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#!/usr/bin/env bash
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# Copyright (C) 2011-2013 Red Hat, Inc. All rights reserved.
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#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# get.sh: get various values from volumes
#
# USAGE:
# get pv_field PV field [pvs params]
# get vg_field VG field [vgs params]
# get lv_field LV field [lvs params]
#
# 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
local var = ${ 1 % ${ 1 ##*[! ] } } # remove trailing space characters
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 " )
trim_ " $r "
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}
vg_field( ) {
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local r = $( vgs --config 'log{prefix=""}' --noheadings -o " $2 " " ${ @ : 3 } " " $1 " )
trim_ " $r "
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}
lv_field( ) {
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local r = $( lvs --config 'log{prefix=""}' --noheadings -o " $2 " " ${ @ : 3 } " " $1 " )
trim_ " $r "
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}
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lva_field( ) {
local r = $( lvs -a --config 'log{prefix=""}' --noheadings -o " $2 " " ${ @ : 3 } " " $1 " )
trim_ " $r "
}
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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_( ) {
lv_field " $1 " " $2 " -a --unbuffered | sed 's/\[//; s/]//'
}
lv_tree_devices_( ) {
local lv = " $1 / $2 "
local type = $( lv_field " $lv " segtype -a --unbuffered | head -n 1)
local orig = $( lv_field_lv_ " $lv " origin)
# FIXME: should we count in also origins ?
#test -z "$orig" || lv_tree_devices_ $1 $orig
case " $type " in
linear| striped)
lv_devices " $lv "
; ;
mirror| raid*)
local log = $( lv_field_lv_ " $lv " mirror_log)
test -z " $log " || lv_tree_devices_ " $1 " " $log "
for i in $( lv_devices " $lv " )
do lv_tree_devices_ " $1 " " $i " ; done
; ;
thin)
lv_tree_devices_ " $1 " " $( lv_field_lv_ $lv pool_lv) "
; ;
thin-pool)
lv_tree_devices_ " $1 " " $( lv_field_lv_ $lv data_lv) "
lv_tree_devices_ " $1 " " $( lv_field_lv_ $lv metadata_lv) "
; ;
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cache)
lv_tree_devices_ " $1 " " $( lv_devices $lv ) "
; ;
cache-pool)
lv_tree_devices_ " $1 " " $( lv_field_lv_ $lv data_lv) "
lv_tree_devices_ " $1 " " $( lv_field_lv_ $lv metadata_lv) "
; ;
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esac
}
lv_tree_devices( ) {
lv_tree_devices_ " $@ " | sort | uniq
}
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first_extent_sector( ) {
pv_field " $@ " pe_start --units s --nosuffix
}
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#set -x
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unset LVM_VALGRIND
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" $@ "