#!/bin/bash -e if [ "${NO_PRERUN_QCOW2}" = "0" ]; then IMG_FILE="${STAGE_WORK_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.img" unmount_image "${IMG_FILE}" rm -f "${IMG_FILE}" rm -rf "${ROOTFS_DIR}" mkdir -p "${ROOTFS_DIR}" BOOT_SIZE="$((256 * 1024 * 1024))" ROOT_SIZE=$(du --apparent-size -s "${EXPORT_ROOTFS_DIR}" --exclude var/cache/apt/archives --exclude boot --block-size=1 | cut -f 1) # All partition sizes and starts will be aligned to this size ALIGN="$((4 * 1024 * 1024))" # Add this much space to the calculated file size. This allows for # some overhead (since actual space usage is usually rounded up to the # filesystem block size) and gives some free space on the resulting # image. ROOT_MARGIN="$(echo "($ROOT_SIZE * 0.2 + 200 * 1024 * 1024) / 1" | bc)" BOOT_PART_START=$((ALIGN)) BOOT_PART_SIZE=$(((BOOT_SIZE + ALIGN - 1) / ALIGN * ALIGN)) ROOT_PART_START=$((BOOT_PART_START + BOOT_PART_SIZE)) ROOT_PART_SIZE=$(((ROOT_SIZE + ROOT_MARGIN + ALIGN - 1) / ALIGN * ALIGN)) IMG_SIZE=$((BOOT_PART_START + BOOT_PART_SIZE + ROOT_PART_SIZE)) truncate -s "${IMG_SIZE}" "${IMG_FILE}" parted --script "${IMG_FILE}" mklabel msdos parted --script "${IMG_FILE}" unit B mkpart primary fat32 "${BOOT_PART_START}" "$((BOOT_PART_START + BOOT_PART_SIZE - 1))" parted --script "${IMG_FILE}" unit B mkpart primary ext4 "${ROOT_PART_START}" "$((ROOT_PART_START + ROOT_PART_SIZE - 1))" PARTED_OUT=$(parted -sm "${IMG_FILE}" unit b print) BOOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^1:' | cut -d':' -f 2 | tr -d B) BOOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^1:' | cut -d':' -f 4 | tr -d B) ROOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^2:' | cut -d':' -f 2 | tr -d B) ROOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^2:' | cut -d':' -f 4 | tr -d B) BOOT_DEV=$(losetup --show -f -o "${BOOT_OFFSET}" --sizelimit "${BOOT_LENGTH}" "${IMG_FILE}") ROOT_DEV=$(losetup --show -f -o "${ROOT_OFFSET}" --sizelimit "${ROOT_LENGTH}" "${IMG_FILE}") echo "/boot: offset $BOOT_OFFSET, length $BOOT_LENGTH" echo "/: offset $ROOT_OFFSET, length $ROOT_LENGTH" ROOT_FEATURES="^huge_file" for FEATURE in metadata_csum 64bit; do if grep -q "$FEATURE" /etc/mke2fs.conf; then ROOT_FEATURES="^$FEATURE,$ROOT_FEATURES" fi done mkdosfs -n boot -F 32 -v "$BOOT_DEV" > /dev/null mkfs.ext4 -L rootfs -O "$ROOT_FEATURES" "$ROOT_DEV" > /dev/null mount -v "$ROOT_DEV" "${ROOTFS_DIR}" -t ext4 mkdir -p "${ROOTFS_DIR}/boot" mount -v "$BOOT_DEV" "${ROOTFS_DIR}/boot" -t vfat rsync -aHAXx --exclude /var/cache/apt/archives --exclude /boot "${EXPORT_ROOTFS_DIR}/" "${ROOTFS_DIR}/" rsync -rtx "${EXPORT_ROOTFS_DIR}/boot/" "${ROOTFS_DIR}/boot/" fi