1#!/bin/sh
2# Copyright (C) 2008 Red Hat, Inc. All rights reserved.
3#
4# This copyrighted material is made available to anyone wishing to use,
5# modify, copy, or redistribute it subject to the terms and conditions
6# of the GNU General Public License v.2.
7#
8# You should have received a copy of the GNU General Public License
9# along with this program; if not, write to the Free Software Foundation,
10# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
11
12#
13# tests basic functionality of read-ahead and ra regressions
14#
15
16test_description='Test read-ahead functionality'
17
18. ./test-utils.sh
19
20
21get_lvs_() {
22   lvs --units s --nosuffix --noheadings -o $1 "$vg"/"$lv"
23}
24
25check_lvs_() {
26   case $(get_lvs_ $1) in
27    *$2) true ;;
28    *) false ;;
29   esac
30}
31
32aux prepare_vg 5
33
34#COMM "test various read ahead settings (bz450922)"
35lvcreate -n "$lv" -l 100%FREE -i5 -I256 "$vg"
36ra="$(get_lvs_ lv_kernel_read_ahead)"
37test "$(( ( $ra / 5 ) * 5 ))" -eq $ra
38lvdisplay "$vg"/"$lv"
39lvchange -r auto "$vg"/"$lv" 2>&1 | grep auto
40check_lvs_ lv_read_ahead auto
41check_lvs_ lv_kernel_read_ahead 5120
42lvchange -r 640 "$vg/$lv"
43check_lvs_ lv_read_ahead 640
44lvremove -ff "$vg"
45
46#COMM "read ahead is properly inherited from underlying PV"
47blockdev --setra 768 $dev1
48lvcreate -n $lv -L4m $vg $dev1
49test $(blockdev --getra $G_dev_/$vg/$lv) -eq 768
50lvremove -ff $vg
51
52# Check default, active/inactive values for read_ahead / kernel_read_ahead
53lvcreate -n $lv -l 50%FREE $vg
54lvchange -an $vg/$lv
55check_lv_field_ $vg/$lv lv_read_ahead auto
56check_lv_field_ $vg/$lv lv_kernel_read_ahead -1
57lvchange -r 512 $vg/$lv
58lvchange -ay $vg/$lv
59check_lv_field_ $vg/$lv lv_read_ahead 256.00k
60check_lv_field_ $vg/$lv lv_kernel_read_ahead 256.00k
61lvremove -ff $vg
62