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# 54# As for data_file, none of the refcount tests can work for it. 55_unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' \ 56 data_file 57 58echo "Errors while writing 128 kB" 59echo 60 61CLUSTER_SIZE=1024 62 63BLKDBG_TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG" 64 65for event in \ 66 l1_update \ 67 \ 68 l2_load \ 69 l2_update \ 70 l2_alloc_write \ 71 \ 72 write_aio \ 73 \ 74 refblock_load \ 75 refblock_update_part \ 76 refblock_alloc \ 77 \ 78 cluster_alloc \ 79 80do 81 82for errno in 5 28; do 83for imm in off; do 84for once in on off; do 85for vmstate in "" "-b"; do 86 87cat > "$TEST_DIR/blkdebug.conf" <<EOF 88[inject-error] 89event = "$event" 90errno = "$errno" 91immediately = "$imm" 92once ="$once" 93EOF 94 95_make_test_img 1G 96 97echo 98echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate" 99 100# We want to catch a simple L2 update, not the allocation of the first L2 table 101if [ "$event" == "l2_update" ]; then 102 $QEMU_IO -c "write $vmstate 0 512" "$TEST_IMG" > /dev/null 2>&1 103fi 104 105$QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 106 107# l2_load is not called on allocation, so issue a second write 108# Reads are another path to trigger l2_load, so do a read, too 109if [ "$event" == "l2_load" ]; then 110 $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 111 $QEMU_IO -c "read $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 112fi 113 114_check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0" 115 116done 117done 118done 119done 120done 121 122 123echo 124echo === Refcount table growth tests === 125echo 126CLUSTER_SIZE=512 127 128 129for event in \ 130 refblock_alloc_hookup \ 131 refblock_alloc_write \ 132 refblock_alloc_write_blocks \ 133 refblock_alloc_write_table \ 134 refblock_alloc_switch_table \ 135 136do 137 138# This one takes a while, so let's test only one error code (ENOSPC should 139# never be generated by qemu, so it's probably a good choice) 140for errno in 28; do 141for imm in off; do 142for once in on off; do 143for vmstate in "" "-b"; do 144 145cat > "$TEST_DIR/blkdebug.conf" <<EOF 146[inject-error] 147event = "$event" 148errno = "$errno" 149immediately = "$imm" 150once = "$once" 151EOF 152 153_make_test_img 1G 154 155echo 156echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate" 157$QEMU_IO -c "write $vmstate 0 64M" "$BLKDBG_TEST_IMG" | _filter_qemu_io 158 159_check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0" 160 161done 162done 163done 164done 165done 166 167echo 168echo === L1 growth tests === 169echo 170CLUSTER_SIZE=1024 171 172 173for event in \ 174 l1_grow_alloc_table \ 175 l1_grow_write_table \ 176 l1_grow_activate_table \ 177 178do 179 180for errno in 5 28; do 181for imm in off; do 182for once in on off; do 183 184cat > "$TEST_DIR/blkdebug.conf" <<EOF 185[inject-error] 186event = "$event" 187errno = "$errno" 188immediately = "$imm" 189once = "$once" 190EOF 191 192_make_test_img 1G 193 194echo 195echo "Event: $event; errno: $errno; imm: $imm; once: $once" 196$QEMU_IO -c "write -b 0 64k" "$BLKDBG_TEST_IMG" | _filter_qemu_io 197 198_check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0" 199 200done 201done 202done 203done 204 205echo 206echo === Avoid cluster leaks after temporary failure === 207echo 208 209cat > "$TEST_DIR/blkdebug.conf" <<EOF 210[inject-error] 211event = "write_aio" 212errno = "5" 213once = "on" 214EOF 215 216# After the failed first write, do a second write so that the updated refcount 217# block is actually written back 218_make_test_img 64M 219$QEMU_IO -c "write 0 1M" -c "write 0 1M" "$BLKDBG_TEST_IMG" | _filter_qemu_io 220_check_test_img 221 222echo 223echo === Avoid freeing preallocated zero clusters on failure === 224echo 225 226cat > "$TEST_DIR/blkdebug.conf" <<EOF 227[inject-error] 228event = "write_aio" 229errno = "5" 230once = "on" 231EOF 232 233_make_test_img $CLUSTER_SIZE 234# Create a preallocated zero cluster 235$QEMU_IO -c "write 0 $CLUSTER_SIZE" -c "write -z 0 $CLUSTER_SIZE" "$TEST_IMG" \ 236 | _filter_qemu_io 237# Try to overwrite it (prompting an I/O error from blkdebug), thus 238# triggering the alloc abort code 239$QEMU_IO -c "write 0 $CLUSTER_SIZE" "$BLKDBG_TEST_IMG" | _filter_qemu_io 240 241_check_test_img 242 243# success, all done 244echo "*** done" 245rm -f $seq.full 246status=0 247