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127 lines
2.7 KiB
127 lines
2.7 KiB
#!/bin/sh
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. /lib/functions.sh
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. /lib/upgrade/common.sh
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. /usr/share/libubox/jshn.sh
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OWRT_VOLUMES=owrt-volumes
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load_partitions() {
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local dev="$1"
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json_init
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json_load "$(sfdisk -J "$dev" 2>/dev/null)"
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json_select "partitiontable" || return 1
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return 0
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}
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get_partition_by_name_gpt() {
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local label part parts node name
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json_get_vars label
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[ "$label" = "gpt" ] || return
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json_select "partitions" || return
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json_get_keys parts
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for part in $parts; do
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json_select "$part"
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json_get_vars node name
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if [ "$1" = "$name" ]; then
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echo "$node"
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break
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fi
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json_select ..
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done
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json_select ..
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}
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get_partition_by_type_mbr() {
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local label part parts node type
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json_get_vars label
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[ "$label" = "dos" ] || return
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json_select "partitions" || return
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json_get_keys parts
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for part in $parts; do
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json_select "$part"
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json_get_vars node type
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if [ "$1" = "$type" ]; then
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echo "$node"
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break
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fi
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json_select ..
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done
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json_select ..
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}
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part_fixup() {
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echo "write" | sfdisk --force -q -w never "$1" 1>/dev/null 2>/dev/null
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}
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get_free_area() {
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local found=
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sfdisk -q -F "$1" 2>/dev/null | while read -r start end sectors size; do
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case $start in
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*"Unpartitioned"* | *"Units:"* | *"Sector"* | *"Start"* )
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continue
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;;
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[0-9]*)
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case "$size" in
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*"k" | *"b")
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continue
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;;
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*"M")
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[ "${size%%.*M}" -lt 100 ] && continue
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;;
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*"G" | *"T")
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;;
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esac
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[ "$found" ] || echo "start=$start, size=$((end - start))"
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found=1
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;;
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esac
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done
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}
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create_lvm_part() {
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local disk="$1"
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local freepart
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freepart="$(get_free_area "$disk")"
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if [ "$freepart" ]; then
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echo "$freepart, type=lvm, name=$OWRT_VOLUMES" | sfdisk --force -w never -a "$disk" || return 1
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partx -a "$disk" 1>/dev/null 2>/dev/null || true
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return 0
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else
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return 1
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fi
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}
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lvm_init() {
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lvm pvcreate -f "$1"
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lvm vgcreate "$2" "$1"
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lvm vgs
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}
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autopart_init() {
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local diskdev
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local lvmpart
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local diskserial diskhash
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export_bootdevice && export_partdevice diskdev 0
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[ "$diskdev" ] || return
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[ -e "/sys/class/block/$diskdev/device/serial" ] && diskserial="$(cat "/sys/class/block/$diskdev/device/serial")"
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[ -e "/sys/class/block/$diskdev/device/cid" ] && diskserial="$diskserial$(cat "/sys/class/block/$diskdev/device/cid")"
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[ "$diskserial" ] || diskserial="$(cat /proc/sys/kernel/random/uuid)"
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diskhash="$(echo "$diskserial" | sha256sum | cut -d' ' -f1)"
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part_fixup "/dev/$diskdev"
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create_lvm_part "/dev/$diskdev" || return
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load_partitions "/dev/$diskdev" || return
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lvmpart="$(get_partition_by_name_gpt "$OWRT_VOLUMES")"
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[ "$lvmpart" ] || lvmpart="$(get_partition_by_type_mbr "8e")"
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[ "$lvmpart" ] || return
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lvm_init "$lvmpart" "${OWRT_VOLUMES}-${diskhash:0:16}"
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}
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autopart_init
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exit 0
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