mirror of https://github.com/lukechilds/umbrel.git
GitHub
4 changed files with 173 additions and 32 deletions
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#!/usr/bin/env bash |
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set -euo pipefail |
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# This script will: |
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# - Look for external storage devices |
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# - Check if they contain an Umbrel install |
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# - If yes |
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# - - Mount it |
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# - If no |
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# - - Format it |
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# - - Mount it |
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# - - Install Umbrel on it |
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# - Bind mount the external installation on top of the local installation |
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UMBREL_ROOT="$(readlink -f $(dirname "${BASH_SOURCE[0]}")/../..)" |
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MOUNT_POINT="/mnt/data" |
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EXTERNAL_UMBREL_ROOT="${MOUNT_POINT}/umbrel" |
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check_root () { |
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if [[ $UID != 0 ]]; then |
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echo "This script must be run as root" |
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exit 1 |
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fi |
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} |
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check_dependencies () { |
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for cmd in "$@"; do |
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if ! command -v $cmd >/dev/null 2>&1; then |
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echo "This script requires \"${cmd}\" to be installed" |
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exit 1 |
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fi |
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done |
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} |
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# Returns a list of block device paths |
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list_block_devices () { |
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# We use "2>/dev/null || true" to swallow errors if there are |
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# no block devices. In that case the function just returns nothing |
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# instead of an error which is what we want. |
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# |
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# sed 's!.*/!!' is to return the device path so we get sda |
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# instead of /sys/block/sda |
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(ls -d /sys/block/sd* 2>/dev/null || true) | sed 's!.*/!!' |
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} |
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# Returns the vendor and model name of a block device |
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get_block_device_model () { |
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device="${1}" |
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vendor=$(cat "/sys/block/${device}/device/vendor") |
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model=$(cat "/sys/block/${device}/device/model") |
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# We echo in a subshell without quotes to strip surrounding whitespace |
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echo "$(echo $vendor) $(echo $model)" |
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} |
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# Wipes a block device and reformats it with a single EXT4 partition |
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format_block_device () { |
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device="${1}" |
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device_path="/dev/${device}" |
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partition_path="${device_path}1" |
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wipefs -a "${device_path}" |
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parted --script "${device_path}" mklabel gpt |
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parted --script "${device_path}" mkpart primary ext4 0% 100% |
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# We need to run sync here to make sure the filesystem is reflecting the |
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# the latest changes in /dev/* |
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sync |
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mkfs.ext4 -F -L umbrel "${partition_path}" |
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} |
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# Mounts the device given in the first argument at $MOUNT_POINT |
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mount_partition () { |
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partition_path="${1}" |
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mkdir -p "${MOUNT_POINT}" |
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mount "${partition_path}" "${MOUNT_POINT}" |
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} |
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# Unmounts $MOUNT_POINT |
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unmount_partition () { |
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umount "${MOUNT_POINT}" |
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} |
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main () { |
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echo "Running external storage mount script..." |
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check_root |
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check_dependencies sed wipefs parted mount sync |
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block_devices=$(list_block_devices) |
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no_of_block_devices=$(list_block_devices | wc -l) |
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if [[ $no_of_block_devices -lt 1 ]]; then |
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echo "No block devices found" |
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echo "Exiting mount script without doing anything" |
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exit |
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fi |
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if [[ $no_of_block_devices -gt 1 ]]; then |
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echo "Multiple block devices found, only one drive is supported" |
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echo "Exiting mount script without doing anything" |
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exit 1 |
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fi |
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# At this point we know there is only one block device attached |
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block_device=$block_devices |
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partition_path="/dev/${block_device}1" |
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block_device_model=$(get_block_device_model $block_device) |
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echo "Found device \"${block_device_model}\"" |
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echo "Checking if device contains an Umbrel install..." |
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mount_partition "${partition_path}" |
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if [[ -f "${EXTERNAL_UMBREL_ROOT}"/.umbrel ]]; then |
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echo "Yes, it does" |
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else |
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echo "No, it doesn't" |
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echo "Unmounting partition..." |
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unmount_partition |
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echo "Formatting device..." |
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format_block_device $block_device |
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echo "Mounting partition..." |
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mount_partition "${partition_path}" |
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echo "Copying Umbrel install to external storage..." |
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mkdir -p "${EXTERNAL_UMBREL_ROOT}" |
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cp --recursive \ |
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--archive \ |
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--no-target-directory \ |
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"${UMBREL_ROOT}" "${EXTERNAL_UMBREL_ROOT}" |
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fi |
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echo "Bind mounting external storage over local Umbrel installation..." |
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mount --bind "${EXTERNAL_UMBREL_ROOT}" "${UMBREL_ROOT}" |
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echo "Checking Umbrel root is now on external storage..." |
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sync |
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sleep 1 |
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"${UMBREL_ROOT}/scripts/umbrel-os/is-on-external-storage" |
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echo "Mount script completed successfully!" |
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} |
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main |
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@ -0,0 +1,10 @@ |
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#!/usr/bin/env bash |
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set -euo pipefail |
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# This script returns a non-zero exit code if $UMBREL_ROOT is NOT |
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# mounted on external storage. |
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UMBREL_ROOT="$(readlink -f $(dirname "${BASH_SOURCE[0]}")/../..)" |
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df -h "${UMBREL_ROOT}" | grep --quiet '/dev/sd' |
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