diff --git a/hd_state_change_alert_all b/hd_state_change_alert_all
new file mode 100755
index 0000000..7a6a423
--- /dev/null
+++ b/hd_state_change_alert_all
@@ -0,0 +1,15 @@
+#!/bin/bash
+#disks=`ls /dev|grep sd'[a-z]*$'`
+disks=`ls -l /dev/disk/by-id/|grep -v 'dm'|grep -v 'part'|grep -v 'SSD'|grep -v 'nvme'|grep -v 'wwn'|awk -F '/' 'NR>1{print $NF}'`
+if [ ! -f /usr/bin/hdspindown ];then
+	cp ./hdspindown /usr/bin/
+fi
+uniq_disks=`echo ${disks} xxc`
+uniq_disks=`echo ${uniq_disks}|awk 'BEGIN{RS=" "; ORS=" "}{ if(a[$0] == 0){a[$0]+=1; print $0}}'`
+uniq_disks=`echo ${uniq_disks}|sed 's/xxc/ /'`
+
+for i in $uniq_disks;
+do
+    #echo $i
+    ~/hdspindown/hdstatealert.sh $i
+done
diff --git a/hdspindown b/hdspindown
index f344390..3c18242 100755
--- a/hdspindown
+++ b/hdspindown
@@ -6,7 +6,7 @@ STATS=`grep $disk /proc/diskstats|awk 'NR==1{print $0}'`
 LOCKFILE=/tmp/spinDown.lock
 STATFILE=/tmp/spinDown
 DOWNFILE=/tmp/spinDown
-LOGFILE=/tmp/spinDown.log
+LOGFILE=/root/hdspindown/spinDown.log
 
 if [ -f $LOCKFILE ]; then
     # we are already running
@@ -20,39 +20,48 @@ if [ ! -f $LOGFILE ];then
 fi
 touch $LOCKFILE
 
-DATE=`date`
+DATE=`date +"%m-%d %H:%M"`
+
+#echo "${STATS}----$DATE" >> /root/hdspindown/STAT.${disk}.log
 
 if [ -f ${STATFILE}.${disk}.stat ]; then
     PREVSTATS=`cat ${STATFILE}.${disk}.stat`
-    if [ "$STATS" = "$PREVSTATS" ] && [ ! -f ${DOWNFILE}.${disk}.down ]; then
-        # Disk stats unchanged and the disk spinning.  Hence, idle -> spin down.
-        echo "$DATE ${disk} idle, spinning down" >> /tmp/spinDown.log
-        #service smartd stop > /dev/null
-        #sdparm --command=sync /dev/${disk} &> /dev/null
-        #sdparm --command=stop /dev/${disk} &> /dev/null
-	/sbin/hdparm -y /dev/${disk} &> /dev/null
-	STATS=`grep $disk /proc/diskstats|awk 'NR==1{print $0}'`
-        echo "$STATS" > ${STATFILE}.${disk}.stat
-        touch ${DOWNFILE}.${disk}.down
+    if [ "$STATS" = "$PREVSTATS" ]; then
+        if [ ! -f ${DOWNFILE}.${disk}.down ]; then
+            # Disk stats unchanged and the disk spinning.  Hence, idle -> spin down.
+            echo "$DATE ${disk} idle, spinning down" >> ${LOGFILE} 
+            #service smartd stop > /dev/null
+            #sdparm --command=sync /dev/${disk} &> /dev/null
+            #sdparm --command=stop /dev/${disk} &> /dev/null
+	        /sbin/hdparm -y /dev/${disk} >/dev/null 2>&1
+	        STATS=`grep $disk /proc/diskstats|awk 'NR==1{print $0}'`
+            echo "$STATS" > ${STATFILE}.${disk}.stat
+            touch ${DOWNFILE}.${disk}.down
+        else
+            STAT_CMD=`/sbin/hdparm -C /dev/${disk} | grep 'state'|awk '{print $4}'`
+            if [ "x$STAT_CMD" = "xactive/idle" ];then
+                echo "$DATE ${disk} stat cmd error" >> ${LOGFILE}
+                rm -f ${DOWNFILE}.${disk}.down
+            fi
+
+        fi
     else
-        if [ "$STATS" != "$PREVSTATS" ] && [ -f ${DOWNFILE}.${disk}.down ]; then
+        if [ -f ${DOWNFILE}.${disk}.down ]; then
             # Disk stats are different & disk was down.  Remove the down state file.
-            echo "$DATE stats different for ${disk}" >> /tmp/spinDown.log
+            echo "$DATE stats different for ${disk}" >> ${LOGFILE}
             #service smartd start > /dev/null
             rm -f ${DOWNFILE}.${disk}.down
         fi
-        if [ "$STATS" != "$PREVSTATS" ]; then
-            echo "$STATS" > ${STATFILE}.${disk}.stat
-        fi
+        echo "$STATS" > ${STATFILE}.${disk}.stat
     fi
 else
     # Initialise the state file
-    echo "$DATE initialising for ${disk}" >> /tmp/spinDown.log
+    echo "$DATE initialising for ${disk}" >> ${LOGFILE}
     echo "$STATS" > ${STATFILE}.${disk}.stat
 fi
 
