added xz compress option

README.md

@@ -26,8 +26,10 @@ lock all tables across all databases. This is achieved by acquiring a global rea
 WARNING!!! This will block all applications.  
 **-s, --single-transaction**  
 this option sets the transaction isolation mode to REPEATABLE READ and sends a START TRANSACTION SQL statement to the server before dumping data. It is useful only with transactional tables such as InnoDB, because then it dumps the consistent state of the database at the time when START TRANSACTION was issued without blocking any applications.  
-**-z, --compress**  
+**-z, --gzip**  
 compress dump using gzip  
+**-x, --xz**  
+compress dump using xz  
 **-m, --master**  
 set master data in dump  
 **-q, --quiet**  

mysql_backup.sh

@@ -15,7 +15,8 @@ usage()
         echo "-e | --email :: notification email"
        	echo "-l | --lock-all-tables"
        	echo "-s | --single-transaction"
-        echo "-z | --compress :: gzip dump"
+        echo "-z | --gzip :: compress dump using gzip"
+        echo "-x | --xz :: compress dump using xz"
         echo "-m | --master :: set master data"
         echo "-q | --quiet :: silent mode"
         echo "-h | --help :: display this help"
@@ -50,7 +51,9 @@ while [ "${1}" != "" ]; do
 	    -s | --single-transaction ) 
                                 singletrans=1
                                 ;;
-	    -z | --compress )       compress=1
+	    -z | --gzip )           gzip=1
+                                ;;
+        -x | --xz )             xz=1
                                 ;;
         -m | --master )         master=1
 	    -q | --quiet )		    quiet=1
@@ -105,6 +108,7 @@ mysqlparams="   --all-databases \
                 --comments \
                 --quick \
                 --force \
+                --ignore-table=mysql.proc
                 --log-error=/var/log/mysqldump.log" ;
 
 if [ "${singletrans}" ] ; then
@@ -142,17 +146,26 @@ dump_file_name="${dir}/${prefix}.${date}.sql" ;
 
 mysqldump ${mysqlparams} > ${dump_file_name} ;
 
-if [ "${compress}" ] ; then
+if [ "${gzip}" ] ; then
 
 	if [ ! "${quiet}" ] ; then
-        echo "Compressing dump (`date +\"%H:%M:%S\"`)..." ;
+        echo "Compressing dump by gzip (`date +\"%H:%M:%S\"`)..." ;
 	fi
 
 	gzip ${dump_file_name} ;
+else 
+    if  [ "${xz}" ] ; than
+
+        if [ ! "${quiet}" ] ; then
+            echo "Compressing dump by xz (`date +\"%H:%M:%S\"`)..." ;
+        fi
+
+        xz ${dump_file_name} ;
+    fi
 fi
 
 if [ ! "${quiet}" ] ; then
-    echo "atabase dump completed (`date +\"%H:%M:%S\"`)..." ;
+    echo "Dump completed (`date +\"%H:%M:%S\"`)..." ;
 fi
 
 rm -f ${mypidfile} ;