1#!/usr/bin/env bash 2# 3# qcow2 error path testing 4# 5# Copyright (C) 2010 Red Hat, Inc. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see <http://www.gnu.org/licenses/>. 19# 20 21# creator 22owner=kwolf@redhat.com 23 24seq=`basename $0` 25echo "QA output created by $seq" 26 27status=1 # failure is the default! 28 29_cleanup() 30{ 31 _cleanup_test_img 32 rm "$TEST_DIR/blkdebug.conf" 33 rm -f "$TEST_IMG.data_file" 34} 35trap "_cleanup; exit \$status" 0 1 2 3 15 36 37# get standard environment, filters and checks 38. ./common.rc 39. ./common.filter 40. ./common.pattern 41 42# Currently only qcow2 supports rebasing 43_supported_fmt qcow2 44_supported_proto file 45_default_cache_mode writethrough 46_supported_cache_modes writethrough none 47# The refcount table tests expect a certain minimum width for refcount entries 48# (so that the refcount table actually needs to grow); that minimum is 16 bits, 49# being the default refcount entry width. 50# 32 and 64 bits do not work either, however, due to different leaked cluster 51# count on error. 52# Thus, the only remaining option is refcount_bits=16. 53_unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' 54 55echo "Errors while writing 128 kB" 56echo 57 58CLUSTER_SIZE=1024 59 60BLKDBG_TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG" 61 62for event in \ 63 l1_update \ 64 \ 65 l2_load \ 66 l2_update \ 67 l2_alloc_write \ 68 \ 69 write_aio \ 70 \ 71 refblock_load \ 72 refblock_update_part \ 73 refblock_alloc \ 74 \ 75 cluster_alloc \ 76 77do 78 79for errno in 5 28; do 80for imm in off; do 81for once in on off; do 82for vmstate in "" "-b"; do 83 84cat > "$TEST_DIR/blkdebug.conf" <<EOF 85[inject-error] 86event = "$event" 87errno = "$errno" 88immediately = "$imm" 89once ="$once" 90EOF 91 92_make_test_img 1G 93 94echo 95echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate" 96 97# We want to catch a simple L2 update, not the allocation of the first L2 table 98if [ "$event" == "l2_update" ]; then 99 $QEMU_IO -c "write $vmstate 0 512" "$TEST_IMG" > /dev/null 2>&1 100fi 101 102$QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 103 104# l2_load is not called on allocation, so issue a second write 105# Reads are another path to trigger l2_load, so do a read, too 106if [ "$event" == "l2_load" ]; then 107 $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 108 $QEMU_IO -c "read $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 109fi 110 111_check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0" 112 113done 114done 115done 116done 117done 118 119 120echo 121echo === Refcount table growth tests === 122echo 123CLUSTER_SIZE=512 124 125 126for event in \ 127 refblock_alloc_hookup \ 128 refblock_alloc_write \ 129 refblock_alloc_write_blocks \ 130 refblock_alloc_write_table \ 131 refblock_alloc_switch_table \ 132 133do 134 135# This one takes a while, so let's test only one error code (ENOSPC should 136# never be generated by qemu, so it's probably a good choice) 137for errno in 28; do 138for imm in off; do 139for once in on off; do 140for vmstate in "" "-b"; do 141 142cat > "$TEST_DIR/blkdebug.conf" <<EOF 143[inject-error] 144event = "$event" 145errno = "$errno" 146immediately = "$imm" 147once = "$once" 148EOF 149 150_make_test_img 1G 151 152echo 153echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate" 154$QEMU_IO -c "write $vmstate 0 64M" "$BLKDBG_TEST_IMG" | _filter_qemu_io 155 156_check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0" 157 158done 159done 160done 161done 162done 163 164echo 165echo === L1 growth tests === 166echo 167CLUSTER_SIZE=1024 168 169 170for event in \ 171 l1_grow_alloc_table \ 172 l1_grow_write_table \ 173 l1_grow_activate_table \ 174 175do 176 177for errno in 5 28; do 178for imm in off; do 179for once in on off; do 180 181cat > "$TEST_DIR/blkdebug.conf" <<EOF 182[inject-error] 183event = "$event" 184errno = "$errno" 185immediately = "$imm" 186once = "$once" 187EOF 188 189_make_test_img 1G 190 191echo 192echo "Event: $event; errno: $errno; imm: $imm; once: $once" 193$QEMU_IO -c "write -b 0 64k" "$BLKDBG_TEST_IMG" | _filter_qemu_io 194 195_check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0" 196 197done 198done 199done 200done 201 202echo 203echo === Avoid cluster leaks after temporary failure === 204echo 205 206cat > "$TEST_DIR/blkdebug.conf" <<EOF 207[inject-error] 208event = "write_aio" 209errno = "5" 210once = "on" 211EOF 212 213# After the failed first write, do a second write so that the updated refcount 214# block is actually written back 215_make_test_img 64M 216$QEMU_IO -c "write 0 1M" -c "write 0 1M" "$BLKDBG_TEST_IMG" | _filter_qemu_io 217_check_test_img 218 219echo 220echo === Avoid freeing preallocated zero clusters on failure === 221echo 222 223cat > "$TEST_DIR/blkdebug.conf" <<EOF 224[inject-error] 225event = "write_aio" 226errno = "5" 227once = "on" 228EOF 229 230_make_test_img $CLUSTER_SIZE 231# Create a preallocated zero cluster 232$QEMU_IO -c "write 0 $CLUSTER_SIZE" -c "write -z 0 $CLUSTER_SIZE" "$TEST_IMG" \ 233 | _filter_qemu_io 234# Try to overwrite it (prompting an I/O error from blkdebug), thus 235# triggering the alloc abort code 236$QEMU_IO -c "write 0 $CLUSTER_SIZE" "$BLKDBG_TEST_IMG" | _filter_qemu_io 237 238_check_test_img 239 240# success, all done 241echo "*** done" 242rm -f $seq.full 243status=0 244