1b570f7aad
Use sfdisk to get GPT partition by name as partition names are not known by the kernel if added via partx. Make sure physical volume names are unique, if possible correlate with the disks serial number and/or card's cid. mkf2fs apparently returns 134 even in case format succeeded, so don't fail in that case (this fixes rw volumes large enough for F2FS to be selected by the lvm scripts of uvol). Signed-off-by: Daniel Golle <daniel@makrotopia.org>
99 lines
2.1 KiB
Bash
99 lines
2.1 KiB
Bash
#!/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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get_partition_by_name_gpt() {
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local dev="$1"
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local part parts node name
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json_load "$(sfdisk -J "/dev/$dev" 2>/dev/null)"
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json_select "partitiontable" || 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 [ "$2" = "$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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}
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part_fixup() {
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echo "write" | sfdisk --force -q -w never $1
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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 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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*"M")
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[ "${size%%M}" -lt 100 ] && continue
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;;
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*"G" | *"T")
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;;
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*"k" | *"b")
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continue
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;;
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esac
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[ "$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
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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/$diskdev || return
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lvmpart=$(get_partition_by_name_gpt $diskdev $OWRT_VOLUMES)
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[ "$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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