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git://sourceware.org/git/lvm2.git
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108 lines
2.7 KiB
Bash
108 lines
2.7 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2011-2013 Red Hat, Inc. All rights reserved.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# get.sh: get various values from volumes
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#
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# USAGE:
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# get pv_field PV field [pvs params]
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# get vg_field VG field [vgs params]
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# get lv_field LV field [lvs params]
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#
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# get lv_devices LV [lvs params]
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test -z "$BASH" || set -e -o pipefail
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# trims only leading prefix and suffix
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trim_() {
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rm -f debug.log # drop log, command was ok
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local var=${1%${1##*[! ]}} # remove trailing space characters
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echo "${var#${var%%[! ]*}}" # remove leading space characters
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}
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pv_field() {
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local r=$(pvs --config 'log{prefix=""}' --noheadings -o "$2" "${@:3}" "$1")
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trim_ "$r"
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}
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vg_field() {
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local r=$(vgs --config 'log{prefix=""}' --noheadings -o "$2" "${@:3}" "$1")
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trim_ "$r"
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}
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lv_field() {
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local r=$(lvs --config 'log{prefix=""}' --noheadings -o "$2" "${@:3}" "$1")
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trim_ "$r"
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}
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lvh_field() {
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local r=$(lvs -H --config 'log{prefix=""}' --noheadings -o "$2" "${@:3}" "$1")
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trim_ "$r"
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}
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lva_field() {
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local r=$(lvs -a --config 'log{prefix=""}' --noheadings -o "$2" "${@:3}" "$1")
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trim_ "$r"
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}
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lv_devices() {
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lv_field "$1" devices -a "${@:2}" | sed 's/([^)]*)//g; s/,/\n/g'
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}
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lv_field_lv_() {
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lv_field "$1" "$2" -a --unbuffered | sed 's/\[//; s/]//'
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}
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lv_tree_devices_() {
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local lv="$1/$2"
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local type=$(lv_field "$lv" segtype -a --unbuffered | head -n 1)
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local orig=$(lv_field_lv_ "$lv" origin)
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# FIXME: should we count in also origins ?
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#test -z "$orig" || lv_tree_devices_ $1 $orig
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case "$type" in
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linear|striped)
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lv_devices "$lv"
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;;
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mirror|raid*)
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local log=$(lv_field_lv_ "$lv" mirror_log)
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test -z "$log" || lv_tree_devices_ "$1" "$log"
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for i in $(lv_devices "$lv")
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do lv_tree_devices_ "$1" "$i"; done
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;;
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thin)
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lv_tree_devices_ "$1" "$(lv_field_lv_ $lv pool_lv)"
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;;
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thin-pool)
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lv_tree_devices_ "$1" "$(lv_field_lv_ $lv data_lv)"
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lv_tree_devices_ "$1" "$(lv_field_lv_ $lv metadata_lv)"
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;;
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cache)
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lv_tree_devices_ "$1" "$(lv_devices $lv)"
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;;
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cache-pool)
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lv_tree_devices_ "$1" "$(lv_field_lv_ $lv data_lv)"
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lv_tree_devices_ "$1" "$(lv_field_lv_ $lv metadata_lv)"
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;;
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esac
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}
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lv_tree_devices() {
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lv_tree_devices_ "$@" | sort | uniq
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}
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first_extent_sector() {
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pv_field "$@" pe_start --units s --nosuffix
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}
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#set -x
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unset LVM_VALGRIND
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unset LVM_LOG_FILE_EPOCH
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"$@"
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