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203ff_export_rootfs
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#!/bin/bash |
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function showhelp() |
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{ |
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echo -e " |
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ff_export_rootfs </path/to/store> [-t <ext4|btrfs>] |
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" |
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exit -1 |
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} |
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function prepare_rootfs() |
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{ |
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systemctl enable resize-helper.service > /dev/null 2>&1 |
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apt-get clean -y |
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} |
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function clead_target_rootfs() |
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{ |
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ROOT_DIR=$1 |
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rm -rf ${ROOT_DIR}/usr/share/doc/* |
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rm -rf ${ROOT_DIR}/var/lib/apt/lists/* |
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rm -rf ${ROOT_DIR}/tmp/* |
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find ${ROOT_DIR}/usr/share/man/ -name "*.gz" -exec rm {} \; |
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find ${ROOT_DIR}/var/log/ -type f -exec rm {} \; |
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for item in $(ls ${ROOT_DIR}/media/ 2>/dev/null); do |
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if id ${item} > /dev/null 2>&1 |
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then |
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chown -R ${item}:${item} ${ROOT_DIR}/media/${item} |
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fi |
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done |
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if [[ -L "${ROOT_DIR}/var/lib/docker" ]] |
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then |
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orig_dir=$(readlink "${ROOT_DIR}/var/lib/docker") |
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if [[ ! -d ${ROOT_DIR}/${orig_dir} ]] |
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then |
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rm -rf "${ROOT_DIR}/var/lib/docker" |
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rsync -aqx "${orig_dir}/" "${ROOT_DIR}/var/lib/docker" |
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fi |
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fi |
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} |
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function umount_img() { |
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if mountpoint -q $TEMP_MOUNT_POINT; then |
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umount $TEMP_MOUNT_POINT |
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fi |
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rm -rf $TEMP_MOUNT_POINT |
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} |
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function finish() { |
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umount_img |
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exit -1 |
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} |
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[[ $UID -ne 0 ]] && echo -e "\033[31m should run as root \033[0m" && showhelp |
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[[ -n "$(which rsync)" ]] || { echo -e " rsync not found\n\033[31m apt install rsync \033[0m"; exit -1; } |
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[[ $# -lt 1 ]] && showhelp; |
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[[ "$1" == "-u" ]] && { PORT_UPPER="1"; shift; } |
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DEST_PATH=$1 |
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MEDIA_DEVICE= |
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STORE_FS_TYPE= |
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[[ -d $DEST_PATH ]] || { echo -e "\033[31m store path not exist \033[0m"; exit -1; } |
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if [[ $# -eq 3 ]] && [[ $2 == "-t" ]]; then |
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case $3 in |
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ext4|btrfs) |
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STORE_FS_TYPE=$3 |
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;; |
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*) |
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showhelp |
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;; |
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esac |
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fi |
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PORT_OVERLAYROOT=false |
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ROOTFS_DEVICE=`findmnt -n -o SOURCE --target /` |
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if [[ "${ROOTFS_DEVICE}" == "overlayroot" ]]; then |
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PORT_OVERLAYROOT=true |
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OVERLAY_MOUNT=$(mount | sed -n '/^overlayroot/p') |
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UPPER_MOUNTPOINT=$(echo ${OVERLAY_MOUNT} | grep -Eo "upperdir.*" | cut -f 1 -d , | cut -f 2 -d =) |
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LOWER_MOUNTPOINT=$(echo ${OVERLAY_MOUNT} | grep -Eo "lowerdir.*" | cut -f 1 -d , | cut -f 2 -d =) |
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LOWER_DEVICE=$(findmnt -n -o SOURCE --target ${LOWER_MOUNTPOINT}) |
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UPPER_DEVICE=$(findmnt -n -o SOURCE --target ${UPPER_MOUNTPOINT}) |
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if [[ "${PORT_UPPER}" == "1" ]]; then |
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PORT_OVERLAYROOT=false |
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ROOTFS_DEVICE=${UPPER_DEVICE} |
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ROOTFS_MOUNTPOINT=${UPPER_MOUNTPOINT}/ |
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ROOTFS_TYPE=$(blkid -o value -s TYPE ${ROOTFS_DEVICE}) |
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ROOTFS_PARTLABEL=$(lsblk -n -o PARTLABEL ${ROOTFS_DEVICE}) |
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[[ -n "${ROOTFS_PARTLABEL}" ]] || ROOTFS_PARTLABEL="userdata" |
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else |
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ROOTFS_MOUNTPOINT="/" |
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ROOTFS_TYPE=$(blkid -o value -s TYPE ${LOWER_DEVICE}) |
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ROOTFS_PARTLABEL=$(lsblk -n -o PARTLABEL ${LOWER_DEVICE}) |
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[[ -n "${ROOTFS_PARTLABEL}" ]] || ROOTFS_PARTLABEL="rootfs" |
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fi |
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else |
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if [[ "${ROOTFS_DEVICE}" == "/dev/root" ]]; then |
