rsync - Oct 2011 - [Bug 8513] New: files from local filesystem on source written to different filesystem on dest despite --one-file-system

https://bugzilla.samba.org/show_bug.cgi?id=8513

           Summary: files from local filesystem on source written to
                    different filesystem on dest despite --one-file-system
           Product: rsync
           Version: 3.1.0
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: core
        AssignedTo: wayned at samba.org
        ReportedBy: terry_n_brown at yahoo.com
         QAContact: rsync-qa at samba.org


doing something like

    rsync -e "ssh -p $PORT" \
        --ignore-errors \
        --only-write-batch=$STORAGE/$TS""_$NAME.rsb \
        --archive \
        --one-file-system \
        --verbose \
        --progress \
        --delete \
        $SOURCE/ \
        $TARGET:$SOURCE/

On the source, due to historical accident, there are *local* files like

.../cifs/data1/cdrive/autoexec.bat
.../cifs/data1/cdrive/http/setup.ini

and on dest. .../cifs/data1/cdrive is a windows share on another filesystem /
machine, but the --read-batch version of the above, even with --one-file-system
flag, files on the other filesystem are still overwritten.

Seems --one-file-system should never cross file system boundaries.

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https://bugzilla.samba.org/show_bug.cgi?id=8513

Wayne Davison <wayned at samba.org> changed:

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

--- Comment #1 from Wayne Davison <wayned at samba.org> 2011-10-08
16:38:15 UTC ---
That's not what --one-filesystem limits.  The man page explains it fairly
well:

This tells rsync to avoid crossing a filesystem boundary when recursing.  This
does not limit the user?s ability to specify items to copy from multiple
filesystems, just rsync?s recursion through the hierarchy  of  each directory 
that  the  user  specified, and also the analogous recursion on the receiving
side during deletion.

So, no limit is place on files that make it into the transfer -- they get
transferred.  While it would be possible to add a destination check to see if a
particular existing file is on a different filesystem from the starting one,
that is not something that I plan to add.

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