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lvm2/test/t-lvextend-percent-extents.sh

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#!/bin/sh
# Copyright (C) 2008 Red Hat, Inc. All rights reserved.
#
# 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
# 'Check extents percentage arguments'
. ./test-utils.sh
aux prepare_vg 2 128
lvcreate -L 64M -n $lv $vg
# 'lvextend rejects both size and extents without PVs'
not lvextend -l 10 -L 64M $vg/$lv 2>err
grep "^ Please specify either size or extents but not both.\$" err
# 'lvextend rejects both size and extents with PVs'
not lvextend -l 10 -L 64M $vg/$lv $dev1 2>err
grep "^ Please specify either size or extents but not both.\$" err
# 'lvextend accepts no size or extents but one PV - bz154691'
lvextend $vg/$lv $dev1 >out
grep "^ Logical volume $lv successfully resized\$" out
check_pv_field_ $dev1 pv_free "0"
# 'Reset LV to original size'
lvremove -f $vg/$lv
lvcreate -L 64M -n $lv $vg
# 'lvextend accepts no size but extents 100%PVS and two PVs - bz154691'
lvextend -l +100%PVS $vg/$lv $dev1 $dev2 >out
grep "^ Logical volume $lv successfully resized\$" out
check_pv_field_ $dev1 pv_free "0"
check_pv_field_ $dev2 pv_free "0"
# Exercise the range overlap code. Allocate every 2 extents.
#
# Physical Extents
# 1 2
#012345678901234567890123
#
#aaXXaaXXaaXXaaXXaaXXaaXX - (a)llocated
#rrrXXXrrrXXXrrrXXXrrrXXX - (r)ange on cmdline
#ooXXXXXXoXXXooXXXXXXoXXX - (o)verlap of range and allocated
#
# Key: a - allocated
# F - free
# r - part of a range on the cmdline
# N - not on cmdline
#
# Create the LV with 12 extents, allocated every other 2 extents.
# Then extend it, with a range of PVs on the cmdline of every other 3 extents.
# Total number of extents should be 12 + overlap = 12 + 6 = 18.
# Thus, total size for the LV should be 18 * 4M = 72M
#
# 'Reset LV to 12 extents, allocate every other 2 extents'
create_pvs=`for i in $(seq 0 4 20); do echo -n "\$dev1:$i-$(($i + 1)) "; done`
lvremove -f $vg/$lv
lvcreate -l 12 -n $lv $vg $create_pvs
check_lv_field_ $vg/$lv lv_size "48.00M"
# 'lvextend with partially allocated PVs and extents 100%PVS with PE ranges'
extend_pvs=`for i in $(seq 0 6 18); do echo -n "\$dev1:$i-$(($i + 2)) "; done`
lvextend -l +100%PVS $vg/$lv $extend_pvs >out
grep "^ Logical volume $lv successfully resized\$" out
check_lv_field_ $vg/$lv lv_size "72.00M"