diff --git a/backup-daemon/data/backup-auto b/backup-daemon/data/backup-auto
index 1157b5d..b68c0dd 100755
--- a/backup-daemon/data/backup-auto
+++ b/backup-daemon/data/backup-auto
@@ -33,6 +33,8 @@ fi
 
 m_backuplistPath=${m_mountPath}${BACKUP}"/snapshots/backuplist.xml"
 EXCLUDEFILE=${m_mountPath}${BACKUP}"/snapshots/.exclude"
+PLOGFILEDIR="${m_mountPath}${BACKUP}/log"
+PLOGFILE="$PLOGFILEDIR/log-$(date +%Y%m%d%H%M)"
 LOGFILE="/backup"${BACKUP}"/log.txt" #LOGFILE="/tmp/log.txt"
 
 #是否是出厂备份
@@ -121,6 +123,19 @@ mountBackup()
 
 	mount $myuuid $m_mountPath
 
+	mkdir -p $PLOGFILEDIR
+    if [ $? -ne 0 ]; then
+        echo "Could not create log directory in /backup"
+        exit 22
+    fi
+
+    touch $PLOGFILE
+    if [ $? -ne 0 ]; then
+        echo "Could not create log file"
+        exit 23
+    fi
+    echo "Log for backuping and restoring...." >$PLOGFILE
+
 	createBackupList #创建备份信息
 }
 
@@ -208,6 +223,14 @@ is_remote(){
 	fi
 }
 
+function caculateDirSize() {
+  mkdir -p /backup/snapshots/check/data
+  local total_file_size=$(rsync  -aAHXrn --stats --ignore-missing-args --exclude=/backup --exclude=/cdrom --exclude=/dev --exclude=/efi --exclude=/etc/uid_list --exclude=/data/ghost --exclude=/ghost --exclude=/lost+found --exclude=/media --exclude=/mnt --exclude=/proc --exclude=/run --exclude=/swap_file --exclude=/sys --exclude=/tmp --exclude=/var/lib/docker/overlay2 --exclude=/var/lib/kmre/data --exclude=/var/lib/kmre/kmre-*-*/data/media/0/0-麒麟* --exclude=/var/lib/udisks2 --exclude=/var/log --exclude=*/backup/snapshots --exclude=/data/home --exclude=/data/root "${rootpath}/" /backup/snapshots/check/data/ | grep "Total file size:" | awk '{print $4}' | sed 's/,//g')
+  total_file_size=$(expr ${total_file_size} + 200000000)
+  echo "备份所需空间大小：${total_file_size}" >>$PLOGFILE
+  echo "${total_file_size}"
+}
+
 #parameters: 无
 #返回值：(system_totalSize system_freeDisk system_usedDisk)
 caculateSystemSize(){
@@ -257,7 +280,8 @@ caculateSystemSize(){
                 	continue
         	fi  
 
-        	#echo $line
+        	echo $line
+		echo $line >>$PLOGFILE
 
         	device=$( echo "$line"|awk '{print $1}')
         	mntdir=$( echo "$line"|awk '{print $2}')
@@ -363,7 +387,8 @@ checkBackupCapacity() { #(m_rootPath.toStdString().c_str(), retstatus))
 	system_freeDisk=${result[1]}
 	system_usedDisk=${result[2]}
 
-	global_system_usedDisk=$system_usedDisk
+        #global_system_usedDisk=$system_usedDisk
+	global_system_usedDisk=$(caculateDirSize)
 
 	#echo "--system_totalSize="$system_totalSize
 	#echo "--system_freeDisk="$system_freeDisk
@@ -403,10 +428,11 @@ checkBackupCapacity() { #(m_rootPath.toStdString().c_str(), retstatus))
         	exit 403
 	fi
 
-	echo "bybobbi: bakup_freeDisk is " $backup_freeDisk
-        echo "bybobbi: system_usedDisk is " $system_usedDisk
-
-	if [ "$backup_freeDisk" -gt "$system_usedDisk" ]; then
+	#echo "bybobbi: bakup_freeDisk is " $backup_freeDisk
+        #echo "bybobbi: system_usedDisk is " $system_usedDisk
+	echo "free size : $backup_freeDisk; sys_size : $global_system_usedDisk"
+        echo "free size : $backup_freeDisk; sys_size : $global_system_usedDisk" >>$PLOGFILE
+	if [ ${backup_freeDisk} -gt ${global_system_usedDisk} ]; then
 		return 1 
 	else	
 		return 0 
diff --git a/backup-daemon/data/backup-auto-efi b/backup-daemon/data/backup-auto-efi
index f044612..196e11b 100755
--- a/backup-daemon/data/backup-auto-efi
+++ b/backup-daemon/data/backup-auto-efi
@@ -250,7 +250,7 @@ is_remote() {
 
 function caculateDirSize() {
   mkdir -p /backup/snapshots/check/data
-  local total_file_size=$(rsync  -aAHXrn --stats --ignore-missing-args --exclude=/backup --exclude=/cdrom --exclude=/dev --exclude=/efi --exclude=/etc/uid_list --exclude=/data/ghost --exclude=/ghost --exclude=/lost+found --exclude=/media --exclude=/mnt --exclude=/proc --exclude=/run --exclude=/swap_file --exclude=/sys --exclude=/tmp --exclude=/var/lib/docker/overlay2 --exclude=/var/lib/kmre/data --exclude=/var/lib/kmre/kmre-*-*/data/media/0/0-麒麟* --exclude=/var/lib/udisks2 --exclude=/var/log --exclude=*/backup/snapshots --exclude=/data/home --exclude=/data/root --exclude=/home/zhaominyong/.box --exclude=/data/home/zhaominyong/.box --exclude=/data "${rootpath}/" /backup/snapshots/check/data/ | grep "Total file size:" | awk '{print $4}' | sed 's/,//g')
+  local total_file_size=$(rsync  -aAHXrn --stats --ignore-missing-args --exclude=/backup --exclude=/cdrom --exclude=/dev --exclude=/efi --exclude=/etc/uid_list --exclude=/data/ghost --exclude=/ghost --exclude=/lost+found --exclude=/media --exclude=/mnt --exclude=/proc --exclude=/run --exclude=/swap_file --exclude=/sys --exclude=/tmp --exclude=/var/lib/docker/overlay2 --exclude=/var/lib/kmre/data --exclude=/var/lib/kmre/kmre-*-*/data/media/0/0-麒麟* --exclude=/var/lib/udisks2 --exclude=/var/log --exclude=*/backup/snapshots --exclude=/data/home --exclude=/data/root "${rootpath}/" /backup/snapshots/check/data/ | grep "Total file size:" | awk '{print $4}' | sed 's/,//g')
   total_file_size=$(expr ${total_file_size} + 200000000)
   echo "备份所需空间大小：${total_file_size}" >>$PLOGFILE
   echo "${total_file_size}"