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Date: Thu, 17 Jan 2008 18:29:00 -0000
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From: wysochanski@sourceware.org
To: lvm-devel@redhat.com, lvm2-cvs@sourceware.org
Subject: LVM2/test t-mirror-vgreduce-removemissing.sh
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X-SW-Source: 2008-01/txt/msg00056.txt.bz2

CVSROOT:	/cvs/lvm2
Module name:	LVM2
Changes by:	wysochanski@sourceware.org	2008-01-17 18:29:36

Added files:
	test           : t-mirror-vgreduce-removemissing.sh 

Log message:
	Add a test case for 'vgreduce --removemissing' on stacked mirror

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/test/t-mirror-vgreduce-removemissing.sh.diff?cvsroot=lvm2&r1=NONE&r2=1.1

/cvs/lvm2/LVM2/test/t-mirror-vgreduce-removemissing.sh,v  -->  standard output
revision 1.1
--- LVM2/test/t-mirror-vgreduce-removemissing.sh
+++ -	2008-01-17 18:29:36.558129000 +0000
@@ -0,0 +1,516 @@
+#!/bin/sh
+# Copyright (C) 2007 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 'vgreduce --removemissing' works on mirrored LV"
+privileges_required_=1
+
+. ./test-lib.sh
+
+dmsetup_has_dm_devdir_support_ ||
+{
+  say "Your version of dmsetup lacks support for changing DM_DEVDIR."
+  say "Skipping this test"
+  exit 0
+}
+
+cleanup_()
+{
+  test -n "$vg" && {
+    lvremove -ff $vg
+    vgremove $vg
+  } > /dev/null
+  test -n "$pvs" && {
+    pvremove $pvs > /dev/null
+    for d in $pvs; do
+      dmsetup remove $(basename $d)
+    done
+  }
+  losetup -d $lodev
+  rm -f $lofile
+}
+
+# ---------------------------------------------------------------------
+# config
+
+nr_pvs=5
+pvsize=$((80 * 1024 * 2))
+
+vg=mirror-vgreduce-removemissing-vg-$$
+lv1=lv1
+lv2=lv2
+lv3=lv3
+
+# ---------------------------------------------------------------------
+# Utilities
+
+pv_()
+{
+  echo "$G_dev_/mapper/pv$1"
+}
+
+fail_pv_()
+{
+  local map
+  local p
+  for p in $*; do
+    map=$(basename $p)
+    echo "Fail $map"
+    [ -e map_$map ] && return
+    dmsetup table "$map" > "map_$map"
+    echo "0 $pvsize error" | dmsetup load "$map"
+    dmsetup resume "$map"
+  done
+}
+
+recover_pv_()
+{
+  local map
+  local p
+
+  for p in $*; do
+    map=$(basename $p)
+    echo "Recover $map"
+    [ ! -e "map_$map" ] && return
+    cat "map_$map" | dmsetup load "$map"
+    dmsetup resume "$map"
+    rm "map_$map"
+  done
+}
+
+lv_is_on_ ()
+{
+  local lv=$vg/$1
+  shift
+  local pvs=$*
+
+  echo "Check if $lv is exactly on PVs $pvs"
+  rm -f out1 out2
+  echo $pvs | sed 's/ /\n/g' | sort | uniq > out1
+
+  lvs -a -odevices --noheadings $lv | \
+    sed 's/([^)]*)//g; s/[ ,]/\n/g' | sort | uniq > out2
+
+  diff --ignore-blank-lines out1 out2
+}
+
+mimages_are_on_ ()
+{
+  local lv=$1
+  shift
+  local pvs=$*
+  local mimages
+  local i
+
+  echo "Check if mirror images of $lv are on PVs $pvs"
+  rm -f out1 out2
+  echo $pvs | sed 's/ /\n/g' | sort | uniq > out1
+
+  mimages=$(lvs --noheadings -a -o lv_name $vg | grep "${lv}_mimage_" | \
+             sed 's/\[//g; s/\]//g')
+  for i in $mimages; do
+    echo "Checking $vg/$i"
+    lvs -a -odevices --noheadings $vg/$i | \
+      sed 's/([^)]*)//g; s/ //g; s/,/ /g' | sort | uniq >> out2
+  done
+
+  diff --ignore-blank-lines out1 out2
+}
+
+mirrorlog_is_on_()
+{
+  local lv="$1"_mlog
+  shift
+  lv_is_on_ $lv $*
+}
+
+lv_is_linear_()
+{
+  echo "Check if $1 is linear LV (i.e. not a mirror)"
+  lvs -o stripes,attr --noheadings $vg/$1 | sed 's/ //g' | grep -q '^1-'
+}
+
+rest_pvs_()
+{
+  local index=$1
+  local num=$2
+  local rem=""
