优化grub分区挂载脚本

backup-daemon/data/mount_fstab_efi

@@ -79,6 +79,8 @@ mount_fstab(){
 	
 	# 将/usr/share/initramfs-tools/scripts/local-bottom/kybackup脚本放到/usr/share/initramfs-tools/scripts/init-bottom下后，在备份还原前就已经mount了各个分区（bind的没有mount）
 	echo "rw mode remount $fstab_path begin"
+        local mounted_path=
+	local tmp_path=
 	cat "$fstab_path" | grep -Ev "^#" | awk '{print $1 " " $2 " " $3 " " $4 " " $5 " " $6}' |
 	while read device mntdir fstype options dump passno ;
 	do
@@ -92,8 +94,8 @@ mount_fstab(){
 		#virtual or network filesystems
 		([ none = "$mntdir" ] || [ yes = $(is_remote $fstype) ]) && continue
 
-		#swap or backup分区，backup分区后面单独挂载
-		([ swap = "$fstype" ] || [ /backup = "$mntdir" ]) && continue
+		#swap or backup分区，backup分区后面单独挂载，根分区已挂载
+		([ swap = "$fstype" ] || [ /backup = "$mntdir" ] || [ / = "$mntdir" ]) && continue
 
 		#not system partition
 		#[ no = $(is_system_partition $mntdir) ] && continue
@@ -101,12 +103,18 @@ mount_fstab(){
 		#去掉首字符'/'
 		#mntdir_name=$(echo $mntdir | sed 's:^/::g')
 		#target_mntdir="/$(echo $mntdir_name | sed 's:/:-:g').orig"
-		target_mntdir=${rootmnt}${mntdir}	
+		target_mntdir=${rootmnt}${mntdir}
+                mounted_path=
+	        tmp_path=	
 		mkdir -p "$target_mntdir"
+		tmp_path=$target_mntdir
+		mounted_path=$(mount | awk -v v_path=${tmp_path} '{ if($3 == v_path) print $3 }')
 		if [[ $options =~ bind ]] ; then
-		    # bind挂载的就不再挂了
 		    echo "mount -o $options ${rootmnt}${device} $target_mntdir"
 		    mount -o $options "${rootmnt}${device}" "$target_mntdir"
+	        elif [ "x" == "x"${mounted_path} ]; then
+		    echo "mount -n -t $fstype -o $mntopts $device $target_mntdir"
+                    mount -n -t $fstype -o $mntopts $device "$target_mntdir"
 		else
 		    # echo "mount -n -t $fstype -o $mntopts $device $target_mntdir"
 		    # mount -n -t $fstype -o $mntopts $device "$target_mntdir"