diff --git a/config-swappart.example b/config-swappart.example new file mode 100755 index 0000000..028baa7 --- /dev/null +++ b/config-swappart.example @@ -0,0 +1,8 @@ +#!/bin/bash -e + +export IMG_NAME="swapport-test" +export stage2_EXPORT_LIST="export-swappart-image export-image export-noobs" +export stage4_EXPORT_LIST="export-swappart-image export-image export-noobs" +export stage5_EXPORT_LIST="export-swappart-image export-image export-noobs" +# 2GB Swap +export SWAP_SIZE=$(( 2048 * 1024 * 1024)) diff --git a/export-swappart-image/00-allow-rerun b/export-swappart-image/00-allow-rerun new file mode 120000 index 0000000..ae6d1a5 --- /dev/null +++ b/export-swappart-image/00-allow-rerun @@ -0,0 +1 @@ +../export-image/00-allow-rerun \ No newline at end of file diff --git a/export-swappart-image/01-set-sources b/export-swappart-image/01-set-sources new file mode 120000 index 0000000..3f62d00 --- /dev/null +++ b/export-swappart-image/01-set-sources @@ -0,0 +1 @@ +../export-image/01-set-sources \ No newline at end of file diff --git a/export-swappart-image/02-network b/export-swappart-image/02-network new file mode 120000 index 0000000..93688f2 --- /dev/null +++ b/export-swappart-image/02-network @@ -0,0 +1 @@ +../export-image/02-network \ No newline at end of file diff --git a/export-swappart-image/03-set-partuuid/00-run.sh b/export-swappart-image/03-set-partuuid/00-run.sh new file mode 100644 index 0000000..15390fb --- /dev/null +++ b/export-swappart-image/03-set-partuuid/00-run.sh @@ -0,0 +1,16 @@ +#!/bin/bash -e + +IMG_FILE="${STAGE_WORK_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.img" + +IMGID="$(dd if="${IMG_FILE}" skip=440 bs=1 count=4 2>/dev/null | xxd -e | cut -f 2 -d' ')" + +BOOT_PARTUUID="${IMGID}-01" +SWAP_PARTUUID="${IMGID}-02" +ROOT_PARTUUID="${IMGID}-03" + +install -m 0644 files/fstab "${ROOTFS_DIR}/etc/fstab" +sed -i "s/BOOTDEV/PARTUUID=${BOOT_PARTUUID}/" "${ROOTFS_DIR}/etc/fstab" +sed -i "s/SWAPDEV/PARTUUID=${SWAP_PARTUUID}/" "${ROOTFS_DIR}/etc/fstab" +sed -i "s/ROOTDEV/PARTUUID=${ROOT_PARTUUID}/" "${ROOTFS_DIR}/etc/fstab" + +sed -i "s/ROOTDEV/PARTUUID=${ROOT_PARTUUID}/" "${ROOTFS_DIR}/boot/cmdline.txt" diff --git a/export-swappart-image/03-set-partuuid/files/fstab b/export-swappart-image/03-set-partuuid/files/fstab new file mode 100644 index 0000000..b0de775 --- /dev/null +++ b/export-swappart-image/03-set-partuuid/files/fstab @@ -0,0 +1,4 @@ +proc /proc proc defaults 0 0 +BOOTDEV /boot vfat defaults 0 2 +ROOTDEV / ext4 defaults,noatime 0 1 +SWAPDEV none swap sw 0 0 diff --git a/export-swappart-image/04-finalise b/export-swappart-image/04-finalise new file mode 120000 index 0000000..4f18bf3 --- /dev/null +++ b/export-swappart-image/04-finalise @@ -0,0 +1 @@ +../export-image/04-finalise \ No newline at end of file diff --git a/export-swappart-image/prerun.sh b/export-swappart-image/prerun.sh new file mode 100755 index 0000000..eee6181 --- /dev/null +++ b/export-swappart-image/prerun.sh @@ -0,0 +1,71 @@ +#!/bin/bash -e + +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))" +SWAP_SIZE="${SWAP_SIZE:-$((1024 * 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="$((4 * 1024 * 1024))" +# Add this much space to the calculated file size. This allows for +# some overhead (since actual space usage is usually rounded up to the +# filesystem block size) and gives some free space on the resulting +# image. +ROOT_MARGIN=$((800*1024*1024)) + +BOOT_PART_START=$((ALIGN)) +BOOT_PART_SIZE=$(((BOOT_SIZE + ALIGN - 1) / ALIGN * ALIGN)) +SWAP_PART_START=$((BOOT_PART_START + BOOT_PART_SIZE)) +SWAP_PART_SIZE=$(((SWAP_SIZE + ALIGN - 1) / ALIGN * ALIGN)) +ROOT_PART_START=$((SWAP_PART_START + SWAP_PART_SIZE)) +ROOT_PART_SIZE=$(((ROOT_SIZE + ROOT_MARGIN + ALIGN - 1) / ALIGN * ALIGN)) +IMG_SIZE=$((BOOT_PART_START + BOOT_PART_SIZE + SWAP_PART_SIZE + ROOT_PART_SIZE)) + +truncate -s "${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 linux-swap "${SWAP_PART_START}" "$((SWAP_PART_START + SWAP_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 "$PARTED_OUT" | grep -e '^1:' | cut -d':' -f 4 | tr -d B) + +SWAP_OFFSET=$(echo "$PARTED_OUT" | grep -e '^2:' | cut -d':' -f 2 | tr -d B) +SWAP_LENGTH=$(echo "$PARTED_OUT" | grep -e '^2:' | cut -d':' -f 4 | tr -d B) + +ROOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^3:' | cut -d':' -f 2 | tr -d B) +ROOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^3:' | cut -d':' -f 4 | tr -d B) + +BOOT_DEV=$(losetup --show -f -o "${BOOT_OFFSET}" --sizelimit "${BOOT_LENGTH}" "${IMG_FILE}") +SWAP_DEV=$(losetup --show -f -o "${SWAP_OFFSET}" --sizelimit "${SWAP_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 "swap: offset $SWAP_OFFSET, length $SWAP_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 "$BOOT_DEV" > /dev/null +mkswap "$SWAP_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/" "${ROOTFS_DIR}/boot/" diff --git a/stage2/EXPORT_SWAPPART_IMAGE b/stage2/EXPORT_SWAPPART_IMAGE new file mode 100644 index 0000000..a66d490 --- /dev/null +++ b/stage2/EXPORT_SWAPPART_IMAGE @@ -0,0 +1,4 @@ +IMG_SUFFIX="-swap-lite" +if [ "${USE_QEMU}" = "1" ]; then + export IMG_SUFFIX="${IMG_SUFFIX}-qemu" +fi