+  local n
+
+  for n in $(seq 1 $(($index - 1))) $(seq $((index + 1)) $num); do
+    rem="$rem $(pv_ $n)"
+  done
+
+  echo "$rem"
+}
+
+# ---------------------------------------------------------------------
+# Initialize PVs and VGs
+
+test_expect_success \
+  'set up temp file and loopback device' \
+  'lofile=$(pwd)/lofile && lodev=$(loop_setup_ "$lofile")'
+
+offset=1
+pvs=
+for n in $(seq 1 $nr_pvs); do
+  test_expect_success \
+      "create pv$n" \
+      'echo "0 $pvsize linear $lodev $offset" > in &&
+       dmsetup create pv$n < in'
+  offset=$(($offset + $pvsize))
+done
+
+for n in $(seq 1 $nr_pvs); do
+  pvs="$pvs $(pv_ $n)"
+done
+
+test_expect_success \
+  "Run this: pvcreate $pvs" \
+  'pvcreate $pvs'
+
+test_expect_success \
+  'set up a VG' \
+  'vgcreate $vg $pvs'
+
+# ---------------------------------------------------------------------
+# 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
+}
+
+recover_vg_()
+{
+  recover_pv_ $* &&
+  pvcreate -ff $* &&
+  vgextend $vg $* &&
+  check_and_cleanup_lvs_
+}
+
+test_expect_success "check environment setup/cleanup" \
+  'prepare_lvs_ &&
+   check_and_cleanup_lvs_'
+
+# ---------------------------------------------------------------------
+# one of mirror images has failed
+
+test_expect_success "basic: fail the 2nd mirror image of 2-way mirrored LV" \
+  'prepare_lvs_ &&
+   lvcreate -l2 -m1 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 3):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 3) &&
+   fail_pv_ $(pv_ 2) &&
+   vgreduce --removemissing $vg &&
+   lv_is_linear_ $lv1 &&
+   lv_is_on_ $lv1 $(pv_ 1)'
+test_expect_success "cleanup" \
+  'recover_vg_ $(pv_ 2)'
+
+# ---------------------------------------------------------------------
+# LV has 3 images in flat,
+# 1 out of 3 images fails
+
+# test_3way_mirror_fail_1_ <PV# to fail>
+test_3way_mirror_fail_1_()
+{
+   local index=$1
+
+   lvcreate -l2 -m2 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 3) $(pv_ 4):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) $(pv_ 3) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 4) &&
+   fail_pv_ $(pv_ $index) &&
+   vgreduce --removemissing $vg &&
+   lvs -a -o+devices $vg &&
+   mimages_are_on_ $lv1 $(rest_pvs_ $index 3) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 4)
+}
+
+for n in $(seq 1 3); do
+  test_expect_success "fail mirror image $(($n - 1)) of 3-way mirrored LV" \
+    "prepare_lvs_ &&
+     test_3way_mirror_fail_1_ $n"
+  test_expect_success "cleanup" \
+    "recover_vg_ $(pv_ $n)"
+done
+
+# ---------------------------------------------------------------------
+# LV has 3 images in flat,
+# 2 out of 3 images fail
+
+# test_3way_mirror_fail_2_ <PV# NOT to fail>
+test_3way_mirror_fail_2_()
+{
+   local index=$1
+
+   lvcreate -l2 -m2 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 3) $(pv_ 4):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) $(pv_ 3) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 4) &&
+   fail_pv_ $(rest_pvs_ $index 3) &&
+   vgreduce --removemissing $vg &&
+   lvs -a -o+devices $vg &&
+   lv_is_linear_ $lv1 &&
+   lv_is_on_ $lv1 $(pv_ $index)
+}
+
+for n in $(seq 1 3); do
+  test_expect_success "fail mirror images other than mirror image $(($n - 1)) of 3-way mirrored LV" \
+    "prepare_lvs_ &&
+     test_3way_mirror_fail_2_ $n"
+  test_expect_success "cleanup" \
+    "recover_vg_ $(rest_pvs_ $n 3)"
+done
+
+# ---------------------------------------------------------------------
+# LV has 4 images, 1 of them is in the temporary mirror for syncing.
