emissary-firmware/misc/common/uci-defaults/20-emissary-create-data-par...

79 lines
2.5 KiB
Bash

#!/bin/sh
MIN_DISK_SPACE_MB=1000
list_disks() {
lsblk -o NAME -r -d -n
}
main() {
local disks=$(list_disks)
local found_free_space=0
local found_device=""
for device_name in ${disks}; do
local device="/dev/${device_name}"
echo "Checking disk '$device'..."
local disk_free_space="$(parted $device unit MB print free 2>/dev/null | grep 'Free Space' | tail -n1 | awk '{ print $3 }')"
disk_free_space=${disk_free_space%MB}
disk_free_space=$(printf '%.0f' "${disk_free_space:-0}")
echo "Free space on disk: ${disk_free_space}"
if [ ! -z "${disk_free_space}" ]; then
if [ ${disk_free_space} -gt ${found_free_space} ]; then
found_free_space=${disk_free_space}
found_device=${device}
fi
fi
done
if [ -z "${found_device}" ] || [ ${MIN_DISK_SPACE_MB} -gt ${found_free_space} ]; then
echo "No device with sufficient remaining disk space, exiting."
exit 1
fi
echo "Creating new partition on '${found_device}' with remaining disk free space"
local last_partition_end_mb=$(parted "$found_device" unit MB print | awk '/^ [0-9]+ / {start=$3} END {print int(start)}')
if [ "${last_partition_end_mb}" != "0" ]; then
parted -s "${found_device}" -f -a opt mkpart primary "${last_partition_end_mb}MB" '100%'
else
parted -s "${found_device}" -f -a opt mkpart primary '0%' '100%'
fi
sync
local last_partition_number=$(parted ${found_device} print | grep -o -e '^ [0-9]*' | awk '{print $1}' | tail -n 1)
local new_partition_device=$(lsblk -r -n -o PARTN,NAME ${found_device} | awk -v partition_number="${last_partition_number}" '$1 == partition_number {print $2}')
mkfs.ext4 -F /dev/${new_partition_device}
if [ $? -ne 0 ]; then
echo "Could not initialize filesystem on new partition !"
exit 1
fi
local new_partition_uuid=$(lsblk -r -n -o PARTN,UUID ${found_device} | awk -v partition_number="${last_partition_number}" '$1 == partition_number {print $2}')
if [ -z "${new_partition_uuid}" ]; then
echo "Could not find partition with number '${last_partition_number}' !"
exit 1
fi
umount -f /data
rm -rf /data
mkdir -p /data
uci add fstab mount
uci set fstab.@mount[-1].target='/data'
uci set fstab.@mount[-1].uuid=${new_partition_uuid}
uci set fstab.@mount[-1].enabled='1'
uci commit fstab
reload_config
}
main