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lvm2/test/t-mirror-basic.sh

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#!/bin/sh
# Copyright (C) 2008 Red Hat, Inc. All rights reserved.
# Copyright (C) 2007 NEC Corporation
#
# 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
test_description="ensure that basic operations on mirrored LV works"
. ./test-utils.sh
dmsetup_has_dm_devdir_support_ || exit 200
# ---------------------------------------------------------------------
# Utilities
lvdev_()
{
echo "$G_dev_/$1/$2"
}
mimages_are_redundant_ ()
{
local vg=$1
local lv=$vg/$2
local i
rm -f out
for i in $(lvs -odevices --noheadings $lv | sed 's/([^)]*)//g; s/,/ /g'); do
lvs -a -odevices --noheadings $vg/$i | sed 's/([^)]*)//g; s/,/ /g' | \
sort | uniq >> out
done
# if any duplication is found, it's not redundant
sort out | uniq -d | grep . && return 1
return 0
}
lv_is_contiguous_ ()
{
local lv=$1
# if the lv has multiple segments, it's not contiguous
[ $(lvs -a --segments --noheadings $lv | wc -l) -ne 1 ] && return 1
return 0
}
lv_is_clung_ ()
{
local lv=$1
# if any duplication is found, it's not redundant
[ $(lvs -a -odevices --noheadings $lv | sed 's/([^)]*)//g' | \
sort | uniq | wc -l) -ne 1 ] && return 1
return 0
}
mimages_are_contiguous_ ()
{
local vg=$1
local lv=$vg/$2
local i
for i in $(lvs -odevices --noheadings $lv | sed 's/([^)]*)//g; s/,/ /g'); do
lv_is_contiguous_ $vg/$i || return 1
done
return 0
}
mimages_are_clung_ ()
{
local vg=$1
local lv=$vg/$2
local i
for i in $(lvs -odevices --noheadings $lv | sed 's/([^)]*)//g; s/,/ /g'); do
lv_is_clung_ $vg/$i || return 1
done
return 0
}
mirrorlog_is_on_()
{
local lv="$1"_mlog
shift 1
lvs -a -odevices --noheadings $lv | sed 's/,/\n/g' > out
for d in $*; do grep "$d(" out; done
for d in $*; do ! grep -v "$d(" out; done
return 0
}
save_dev_sum_()
{
mkfs.ext3 $1 > /dev/null &&
md5sum $1 > md5.$(basename $1)
}
check_dev_sum_()
{
md5sum $1 > md5.tmp && cmp md5.$(basename $1) md5.tmp
}
# ---------------------------------------------------------------------
# Initialize PVs and VGs
aux prepare_vg 5 80
# ---------------------------------------------------------------------
# Common environment setup/cleanup for each sub testcases
prepare_lvs_()
{
lvremove -ff $vg;
:
}
check_and_cleanup_lvs_()
{
lvs -a -o+devices $vg
lvremove -ff $vg
}
#COMM "check environment setup/cleanup"
prepare_lvs_
check_and_cleanup_lvs_
# ---------------------------------------------------------------------
# mirrored LV tests
# ---
# create
#COMM "create 2-way mirror with disklog from 3 PVs"
prepare_lvs_
lvcreate -l2 -m1 -n $lv1 $vg $dev1 $dev2 $dev3:0-1
mimages_are_redundant_ $vg $lv1
mirrorlog_is_on_ $vg/$lv1 $dev3
check_and_cleanup_lvs_
#COMM "create 2-way mirror with corelog from 2 PVs"
prepare_lvs_
lvcreate -l2 -m1 --mirrorlog core -n $lv1 $vg $dev1 $dev2