+# 1 out of 4 images fails
+
+# test_3way_mirror_plus_1_fail_1_ <PV# to fail>
+test_3way_mirror_plus_1_fail_1_()
+{
+   local index=$1
+
+   lvcreate -l2 -m2 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 3) $(pv_ 5):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   lvconvert -m+1 $vg/$lv1 $(pv_ 4) &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) $(pv_ 3) $(pv_ 4) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5) &&
+   fail_pv_ $(pv_ $index) &&
+   vgreduce --removemissing $vg &&
+   lvs -a -o+devices $vg &&
+   mimages_are_on_ $lv1 $(rest_pvs_ $index 4) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5)
+}
+
+for n in $(seq 1 4); do
+  test_expect_success "fail mirror image $(($n - 1)) of 4-way (1 converting) mirrored LV" \
+    "prepare_lvs_ &&
+     test_3way_mirror_plus_1_fail_1_ $n"
+  test_expect_success "cleanup" \
+    "recover_vg_ $(pv_ $n)"
+done
+
+# ---------------------------------------------------------------------
+# LV has 4 images, 1 of them is in the temporary mirror for syncing.
+# 3 out of 4 images fail
+
+# test_3way_mirror_plus_1_fail_3_ <PV# NOT to fail>
+test_3way_mirror_plus_1_fail_3_()
+{
+   local index=$1
+
+   lvcreate -l2 -m2 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 3) $(pv_ 5):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   lvconvert -m+1 $vg/$lv1 $(pv_ 4) &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) $(pv_ 3) $(pv_ 4) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5) &&
+   fail_pv_ $(rest_pvs_ $index 4) &&
+   vgreduce --removemissing $vg &&
+   lvs -a -o+devices $vg &&
+   (mimages_are_on_ $lv1 $(pv_ $index) || lv_is_on_ $lv1 $(pv_ $index)) &&
+   ! mirrorlog_is_on_ $lv1 $(pv_ 5)
+}
+
+for n in $(seq 1 4); do
+  test_expect_success "fail mirror images other than mirror image $(($n - 1)) of 4-way (1 converting) mirrored LV" \
+    "prepare_lvs_ &&
+     test_3way_mirror_plus_1_fail_3_ $n"
+  test_expect_success "cleanup" \
+    "recover_vg_ $(rest_pvs_ $n 4)"
+done
+
+# ---------------------------------------------------------------------
+# LV has 4 images, 2 of them are in the temporary mirror for syncing.
+# 1 out of 4 images fail
+
+# test_2way_mirror_plus_2_fail_1_ <PV# to fail>
+test_2way_mirror_plus_2_fail_1_()
+{
+   local index=$1
+
+   lvcreate -l2 -m1 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 5):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   lvconvert -m+2 $vg/$lv1 $(pv_ 3) $(pv_ 4) &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) $(pv_ 3) $(pv_ 4) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5) &&
+   fail_pv_ $(pv_ $index) &&
+   vgreduce --removemissing $vg &&
+   lvs -a -o+devices $vg &&
+   mimages_are_on_ $lv1 $(rest_pvs_ $index 4) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5)
+}
+
+for n in $(seq 1 4); do
+  test_expect_success "fail mirror image $(($n - 1)) of 4-way (2 converting) mirrored LV" \
+    "prepare_lvs_ &&
+     test_2way_mirror_plus_2_fail_1_ $n"
+  test_expect_success "cleanup" \
+    "recover_vg_ $(pv_ $n)"
+done
+
+# ---------------------------------------------------------------------
+# LV has 4 images, 2 of them are in the temporary mirror for syncing.
+# 3 out of 4 images fail
+
+# test_2way_mirror_plus_2_fail_3_ <PV# NOT to fail>
+test_2way_mirror_plus_2_fail_3_()
+{
+   local index=$1
+
+   lvcreate -l2 -m1 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 5):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   lvconvert -m+2 $vg/$lv1 $(pv_ 3) $(pv_ 4) &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) $(pv_ 3) $(pv_ 4) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5) &&
+   fail_pv_ $(rest_pvs_ $index 4) &&
+   vgreduce --removemissing $vg &&
+   lvs -a -o+devices $vg &&
+   (mimages_are_on_ $lv1 $(pv_ $index) || lv_is_on_ $lv1 $(pv_ $index)) &&
+   ! mirrorlog_is_on_ $lv1 $(pv_ 5)
+}
+
+for n in $(seq 1 4); do
+  test_expect_success "fail mirror images other than mirror image $(($n - 1)) of 4-way (2 converting) mirrored LV" \
+    "prepare_lvs_ &&
+     test_2way_mirror_plus_2_fail_3_ $n"
+  test_expect_success "cleanup" \
+    "recover_vg_ $(rest_pvs_ $n 4)"
+done
+
+# ---------------------------------------------------------------------
+# log device is gone (flat mirror and stacked mirror)
+
+test_expect_success "fail mirror log of 2-way mirrored LV" \
