RESOLVED #31 Error when destination has no snapshots

UPDATED readme, version

README.rst

@@ -275,6 +275,10 @@ transfer
 Changelog
 =========
 
+0.6.8
+-----
+* RESOLVED #31 Error when destination has no snapshots
+
 0.6.7
 -----
 * FIXED #30: full snapshot warning breaks local jobs (having no destination)

btrfs_sxbackup/__init__.py

@@ -5,7 +5,7 @@
 # Software Foundation; either version 2 of the License, or (at your option)
 # any later version.
 
-__version__ = '0.6.7'
+__version__ = '0.6.8'
 __author__ = 'Marco Schindler'
 __email__ = 'masc@disappear.de'
 __maintainer__ = 'masc@disappear.de'

btrfs_sxbackup/core.py

@@ -967,12 +967,16 @@ def run(self):
         source_parent_path = None
         if len(self.source.snapshots) > 0:
             # Latest source and destination snapshot timestamp has to match for incremental transfer
-            if self.destination is not None \
-                    and self.source.snapshots[0].name.timestamp != self.destination.snapshots[0].name.timestamp:
-                _logger.warn(
-                    ('Latest timestamps of source [%s] and destination [%s] do not match. A full snapshot will '
-                     'be transferred')
-                    % (self.source.snapshots[0].name.timestamp, self.destination.snapshots[0].name.timestamp))
+            if self.destination is not None:
+                if len(self.destination.snapshots) > 0:
+                    if self.source.snapshots[0].name.timestamp != self.destination.snapshots[0].name.timestamp:
+                        _logger.warn(
+                            ('Latest timestamps of source [%s] and destination [%s] do not match. A full snapshot will '
+                             'be transferred')
+                            % (self.source.snapshots[0].name.timestamp, self.destination.snapshots[0].name.timestamp))
+                else:
+                    _logger.warn('Destination has no snapshots, a full snapshot will be transferred')
+
             else:
                 source_parent_path = os.path.join(self.source.container_subvolume_path,
                                                   str(self.source.snapshots[0].name))