On Wed, 12 Aug 2009 18:12:09 -0400
"Jeffrey J. Kosowsky" <backu...@kosowsky.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" <backu...@kosowsky.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" <backu...@kosowsky.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" <backu...@kosowsky.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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