+  'prepare_lvs_ &&
+   lvcreate -l2 -m1 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 5):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5) &&
+   fail_pv_ $(pv_ 5) &&
+   vgreduce --removemissing $vg &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) &&
+   ! mirrorlog_is_on_ $lv1 $(pv_ 5)'
+test_expect_success "cleanup" \
+  "recover_vg_ $(pv_ 5)"
+
+test_expect_success "fail mirror log of 3-way (1 converting) mirrored LV" \
+  'prepare_lvs_ &&
+   lvcreate -l2 -m1 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 5):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   lvconvert -m+1 $vg/$lv1 $(pv_ 3) &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) $(pv_ 3) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5) &&
+   fail_pv_ $(pv_ 5) &&
+   vgreduce --removemissing $vg &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) $(pv_ 3) &&
+   ! mirrorlog_is_on_ $lv1 $(pv_ 5)'
+test_expect_success "cleanup" \
+  "recover_vg_ $(pv_ 5)"
+
+# ---------------------------------------------------------------------
+# all images are gone (flat mirror and stacked mirror)
+
+test_expect_success "fail all mirror images of 2-way mirrored LV" \
+  'prepare_lvs_ &&
+   lvcreate -l2 -m1 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 5):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5) &&
+   fail_pv_ $(pv_ 1) $(pv_ 2) &&
+   vgreduce --removemissing $vg &&
+   ! lvs $vg/$lv1'
+test_expect_success "cleanup" \
+  "recover_vg_ $(pv_ 1) $(pv_ 2)"
+
+test_expect_success "fail all mirror images of 3-way (1 converting) mirrored LV" \
+  'prepare_lvs_ &&
+   lvcreate -l2 -m1 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 5):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   lvconvert -m+1 $vg/$lv1 $(pv_ 3) &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) $(pv_ 3) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5) &&
+   fail_pv_ $(pv_ 1) $(pv_ 2) $(pv_ 3) &&
+   vgreduce --removemissing $vg &&
+   ! lvs $vg/$lv1'
+test_expect_success "cleanup" \
+  "recover_vg_ $(pv_ 1) $(pv_ 2) $(pv_ 3)"
+
+# ---------------------------------------------------------------------
+# Multiple LVs
+
+test_expect_success "fail a mirror image of one of mirrored LV" \
+  'prepare_lvs_ &&
+   lvcreate -l2 -m1 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 5):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   lvcreate -l2 -m1 -n $lv2 $vg $(pv_ 3) $(pv_ 4) $(pv_ 5):1-1 &&
+   lvchange -an $vg/$lv2 &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) &&
+   mimages_are_on_ $lv2 $(pv_ 3) $(pv_ 4) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5) &&
+   mirrorlog_is_on_ $lv2 $(pv_ 5) &&
+   fail_pv_ $(pv_ 2) &&
+   vgreduce --removemissing $vg &&
+   mimages_are_on_ $lv2 $(pv_ 3) $(pv_ 4) &&
+   mirrorlog_is_on_ $lv2 $(pv_ 5) &&
+   lv_is_linear_ $lv1 &&
+   lv_is_on_ $lv1 $(pv_ 1)'
+test_expect_success "cleanup" \
+  "recover_vg_ $(pv_ 2)"
+
+test_expect_success "fail mirror images, one for each mirrored LV" \
+  'prepare_lvs_ &&
+   lvcreate -l2 -m1 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 5):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   lvcreate -l2 -m1 -n $lv2 $vg $(pv_ 3) $(pv_ 4) $(pv_ 5):1-1 &&
+   lvchange -an $vg/$lv2 &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) &&
+   mimages_are_on_ $lv2 $(pv_ 3) $(pv_ 4) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5) &&
+   mirrorlog_is_on_ $lv2 $(pv_ 5) &&
+   fail_pv_ $(pv_ 2) &&
+   fail_pv_ $(pv_ 4) &&
+   vgreduce --removemissing $vg &&
+   lv_is_linear_ $lv1 &&
+   lv_is_on_ $lv1 $(pv_ 1) &&
+   lv_is_linear_ $lv2 &&
+   lv_is_on_ $lv2 $(pv_ 3)'
+test_expect_success "cleanup" \
+  "recover_vg_ $(pv_ 2) $(pv_ 4)"
+
+# ---------------------------------------------------------------------
+# no failure
+
+test_expect_success "no failures" \
+  'prepare_lvs_ &&
+   lvcreate -l2 -m1 -n $lv1 $vg $(pv_ 1) $(pv_ 2) $(pv_ 5):0-1 &&
+   lvchange -an $vg/$lv1 &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5) &&
+   vgreduce --removemissing $vg &&
+   mimages_are_on_ $lv1 $(pv_ 1) $(pv_ 2) &&
+   mirrorlog_is_on_ $lv1 $(pv_ 5)'
+test_expect_success "cleanup" \
+  'check_and_cleanup_lvs_'
+
+# ---------------------------------------------------------------------
+
+test_done