On Wed, 12 Aug 2009 18:12:09 -0400
"Jeffrey J. Kosowsky" <backuppc AT kosowsky DOT org> wrote:

> Steve Blackwell wrote at about 14:33:54 -0400 on Wednesday, August
> 12, 2009:
>  > On Wed, 12 Aug 2009 14:18:04 -0400
>  > "Jeffrey J. Kosowsky" <backuppc AT kosowsky DOT org> wrote:
>  > 
>  > > Steve Blackwell wrote at about 13:27:17 -0400 on Wednesday,
>  > > August 12, 2009:
>  > >  > On Wed, 12 Aug 2009 12:24:04 -0400
>  > >  > "Jeffrey J. Kosowsky" <backuppc AT kosowsky DOT org> wrote:
>  > >  > 
>  > >  > > Steve Blackwell wrote at about 11:18:36 -0400 on Wednesday,
>  > >  > > August 12, 2009:
>  > >  > >  > On Wed, 12 Aug 2009 10:06:37 -0400
>  > >  > >  > "Jeffrey J. Kosowsky" <backuppc AT kosowsky DOT org> wrote:
>  > >  > >  > 
>  > >  > >  > > Steve Blackwell wrote at about 08:49:23 -0400 on
>  > >  > >  > > Wednesday, August 12, 2009:
>  > >  > >  > >  > Backuppc has been behaving strangely lately. This is
>  > >  > >  > >  > another instance.
>  > >  > >  > 
>  > >  > >  > ...
>  > >  > >  > >  > 05:00:06 Running BackupPC_link steve (pid=8901) 
>  > >  > >  > >  > 2009-08-12 05:00:08 BackupPC_link got error -3 when
>  > >  > >  > >  > calling
>  > >  > >  > >  > 
> MakeFileLink(/media/disk/pc/steve/151/f%2f/froot/f.gconf/fdesktop/fgnome/faccessibility/fkeyboard/f%25gconf.xml,
>  > >  > >  > >  > b32585c3cc30b7ebb556d335a08554e3, 1)
>  > >  > >  > >  > 
>  > >  > >  > >  > followed by 100,000+ of the same error on different
>  > >  > >  > >  > files
>  > >  > >  > >  > 
>  > >  > >  > >  > What is going on here?
>  > >  > >  > >  > 
>  > >  > >  > > 
>  > >  > >  > > Error -3 means that calling the perl function link
>  > >  > >  > > (between a file in the pool and a name in the pc tree)
>  > >  > >  > > failed.
>  > >  > >  > > 
>  > >  > >  > > Try manually doing something like the following from
>  > >  > >  > > the command line: link
>  > >  > >  > > b32585c3cc30b7ebb556d335a08554e3 
> /media/disk/pc/steve/151/f%2f/froot/f.gconf/fdesktop/fgnome/faccessibility/fkeyboard/f%25gconf.xml
>  > >  > >  > 
>  > >  > >  > Where do I need to be to run this? 
>  > >  > > 
>  > >  > > >From the command line anywhere. Just type the command
>  > >  > > >as-is.
>  > >  > > Actually type it as:
>  > >  > > su -u backuppc link ...
>  > >  > > 
>  > >  > > so that it runs as user 'backuppc'
>  > >  > > If it works, you can undo it by typing:
>  > >  > > rm 
> /media/disk/pc/steve/151/f%2f/froot/f.gconf/fdesktop/fgnome/faccessibility/fkeyboard/f%25gconf.xml
>  > >  > > (assuming the file didn't exist previously)
>  > >  > 
>  > >  > su doesn't have a -u option.
>  > >  > 
>  > > 
>  > > run: sudo -u backuppc
>  > > or su backuppc -c "link..."
>  > 
>  > # sudo -u backuppc link
>  > b32585c3cc30b7ebb556d335a08554e3 
> /media/disk/pc/steve/151/f%2f/froot/f.gconf/fdesktop/fgnome/faccessibility/fkeyboard/f%25gconf.xml
>  > link: cannot create link
>  > 
> `/media/disk/pc/steve/151/f%2f/froot/f.gconf/fdesktop/fgnome/faccessibility/fkeyboard/f%25gconf.xml'
>  > to `b32585c3cc30b7ebb556d335a08554e3': No such file or directory
>  > 
>  > 
>  > Jeffrey, I'm now thinking that two backups have somehow been
>  > scheduled at the same. See the Les Miskell thread.
>  > 
>  > Steve
>  > 
> 
> I don't know. I am perplexed since the code that is creating the error
> code '3' is as follows (from MakeFileLink in Lib.pm):
> 
>     return -1 if ( !-f $name );
>     for ( $i = -1 ; ; $i++ ) {
>         return -2 if ( !defined($rawFile = $bpc->MD52Path($d,
>     $compress)) );
>         $rawFile .= "_$i" if ( $i >= 0 );
>         if ( -f $rawFile ) {
>             if ( (stat(_))[3] < $bpc->{Conf}{HardLinkMax}
>                     && !compare($name, $rawFile) ) {
>                 unlink($name);
>                 return -3 if ( !link($rawFile, $name) );
> 
> 
> Now:
>       $name exists (per the test in the first line)
>       $rawFile exists (per the test in line 6)
> yet the link fails a couple of lines later.
> 
> So unless there is an incredibly precise race condition and assuming
> links work on your machine, the 'link' in the final line should
> succeed. It is hard to believe that there could be a repeatable race
> condition with another backup that is so precise that a file exists in
> one line and then no longer exists just a couple of simple lines of
> perl code later.
> 
> I'm still wondering whether there is some problem with
> linking/unlinking on your computer. So the problem is either that the
> unlink (i.e., delete) fails in the next to last line or the link fails
> in the last line. You may also want to look at ownership/permissions
> in your pc tree to make sure that the relevant files and directories
> are writable by user backuppc.
> 
> Also, why don't you try re-running the manual link line that I gave
> you but this time link against a known *existing* (random) pool file.
> Also try something like:
> 
> su backuppc -c
> "touch 
> /media/disk/pc/steve/151/f%2f/froot/f.gconf/fdesktop/fgnome/faccessibility/fkeyboard/tempfile"
> su backuppc -c
> "rm 
> /media/disk/pc/steve/151/f%2f/froot/f.gconf/fdesktop/fgnome/faccessibility/fkeyboard/tempfile"

su backuppc -c doesn't work but...
# sudo -u backuppc
touch 
/media/disk/pc/steve/151/f%2f/froot/f.gconf/fdesktop/fgnome/faccessibility/fkeyboard/tempfile

#
ls 
/media/disk/pc/steve/151/f%2f/froot/f.gconf/fdesktop/fgnome/faccessibility/fkeyboard/tempfile
 
/media/disk/pc/steve/151/f%2f/froot/f.gconf/fdesktop/fgnome/faccessibility/fkeyboard/tempfile

# sudo -u backuppc
rm 
/media/disk/pc/steve/151/f%2f/froot/f.gconf/fdesktop/fgnome/faccessibility/fkeyboard/tempfile

So no problems there

Steve

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