Merge pull request #45 from tehniemer/master

Added ratio override for sync
Add documentation about added to deleted threshold
Added enable bit to scrub new blocks after sync.
Updated message subjects for accurate alerts.
Redefine SNAPSCRIPTVERSION for use in the script.
Added date/time to scrub messages.
chk_del() function was modified for cases when DEL_THRESHOLD is set to 0.

Author: Oliver Cervera

script-config.sh

@@ -71,12 +71,16 @@ ADD_DEL_THRESHOLD=0
 # manual sync if delete threshold is breached).
 SYNC_WARN_THRESHOLD=-1
 
-# Set percentage of array to scrub if it is in sync. i.e. 0 to disable and 100
-# to scrub the full array in one go WARNING - depending on size of your array,
-# setting to 100 will take a very long time!
+# Set percentage and age, in days, of blocks in array to scrub if it is in sync.
+# i.e. 0 to disable and 100 to scrub the full array in one go.
+# WARNING - depending on size of your array, setting to 100 can take a long time!
 SCRUB_PERCENT=5
 SCRUB_AGE=10
 
+# Scrub new blocks after sync that have yet to be scrubbed. 1 to enable and any
+# other value to disable.
+SCRUB_NEW=0
+
 # Set number of script runs before running a scrub. Use this option if you
 # don't want to scrub the array every time.
 # Set to 0 to disable this option and run scrub every time.