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    #!/bin/bash

    #1.boot from live CD, part the new HDD, mount original HDD and new HDD
    #2.migrate rootfs
    #NOTE: This will flush the console, and you can't see the error.
    #NOTE: -a = archive mode, -v = -vebose, -h = -human-readable, -P = same as --partial --progress, -H = --hard-links, -A = --acls, -X = --xattrs, -x = --one-file-system.
    # --partial 默认情况下，如果传输中断，rsync将删除任何部分传输的文件。在某些情况下，更需要保留部分传输的文件。使用 --partial选项告诉rsync保留部分文件，这应该使文件的其余部分的后续传输更快; --process 显示传输进度
    #FIXME: option -q will suppress non-error messages, maybe conflict with -P
    rsync -avhPHAXx --exclude={/dev/*,/proc/*,/sys/*,/tmp/*,/run/*,/mnt/*,/media/*,/lost+found} old_disk new_disk
    #3.migrate the boot partition
    rsync -avhPHAXx --exclude={/lost+found} old_boot new_boot
    #NOTE: diff -r src_dir dest_dir, may help check the file consistence

    #4.mount necessary system partition and chroot in new HDD
    mount --types proc /proc /mnt/new_rootfs/proc
    mount --rbind /sys /mnt/new_rootfs/sys
    mount --make-rslave /mnt/new_rootfs/sys
    mount --rbind /dev /mnt/new_rootfs/dev
    mount --make-rslave /mnt/new_rootfs/dev

    chroot /mnt/new_disk /bin/bash
    source /etc/profile
    export PS1="(chroot) $PS1"

    #5.install grub and make new grub config file
    grub-install --recheck /dev/sdX
    grub-mkconfig -o /boot/grub/grub.cfg

sudo btrfs subvolume create /swap
sudo truncate -s 0 /swap/swapfile
sudo chattr +C /swap/swapfile
sudo btrfs property set /swap/swapfile compression none
sudo dd if=/dev/zero of=/swap/swapfile bs=1G count=64 status=progress
sudo chmod 600 /swap/swapfile
sudo mkswap /swap/swapfile
sudo swapon /swap/swapfile

acme.sh --issue --dns dns_cf -d *.codeplayer.org
acme.sh --install-cert -d '*.codeplayer.org' --key-file /etc/nginx/key.pem --fullchain-file /etc/nginx/fullchain.pem --reloadcmd "systemctl reload nginx"
acme.sh --install-cronjob

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