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311 lines
5.0 KiB
311 lines
5.0 KiB
#!/bin/sh
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cmd="$1"
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shift
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if [ "$cmd" = "name" ]; then
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echo "LVM"
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return 0
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fi
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command -v lvm >/dev/null || return 1
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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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export_bootdevice
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[ "$BOOTDEV_MAJOR" ] || return 1
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export_partdevice rootdev 0
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[ "$rootdev" ] || return 1
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case "$rootdev" in
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mtd*|\
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ram*|\
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ubi*)
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return 1
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esac
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lvm_cmd() {
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local cmd="$1"
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shift
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LVM_SUPPRESS_FD_WARNINGS=1 lvm "$cmd" "$@"
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}
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pvs() {
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lvm_cmd pvs --reportformat json --units b "$@"
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}
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vgs() {
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lvm_cmd vgs --reportformat json --units b "$@"
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}
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lvs() {
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lvm_cmd lvs --reportformat json --units b "$@"
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}
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freebytes() {
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echo $(($vg_free_count * $vg_extent_size * 1024))
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}
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totalbytes() {
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echo $(($vg_extent_count * $vg_extent_size * 1024))
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}
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existvol() {
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[ "$1" ] || return 1
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test -e "/dev/$vg_name/ro_$1" || test -e "/dev/$vg_name/rw_$1"
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return $?
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}
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vg_name=
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exportpv() {
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local reports rep pv pvs
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vg_name=
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json_init
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json_load "$(pvs -o vg_name -S "pv_name=~^/dev/$rootdev.*\$")"
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json_select report
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json_get_keys reports
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for rep in $reports; do
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json_select "$rep"
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json_select pv
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json_get_keys pvs
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for pv in $pvs; do
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json_select "$pv"
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json_get_vars vg_name
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json_select ..
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break
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done
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json_select ..
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break
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done
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}
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vg_extent_size=
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vg_extent_count=
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vg_free_count=
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exportvg() {
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local reports rep vg vgs
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vg_extent_size=
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vg_extent_count=
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vg_free_count=
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json_init
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json_load "$(vgs -o vg_extent_size,vg_extent_count,vg_free_count -S "vg_name=$vg_name")"
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json_select report
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json_get_keys reports
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for rep in $reports; do
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json_select "$rep"
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json_select vg
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json_get_keys vgs
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for vg in $vgs; do
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json_select "$vg"
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json_get_vars vg_extent_size vg_extent_count vg_free_count
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vg_extent_size=${vg_extent_size%B}
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json_select ..
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break
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done
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json_select ..
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break
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done
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}
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lv_full_name=
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lv_path=
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lv_dm_path=
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lv_size=
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exportlv() {
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local reports rep lv lvs
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lv_full_name=
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lv_path=
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lv_dm_path=
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lv_size=
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json_init
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json_load "$(lvs -o lv_full_name,lv_size,lv_path,lv_dm_path -S "lv_name=~^[rw][ow]_$1\$ && vg_name=$vg_name")"
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json_select report
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json_get_keys reports
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for rep in $reports; do
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json_select "$rep"
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json_select lv
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json_get_keys lvs
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for lv in $lvs; do
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json_select "$lv"
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json_get_vars lv_full_name lv_size lv_path lv_dm_path
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lv_size=${lv_size%B}
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json_select ..
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break
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done
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json_select ..
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break
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done
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}
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getdev() {
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existvol "$1" || return 1
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exportlv "$1"
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echo $lv_dm_path
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}
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getsize() {
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exportlv "$1"
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[ "$lv_size" ] && echo $lv_size
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}
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activatevol() {
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exportlv "$1"
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case "$lv_path" in
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/dev/*/wo_*)
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return 22
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;;
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*)
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lvm_cmd lvchange -a y "$lv_full_name"
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return 0
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;;
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esac
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}
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disactivatevol() {
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exportlv "$1"
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lvm_cmd lvchange -a n "$lv_full_name"
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}
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getstatus() {
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exportlv "$1"
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[ "$lv_full_name" ] || return 2
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existvol "$1" || return 1
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return 0
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}
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createvol() {
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local mode lvmode ret
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local volsize=$(($2))
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[ "$volsize" ] || return 22
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exportlv "$1"
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[ "$lv_size" ] && return 17
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size_ext=$((volsize / vg_extent_size))
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[ $((size_ext * vg_extent_size)) -lt $volsize ] && size_ext=$((size_ext + 1))
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case "$3" in
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ro|wo)
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lvmode=r
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mode=wo
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;;
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rw)
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lvmode=rw
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mode=rw
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;;
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*)
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return 22
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;;
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esac
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lvm_cmd lvcreate -p $lvmode -a n -y -W n -Z n -n "${mode}_${1}" -l "$size_ext" $vg_name
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ret=$?
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if [ ! $ret -eq 0 ] || [ "$lvmode" = "r" ]; then
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return $ret
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fi
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exportlv "$1"
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[ "$lv_full_name" ] || return 22
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lvm_cmd lvchange -a y "$lv_full_name" || return 1
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if [ $lv_size -gt $(( 100 * 1024 * 1024 )) ]; then
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mkfs.f2fs -f -l "$1" "$lv_path" || return 1
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else
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mke2fs -F -L "$1" "$lv_path" || return 1
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fi
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return 0
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}
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removevol() {
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exportlv "$1"
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[ "$lv_full_name" ] || return 2
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lvm_cmd lvremove -y "$lv_full_name"
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}
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updatevol() {
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exportlv "$1"
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[ "$lv_full_name" ] || return 2
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[ $lv_size -ge $2 ] || return 27
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case "$lv_path" in
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/dev/*/wo_*)
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lvm_cmd lvchange -a y -p rw "$lv_full_name"
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dd of=$lv_path
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lvm_cmd lvchange -p r "$lv_full_name"
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lvm_cmd lvrename "$lv_full_name" "${lv_full_name%%/*}/ro_$1"
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return 0
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;;
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default)
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return 22
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;;
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esac
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}
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listvols() {
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local reports rep lv lvs lv_name lv_size lv_mode volname
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volname=${1:-.*}
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json_init
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json_load "$(lvs -o lv_name,lv_size -S "lv_name=~^[rw][ow]_$volname\$ && vg_name=$vg_name")"
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json_select report
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json_get_keys reports
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for rep in $reports; do
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json_select "$rep"
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json_select lv
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json_get_keys lvs
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for lv in $lvs; do
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json_select "$lv"
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json_get_vars lv_name lv_size
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lv_mode="${lv_name:0:2}"
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lv_name="${lv_name:3}"
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lv_size=${lv_size%B}
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echo "$lv_name $lv_mode $lv_size"
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json_select ..
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done
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json_select ..
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break
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done
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}
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exportpv
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exportvg
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case "$cmd" in
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align)
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echo "$vg_extent_size"
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;;
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free)
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freebytes
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;;
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total)
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totalbytes
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;;
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list)
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listvols "$@"
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;;
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create)
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createvol "$@"
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;;
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remove)
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removevol "$@"
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;;
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device)
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getdev "$@"
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;;
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size)
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getsize "$@"
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;;
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up)
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activatevol "$@"
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;;
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down)
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disactivatevol "$@"
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;;
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status)
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getstatus "$@"
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;;
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write)
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updatevol "$@"
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;;
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*)
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echo "unknown command"
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return 1
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;;
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esac
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