Merge "Add virtual media boot support in ramdisk element."

elements/ramdisk/extra-data.d/scripts/d/init-func

@@ -13,22 +13,72 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+function configure_vmedia_dir() {
+    VMEDIA_MOUNT_POINT="/vfloppy_mnt"
+    VMEDIA_DIR="/vfloppy"
+    VMEDIA_CONFIG_FILE="parameters.txt"
+
+    SYSFS_DEVICE_MODELS="/sys/class/block/*/device/model"
+    SYSFS_VMEDIA_DEVICE_MODEL="virtual media"
+
+    # Wait for some seconds for kernel to finish initializing the
+    # virtual media devices.
+    wait_for 5 1 "grep -q -i \"$SYSFS_VMEDIA_DEVICE_MODEL\" $SYSFS_DEVICE_MODELS"
+    if [[ $? != 0 ]]; then
+        echo "Error finding the virtual floppy device on the node."
+        troubleshoot
+    fi
+
+    # Find the virtual media device from the kernel sysfs file system.
+    VMEDIA_DEVICE=$(grep -l -i "$SYSFS_VMEDIA_DEVICE_MODEL" $SYSFS_DEVICE_MODELS | awk -F'/' '{print $5}')
+    if [[ -z $VMEDIA_DEVICE ]]; then
+        echo "Error finding the virtual floppy device on the node."
+        troubleshoot
+    fi
+
+    # Mount the virtual media device
+    VMEDIA_DEVICE_FILE="/dev/$VMEDIA_DEVICE"
+    mkdir -p $VMEDIA_MOUNT_POINT
+    mount $VMEDIA_DEVICE_FILE $VMEDIA_MOUNT_POINT
+    if [[ $? != 0 ]]; then
+        echo "Error mounting virtual media device $VMEDIA_DEVICE_FILE"
+        troubleshoot
+    fi
+
+    # Copy the contents of the virtual media to a directory in root
+    # filesystem so that we can unmount virtual media soon.
+    cp -rf $VMEDIA_MOUNT_POINT $VMEDIA_DIR
+    umount $VMEDIA_MOUNT_POINT
+}
+
 function get_kernel_parameter() {
-    local name=$1
-    for i in `cat /proc/cmdline`; do
+    if [ "$BOOT_METHOD" = "$VMEDIA_BOOT_TAG" ]; then
+        echo $(find_parameter_from_file $1 "$VMEDIA_DIR/$VMEDIA_CONFIG_FILE")
+    else
+        echo $(find_parameter_from_file $1 "/proc/cmdline")
+    fi
+}
+
+function find_parameter_from_file() {
+
+    local paramname=$1
+    local filename=$2
+
+    for i in `cat $filename`; do
         case "$i" in
-        ${name}=*)
-            echo "${i#${name}=}"
-            return 0
+            ${paramname}=*)
+                echo "${i#${paramname}=}"
+                return 0
             ;;
-        ${name})
-            echo ""
-            return 0
+            ${paramname})
+                echo ""
+                return 0
             ;;
-        *)
+            *)
             ;;
         esac
     done
+
     echo ""
     return 1
 }

elements/ramdisk/extra-data.d/scripts/init

@@ -31,22 +31,6 @@ mkdir -p /proc /sys /dev /boot /etc /mnt /lib/modules
 
 mount -t proc proc /proc
 
-readonly _BOOTIF_=$(get_kernel_parameter BOOTIF)
-readonly _IP_=$(get_kernel_parameter ip)
-readonly BOOT_MAC_ADDRESS=$(echo "$_BOOTIF_" | sed -e "s/-/:/g"  | sed -e "s/^01://g" | tr 'a-f' 'A-F')
-readonly BOOT_SERVER=$(echo "$_IP_" | cut -d':' -f2)
-
-# IP address and other parameters may be set later in the init script
-BOOT_IP_ADDRESS=$(echo "$_IP_" | cut -d':' -f1)
-BOOT_NETMASK=$(echo "$_IP_" | cut -d':' -f4)
-BOOT_GATEWAY=$(echo "$_IP_" | cut -d':' -f3)
-
-readonly DISK=$(get_kernel_parameter disk)
-
-readonly DEPLOYMENT_ID=$(get_kernel_parameter deployment_id)
-readonly DEPLOYMENT_KEY=$(get_kernel_parameter deployment_key)
-readonly ISCSI_TARGET_IQN=$(get_kernel_parameter iscsi_target_iqn)
-TROUBLESHOOT=$(get_kernel_parameter troubleshoot)
 FIRST_ERR_MSG=
 
 mount -t sysfs none /sys
@@ -102,3 +86,34 @@ $UDEVD --daemon --resolve-names=never
 
 echo "load modules"
 load_modules_by_udev
+
+# To identify that the node has booted from virtual media, a kernel
+# command-line argument boot_method=vmedia is added in the iso bootloader
+# configuration file (like isolinux.cfg for isolinux).
+VMEDIA_BOOT_TAG="vmedia"
+BOOT_METHOD=$(get_kernel_parameter boot_method)
+
+if [ "$BOOT_METHOD" = "$VMEDIA_BOOT_TAG" ]; then
+
+    # If the node booted from virtual media cdrom, the arguments for the
+    # installation are provided in virtual media floppy. Find out
+    # the virtual media device, mount it and get the information.
+    configure_vmedia_dir
+fi
+
+readonly _BOOTIF_=$(get_kernel_parameter BOOTIF)
+readonly _IP_=$(get_kernel_parameter ip)
+readonly BOOT_MAC_ADDRESS=$(echo "$_BOOTIF_" | sed -e "s/-/:/g" | \
+                            sed -e "s/^01://g" | tr 'a-f' 'A-F')
+readonly BOOT_IP_ADDRESS=$(echo "$_IP_" | cut -d':' -f1)
+readonly BOOT_SERVER=$(echo "$_IP_" | cut -d':' -f2)
+readonly BOOT_NETMASK=$(echo "$_IP_" | cut -d':' -f4)
+readonly BOOT_GATEWAY=$(echo "$_IP_" | cut -d':' -f3)
+
+readonly DISK=$(get_kernel_parameter disk)
+
+readonly DEPLOYMENT_ID=$(get_kernel_parameter deployment_id)
+readonly DEPLOYMENT_KEY=$(get_kernel_parameter deployment_key)
+readonly ISCSI_TARGET_IQN=$(get_kernel_parameter iscsi_target_iqn)
+TROUBLESHOOT=$(get_kernel_parameter troubleshoot)
+