and then moves the updated one into place. 
Make it atomic by having the destination path be a symlink to the actual tree
and atomically replacing this symlink when an updated tree is ready.


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https://bugzilla.samba.org/show_bug.cgi?id=5804


wayned@samba.org changed:

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




------- Comment #1 from wayned@samba.org  2008-10-11 11:34 CST -------
The script now supports this if the user has setup the supplied destination as
a symlink to a directory that ends in -1 or -2.  i.e.:

mkdir /tmp/dest-1
ln -s dest-1 /tmp/dest
atomic-rsync -av /tmp/src/ /tmp/dest/

That would end up with /tmp/dest symlinked to the new /tmp/dest-2 dir.  A
re-run of the atomic-rsync command would replace the /tmp/dest-1 dir and change
the symlink back.  Etc.


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https://bugzilla.samba.org/show_bug.cgi?id=5804


matt@mattmccutchen.net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |VERIFIED




------- Comment #2 from matt@mattmccutchen.net  2008-10-11 13:42 CST -------
Looks good!  Thanks!


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