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MAJOR_ROOTFS=$(mountpoint -d / | cut -f 1 -d ":") |
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MINOR_ROOTFS=$(mountpoint -d / | cut -f 2 -d ":") |
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DEV_ROOTFS=$(cat /proc/partitions | awk {'if ($1 == "'${MAJOR_ROOTFS}'" && $2 == "'${MINOR_ROOTFS}'") print $4 '}) |
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ROOTFS_DEVICE=/dev/${DEV_ROOTFS} |
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fi |
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PORT_OVERLAYROOT=false |
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ROOTFS_MOUNTPOINT="/" |
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ROOTFS_TYPE=$(blkid -o value -s TYPE ${ROOTFS_DEVICE}) |
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ROOTFS_PARTLABEL=$(lsblk -n -o PARTLABEL ${ROOTFS_DEVICE}) |
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[[ -n "${ROOTFS_PARTLABEL}" ]] || ROOTFS_PARTLABEL="rootfs" |
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fi |
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#MEDIA_DEVICE=`findmnt -n -o SOURCE --target $DEST_PATH` |
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MEDIA_FS_TYPE=`df $DEST_PATH --output=fstype | awk 'NR==2 {print $1}'` |
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MEDIA_FREE_SPACE=`df $DEST_PATH -m --output=avail | awk 'NR==2 {print $1}'` |
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#[[ $MEDIA_DEVICE != $ROOTFS_DEVICE ]] || { echo -e "\033[31m can not store in local device \033[0m"; exit -1; } |
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#[[ $MEDIA_FS_TYPE != "vfat" ]] || { echo -e "\033[31m store media fs type cannot be FAT \033[0m"; exit -1; } |
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prepare_rootfs |
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if [[ $ROOTFS_TYPE == "btrfs" ]]; then |
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ROOTFS_SIZE=`btrfs filesystem usage -m / | grep "Device allocated" | awk '{print $3}'` |
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else |
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if [[ "${PORT_OVERLAYROOT}" == "true" ]]; then |
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LOWER_SIZE=$(du -s -k "${LOWER_MOUNTPOINT}" |sed -r -e 's/[[:space:]]+.*$//') |
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UPPER_SIZE=$(du -s -k "${UPPER_MOUNTPOINT}" |sed -r -e 's/[[:space:]]+.*$//') |
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ROOTFS_SIZE=$((LOWER_SIZE+UPPER_SIZE)) |
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else |
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ROOTFS_SIZE=`df ${ROOTFS_MOUNTPOINT} -k --output=used | awk 'NR==2 {print $1}'` |
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fi |
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fi |
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IMAGE_SIZE=$((ROOTFS_SIZE>>10)) |
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IMAGE_SIZE=$((IMAGE_SIZE+IMAGE_SIZE/10+300)) |
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echo -e "MEDIA FREE SPACE SIZE \t $MEDIA_FREE_SPACE \t MBytes" |
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echo -e "EXPORT IMAGE SIZE \t $IMAGE_SIZE \t MBytes" |
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if [[ $MEDIA_FREE_SPACE -lt $IMAGE_SIZE ]]; then |
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echo -e "\033[31m No enough free space on $MOUNT_POINT \033[0m" |
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exit -1 |
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fi |
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[[ $STORE_FS_TYPE != "" ]] || STORE_FS_TYPE=$ROOTFS_TYPE |
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CURDATE=`date "+%Y%m%d%H%M"` |
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OS_D=`lsb_release -d -s` |
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IMAGE_FILE=$DEST_PATH/Firefly_${OS_D// /_}_${STORE_FS_TYPE}_$CURDATE.img |
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TEMP_MOUNT_POINT=`mktemp -d -p $DEST_PATH` |
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set -e |
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trap finish ERR INT |
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if [[ $STORE_FS_TYPE == "btrfs" ]]; then |
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truncate -s ${IMAGE_SIZE}M $IMAGE_FILE |
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mkfs.btrfs -fq -L $ROOTFS_PARTLABEL $IMAGE_FILE |
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mount -t btrfs -o noatime,compress=lzo $IMAGE_FILE $TEMP_MOUNT_POINT |
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btrfs subvolume create $TEMP_MOUNT_POINT/root |
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umount $TEMP_MOUNT_POINT |
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mount -t btrfs -o noatime,compress=lzo,subvol=root $IMAGE_FILE $TEMP_MOUNT_POINT |
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else |
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INODE_COUNT=$(find "${ROOTFS_MOUNTPOINT}" 2>/dev/null | wc -l) |
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INODE_COUNT=$((INODE_COUNT+512)) |
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BLOCK_COUNT=$((2000+(ROOTFS_SIZE+INODE_COUNT/4)*12/10)) |
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echo BLOCK_COUNT $BLOCK_COUNT |
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echo INODE_COUNT $INODE_COUNT |
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mkfs.ext4 -Fq -L $ROOTFS_PARTLABEL -b 1024 -I 128 -N $INODE_COUNT $IMAGE_FILE $BLOCK_COUNT |
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mount $IMAGE_FILE $TEMP_MOUNT_POINT |
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fi |
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echo "sync..." |
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rsync -aqx --delete --exclude={"$IMAGE_FILE","$TEMP_MOUNT_POINT"} ${ROOTFS_MOUNTPOINT} ${TEMP_MOUNT_POINT} |
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echo "sync finish" |
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set +e |
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trap - ERR |
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clead_target_rootfs ${TEMP_MOUNT_POINT} |
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while IFS= read -r LINE |
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do |
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[ "${LINE}" == "/" ] && continue |
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E_FILE="${TEMP_MOUNT_POINT}/${LINE}" |
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[[ -e "${E_FILE}" ]] && rm -rf "${E_FILE}" |
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done < <(findmnt -n -lo TARGET -t ext4,ext3,ext2,vat) |
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umount_img |
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if [[ "${STORE_FS_TYPE}" == "ext4" ]]; then |
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e2fsck -fy ${IMAGE_FILE} 2>&1 > /dev/null |
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tune2fs -C 1 -c 0 -i 0 -e "remount-ro" ${IMAGE_FILE} 2>&1 > /dev/null |
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fi |
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echo -e "\033[31m Export rootfs to $IMAGE_FILE Success \033[0m" |
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