Refactored

script/common/preinstall.sh

@@ -0,0 +1,94 @@
+# ******************************************************************************* 
+#                                Pre-install stage 
+# ******************************************************************************* 
+
+function pre_install() {
+
+
+# ----- Erase entire disk, create partitions, format them  and encrypt the LUKS partition -----
+if [ ${ERASEALL} -eq 1 ] ; then
+
+	# Assign specified space and rest of disk to the EFI and LUKS partition, respectively.
+	if [  ${ISEFI} -eq 1 ] ; then
+		# Zap existing partition table and create new GPT
+		echo "...Initialize ${DEV} with GPT."
+		sgdisk --zap-all "${DEV}"
+		# Create EFI partition and format it
+		echo "...Create an EFI partition on ${DEV}."
+		sgdisk --new=${EFIPARTITION}:0:+${EFISIZE} --change-name=${EFIPARTITION}:"EFI System"  --typecode=${EFIPARTITION}:ef00 "${DEV}"  
+		echo "...Format the EFI parttion."
+		mkfs.vfat -F 32 -n EFI-SP "${DEV}${EFIPARTITION}"
+		# Create Linux partition
+		echo "...Create a Linux partition on ${DEV}."
+		sgdisk --new=${CRYPTPARTITION}:0:0    --change-name=${CRYPTPARTITION}:"Linux LUKS" --typecode=${CRYPTPARTITION}:8309 "${DEV}"
+		# Then print them
+		sgdisk --print "${DEV}"
+	else
+		# Zap existing partition table
+		echo "...Erase partition table of ${DEV}."
+		dd if=/dev/zero of=${DEV} bs=512 count=1
+		# Create MBR and allocate max storage for Linux partition
+		echo "...Create a Linux partition on ${DEV} with MBR."
+		sfdisk ${DEV} <<HEREDOC
+2M,,L
+HEREDOC
+	fi	# if EFI firmware
+
+	# Encrypt the partition to install Linux
+	echo "...Initialize ${DEV}${CRYPTPARTITION} as crypt partition"
+	printf %s "${PASSPHRASE}" | cryptsetup luksFormat --type=luks1 --key-file - --batch-mode "${DEV}${CRYPTPARTITION}"
+
+fi	# if erase all
+
+# ----- Open the LUKS partition -----
+# Open the crypt partition. 
+echo "...Open a crypt partition ${DEV}${CRYPTPARTITION} as \"${CRYPTPARTNAME}\""
+printf %s "${PASSPHRASE}" | cryptsetup open -d - "${DEV}${CRYPTPARTITION}" ${CRYPTPARTNAME}
+
+# Check whether successful open. If mapped, it is successful. 
+if [ ! -e /dev/mapper/${CRYPTPARTNAME} ] ; then 
+	cat <<HEREDOC 1>&2
+***** ERROR : Cannot open LUKS volume "${CRYPTPARTNAME}" on ${DEV}${CRYPTPARTITION}. *****
+Check passphrase and config.txt
+
+Installation terminated.
+HEREDOC
+	return 1
+fi	# if crypt volume is unable to open
+
+# ----- Configure the LVM in LUKS volume -----
+# Check volume group ${VGNAME} exist or not
+if  vgdisplay -s ${VGNAME} &> /dev/null ; then		# if exist
+	echo "...Volume group ${VGNAME} already exist. Skipped to create. No problem."
+else
+	echo "...Initialize a physical volume on \"${CRYPTPARTNAME}\""
+	pvcreate /dev/mapper/${CRYPTPARTNAME}
+	echo "...And then create Volume group \"${VGNAME}\"."
+	vgcreate ${VGNAME} /dev/mapper/${CRYPTPARTNAME}
+fi # if /dev/volume-groupt exist
+
+# Create a SWAP Logical Volume on VG, if it doesn't exist
+if [ -e /dev/mapper/${VGNAME}-${LVSWAPNAME} ] ; then 
+	echo "...Swap volume already exist. Skipped to create. No problem."
+else
+	echo "...Create logical volume \"${LVSWAPNAME}\" on \"${VGNAME}\"."
+	lvcreate -L ${LVSWAPSIZE} -n ${LVSWAPNAME} ${VGNAME} 
+fi	# if /dev/mapper/swap volume already exit. 
+
+# Create a ROOT Logical Volume on VG. 
+if [ -e /dev/mapper/${VGNAME}-${LVROOTNAME} ] ; then 
+	cat <<HEREDOC 1>&2
+***** ERROR : Logical volume "${VGNAME}-${LVROOTNAME}" already exists. *****
+Check LVROOTNAME environment variable in config.txt.
+
+Installation terminated.
+HEREDOC
+	return 1
+else
+	echo "...Create logical volume \"${LVROOTNAME}\" on \"${VGNAME}\"."
+	lvcreate -l ${LVROOTSIZE} -n ${LVROOTNAME} ${VGNAME}
+fi	# if the root volun already exist
+
+# successful return
+return 0
+}