119 lines
2.6 KiB
Bash
119 lines
2.6 KiB
Bash
#!/bin/sh
|
|
|
|
. /lib/functions.sh
|
|
. /lib/upgrade/common.sh
|
|
. /usr/share/libubox/jshn.sh
|
|
|
|
OWRT_VOLUMES=owrt-volumes
|
|
|
|
load_partitions() {
|
|
local dev="$1"
|
|
json_init
|
|
json_load "$(sfdisk -J "$dev" 2>/dev/null)"
|
|
json_select "partitiontable" || return 1
|
|
return 0
|
|
}
|
|
|
|
get_partition_by_name_gpt() {
|
|
local label part parts node name
|
|
json_get_vars label
|
|
[ "$label" = "gpt" ] || return
|
|
json_select "partitions" || return
|
|
json_get_keys parts
|
|
for part in $parts; do
|
|
json_select "$part"
|
|
json_get_vars node name
|
|
if [ "$1" = "$name" ]; then
|
|
echo "$node"
|
|
break
|
|
fi
|
|
json_select ..
|
|
done
|
|
json_select ..
|
|
}
|
|
|
|
get_partition_by_type_mbr() {
|
|
local label part parts node type
|
|
json_get_vars label
|
|
[ "$label" = "dos" ] || return
|
|
json_select "partitions" || return
|
|
json_get_keys parts
|
|
for part in $parts; do
|
|
json_select "$part"
|
|
json_get_vars node type
|
|
if [ "$1" = "$type" ]; then
|
|
echo "$node"
|
|
break
|
|
fi
|
|
json_select ..
|
|
done
|
|
json_select ..
|
|
}
|
|
|
|
part_fixup() {
|
|
echo "write" | sfdisk --force -q -w never "$1" 1>/dev/null 2>/dev/null
|
|
}
|
|
|
|
get_free_area() {
|
|
local found=
|
|
sfdisk --bytes -q -F "$1" 2>/dev/null | while read -r start end sectors size; do
|
|
case $start in
|
|
*"Unpartitioned"* | *"Units:"* | *"Sector"* | *"Start"* )
|
|
continue
|
|
;;
|
|
[0-9]*)
|
|
[ "$size" -lt $((100 * 1024 * 1024)) ] && continue
|
|
[ "$found" ] || echo "start=$start, size=$sectors"
|
|
found=1
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
create_lvm_part() {
|
|
local disk="$1"
|
|
local freepart
|
|
|
|
freepart="$(get_free_area "$disk")"
|
|
if [ "$freepart" ]; then
|
|
echo "$freepart, type=lvm, name=$OWRT_VOLUMES" | sfdisk --force -w never -a "$disk" || return 1
|
|
partx -a "$disk" 1>/dev/null 2>/dev/null || true
|
|
return 0
|
|
else
|
|
return 1
|
|
fi
|
|
}
|
|
|
|
lvm_init() {
|
|
lvm pvcreate -f "$1"
|
|
lvm vgcreate "$2" "$1"
|
|
lvm vgs
|
|
}
|
|
|
|
autopart_init() {
|
|
local diskdev
|
|
local lvmpart
|
|
local diskserial diskhash
|
|
|
|
export_bootdevice && export_partdevice diskdev 0
|
|
|
|
[ "$diskdev" ] || return
|
|
|
|
[ -e "/sys/class/block/$diskdev/device/serial" ] && diskserial="$(cat "/sys/class/block/$diskdev/device/serial")"
|
|
[ -e "/sys/class/block/$diskdev/device/cid" ] && diskserial="$diskserial$(cat "/sys/class/block/$diskdev/device/cid")"
|
|
[ "$diskserial" ] || diskserial="$(cat /proc/sys/kernel/random/uuid)"
|
|
diskhash="$(echo "$diskserial" | sha256sum | cut -d' ' -f1)"
|
|
|
|
part_fixup "/dev/$diskdev"
|
|
create_lvm_part "/dev/$diskdev" || return
|
|
load_partitions "/dev/$diskdev" || return
|
|
lvmpart="$(get_partition_by_name_gpt "$OWRT_VOLUMES")"
|
|
[ "$lvmpart" ] || lvmpart="$(get_partition_by_type_mbr "8e")"
|
|
[ "$lvmpart" ] || return
|
|
|
|
lvm_init "$lvmpart" "${OWRT_VOLUMES}-${diskhash:0:16}"
|
|
}
|
|
|
|
autopart_init
|
|
exit 0
|