mimages_are_redundant_ $vg $lv1
check_and_cleanup_lvs_
#COMM "create 3-way mirror with disklog from 4 PVs"
prepare_lvs_
lvcreate -l2 -m2 -n $lv1 $vg $dev1 $dev2 $dev4 $dev3:0-1
mimages_are_redundant_ $vg $lv1
mirrorlog_is_on_ $vg/$lv1 $dev3
check_and_cleanup_lvs_
# ---
# convert
#COMM "convert from linear to 2-way mirror"
prepare_lvs_
lvcreate -l2 -n $lv1 $vg $dev1
lvconvert -m+1 $vg/$lv1 $dev2 $dev3:0-1
mimages_are_redundant_ $vg $lv1
mirrorlog_is_on_ $vg/$lv1 $dev3
check_and_cleanup_lvs_
#COMM "convert from 2-way mirror to linear"
prepare_lvs_
lvcreate -l2 -m1 -n $lv1 $vg $dev1 $dev2 $dev3:0-1
lvconvert -m-1 $vg/$lv1
mimages_are_redundant_ $vg $lv1
check_and_cleanup_lvs_
#COMM "convert from disklog to corelog"
prepare_lvs_
lvcreate -l2 -m1 -n $lv1 $vg $dev1 $dev2 $dev3:0-1
lvconvert --mirrorlog core $vg/$lv1
mimages_are_redundant_ $vg $lv1
check_and_cleanup_lvs_
#COMM "convert from corelog to disklog"
prepare_lvs_
lvcreate -l2 -m1 --mirrorlog core -n $lv1 $vg $dev1 $dev2
lvconvert --mirrorlog disk $vg/$lv1 $dev3:0-1
mimages_are_redundant_ $vg $lv1
mirrorlog_is_on_ $vg/$lv1 $dev3
check_and_cleanup_lvs_
# ---
# resize
#COMM "extend 2-way mirror"
prepare_lvs_
lvcreate -l2 -m1 -n $lv1 $vg $dev1 $dev2 $dev3:0-1
lvchange -an $vg/$lv1
lvextend -l+2 $vg/$lv1
mimages_are_redundant_ $vg $lv1
mimages_are_contiguous_ $vg $lv1
check_and_cleanup_lvs_
#COMM "reduce 2-way mirror"
prepare_lvs_
lvcreate -l4 -m1 -n $lv1 $vg $dev1 $dev2 $dev3:0-1
lvchange -an $vg/$lv1
lvreduce -l-2 $vg/$lv1
check_and_cleanup_lvs_
#COMM "extend 2-way mirror (cling if not contiguous)"
prepare_lvs_
lvcreate -l2 -m1 -n $lv1 $vg $dev1 $dev2 $dev3:0-1
lvcreate -l1 -n $lv2 $vg $dev1
lvcreate -l1 -n $lv3 $vg $dev2
lvchange -an $vg/$lv1
lvextend -l+2 $vg/$lv1
mimages_are_redundant_ $vg $lv1
mimages_are_clung_ $vg $lv1
check_and_cleanup_lvs_
# ---
# failure cases
#COMM "create 2-way mirror with disklog from 2 PVs"
prepare_lvs_
not lvcreate -l2 -m1 -n $lv1 $vg $dev1 $dev2
# "(cleanup previous test)"
check_and_cleanup_lvs_
#COMM "convert linear to 2-way mirror with 1 PV"
prepare_lvs_
lvcreate -l2 -n $lv1 $vg $dev1
not lvconvert -m+1 --mirrorlog core $vg/$lv1 $dev1
# "(cleanup previous test)"
check_and_cleanup_lvs_
# ---
# resync
# FIXME: using dm-delay to properly check whether the resync really started
#COMM "force resync 2-way active mirror"
prepare_lvs_
lvcreate -l2 -m1 -n $lv1 $vg $dev1 $dev2 $dev3:0-1
mirrorlog_is_on_ $vg/$lv1 $dev3
yes | lvchange --resync $vg/$lv1
mirrorlog_is_on_ $vg/$lv1 $dev3
check_and_cleanup_lvs_
#COMM "force resync 2-way inactive mirror"
prepare_lvs_
lvcreate -l2 -m1 -n $lv1 $vg $dev1 $dev2 $dev3:0-1
lvchange -an $vg/$lv1
mirrorlog_is_on_ $vg/$lv1 $dev3
lvchange --resync $vg/$lv1
mirrorlog_is_on_ $vg/$lv1 $dev3
check_and_cleanup_lvs_
# ---------------------------------------------------------------------