 rm -f $LOCKFILE
-if [ `cat /tmp/spinDown.log|wc -l` -gt 200 ];then
-	mv /tmp/spinDown.log /tmp/spinDown.log.1
-    touch /tmp/spinDown.log
+if [ `cat ${LOGFILE}|wc -l` -gt 200 ];then
+	mv ${LOGFILE} ${LOGFILE}.1
+    touch ${LOGFILE}
 fi
diff --git a/hdstatealert.sh b/hdstatealert.sh
new file mode 100755
index 0000000..0518de2
--- /dev/null
+++ b/hdstatealert.sh
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+disk=$1
+
+STATS=`/sbin/hdparm -C /dev/${disk} | grep 'state'|awk '{print $4}'`
+STATCMDFILE=/tmp/spinDown.CMD
+LOGFILE=/root/hdspindown/spinDown
+DATE=`date +"%m-%d %H:%M"`
+if [ -f ${STATCMDFILE}.${disk} ]; then
+    PREVSTATS=`cat ${STATCMDFILE}.${disk}`
+    if [ "$STATS" = "$PREVSTATS" ]; then
+        exit 0
+    else
+        echo "$DATE state change $PREVSTATS -->$STATS">>${LOGFILE}.${disk}.alert.log
+        echo "$STATS" > ${STATCMDFILE}.${disk}
+    fi
+else
+    echo "$STATS" > ${STATCMDFILE}.${disk}
+fi
diff --git a/spindownall b/spindownall
index 98504d4..3f29dc4 100755
--- a/spindownall
+++ b/spindownall
@@ -1,11 +1,15 @@
 #!/bin/bash
 #disks=`ls /dev|grep sd'[a-z]*$'`
-disks=`ls -l /dev/disk/by-id/|grep -v 'part'|grep -v 'SSD'|grep -v 'nvme'|grep -v 'wwn'|awk -F '/' 'NR>1{print $NF}'`
+disks=`ls -l /dev/disk/by-id/|grep -v 'dm'|grep -v 'part'|grep -v 'SSD'|grep -v 'nvme'|grep -v 'wwn'|awk -F '/' 'NR>1{print $NF}'`
 if [ ! -f /usr/bin/hdspindown ];then
 	cp ./hdspindown /usr/bin/
 fi
-for i in $disks;
+uniq_disks=`echo ${disks} xxc`
+uniq_disks=`echo ${uniq_disks}|awk 'BEGIN{RS=" "; ORS=" "}{ if(a[$0] == 0){a[$0]+=1; print $0}}'`
+uniq_disks=`echo ${uniq_disks}|sed 's/xxc/ /'`
+
+for i in $uniq_disks;
 do
-    echo $i
-	hdspindown $i
+    #echo $i
+    hdspindown $i
 done