migrate-3-4.px: Use 'rrdtool tune' instead of 'sed' to rename DS's.

Either the output format of 'rrdtool dump' has changed or there was an
error in the regex used with sed in the first place. Anyway, in some cases
the 'if_octects' DS's did not get translated. 'rrdtool tune' should be
able to handle it correctly in any case.

Signed-off-by: Sebastian Harl <sh@tokkee.org>
Signed-off-by: Florian Forster <octo@huhu.verplant.org>

diff --git a/contrib/migrate-3-4.px b/contrib/migrate-3-4.px
index 673929c..bb5bc94 100755 (executable)
--- a/contrib/migrate-3-4.px
+++ b/contrib/migrate-3-4.px
@@ -169,22 +169,23 @@ for (@Files)
                        print "./rrd_filter.px -i '$InDir/$orig_filename' -m '${src_ds}:${dst_ds}' -o '$OutDir/$dest_filename'\n";
                }
        }
-       elsif (exists ($TypeRename{$orig->{'type'}}))
+       else
+       {
+               print "cp '$InDir/$orig_filename' '$OutDir/$dest_filename'\n";
+       }
+
+       if (exists ($TypeRename{$orig->{'type'}}))
        {
                my $src_dses = $TypeRename{$orig->{'type'}}->{'from'};
                my $dst_dses = $TypeRename{$orig->{'type'}}->{'to'};
-               my @sed_prog = ();
 
+               print "rrdtool tune '$OutDir/$dest_filename'";
                for (my $i = 0; $i < @$src_dses; $i++)
                {
-                       push (@sed_prog, 's/^' . $src_dses->[$i] . '$/' . $dst_dses->[$i] . '/g;');
+                       print " --data-source-rename "
+                               . $src_dses->[$i] . ':' . $dst_dses->[$i];
                }
-
-               print "rrdtool dump '$InDir/$orig_filename' | sed -e '" . join (' ', @sed_prog) . "' | rrdtool restore - '$OutDir/$dest_filename'\n";
-       }
-       else
-       {
-               print "cp '$InDir/$orig_filename' '$OutDir/$dest_filename'\n";
+               print "\n";
        }
 }