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zhaohe 2 years ago
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  1. 203
      ff_export_rootfs

203
ff_export_rootfs

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