Update HISTORY

HISTORY

@@ -1,6 +1,18 @@
 SnapRAID HISTORY
 ================
 
+9.3 2016/01
+===========
+ * Fixes an invalid assumption in the copy detection mechanism that
+   could result in an internal inconsistency, and with the impossibility
+   to run the 'sync' and 'diff' commands.
+   This was triggered by a very specific pattern of identical files.
+   At least three of them, with one already in the parity, and at a
+   higher disk number than the others that should be instead new ones.
+   This had no bad effect, if not preventing the 'sync' command to run.
+   A workaround was to just run 'sync' one time with the -N, --force-nocopy
+   option to disable the copy detection.
+
 9.2 2016/01
 ===========
  * Fixes support for symlinks pointing to an empty target. Before they
@@ -277,7 +289,7 @@ SnapRAID HISTORY
  * For files with changes only in some blocks, updates the parity
    only for blocks that really are changed.
    This improves the performance in sync for modified files.
- * Added a new "list" command to see the stored list of files.   
+ * Added a new "list" command to see the stored list of files.
  * Removed the detailed list of errors from the screen output.
    To get it you must explicitly use the -l, --log option.
    It's now too detailed for the screen, because it contains a lot
@@ -454,7 +466,7 @@ SnapRAID HISTORY
  * Fixed very long paths in Windows. We now always use the special '\\?' prefix
    to remove the 260 chars limitation.
  * If a file is excluded, it prints explicitly which attribute caused the
-   exclusion.   
+   exclusion.
  * Automatically excludes also the temporary copy of content file,
    the one with the ".tmp" extension.
  * Avoid Windows to go in automatic sleep mode when running.