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} 34trap "_cleanup; exit \$status" 0 1 2 3 15 35 36# get standard environment, filters and checks 37. ./common.rc 38. ./common.filter 39. ./common.pattern 40 41# Currently only qcow2 supports rebasing 42_supported_fmt qcow2 43_supported_proto file 44_default_cache_mode writethrough 45_supported_cache_modes writethrough none 46# The refcount table tests expect a certain minimum width for refcount entries 47# (so that the refcount table actually needs to grow); that minimum is 16 bits, 48# being the default refcount entry width. 49# 32 and 64 bits do not work either, however, due to different leaked cluster 50# count on error. 51# Thus, the only remaining option is refcount_bits=16. 52_unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' 53 54echo "Errors while writing 128 kB" 55echo 56 57CLUSTER_SIZE=1024 58 59BLKDBG_TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG" 60 61for event in \ 62 l1_update \ 63 \ 64 l2_load \ 65 l2_update \ 66 l2_alloc_write \ 67 \ 68 write_aio \ 69 \ 70 refblock_load \ 71 refblock_update_part \ 72 refblock_alloc \ 73 \ 74 cluster_alloc \ 75 76do 77 78for errno in 5 28; do 79for imm in off; do 80for once in on off; do 81for vmstate in "" "-b"; do 82 83cat > "$TEST_DIR/blkdebug.conf" <<EOF 84[inject-error] 85event = "$event" 86errno = "$errno" 87immediately = "$imm" 88once ="$once" 89EOF 90 91_make_test_img 1G 92 93echo 94echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate" 95 96# We want to catch a simple L2 update, not the allocation of the first L2 table 97if [ "$event" == "l2_update" ]; then 98 $QEMU_IO -c "write $vmstate 0 512" "$TEST_IMG" > /dev/null 2>&1 99fi 100 101$QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 102 103# l2_load is not called on allocation, so issue a second write 104# Reads are another path to trigger l2_load, so do a read, too 105if [ "$event" == "l2_load" ]; then 106 $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 107 $QEMU_IO -c "read $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 108fi 109 110_check_test_img 2>&1 | grep -v "refcount=1 reference=0" 111 112done 113done 114done 115done 116done 117 118 119echo 120echo === Refcount table growth tests === 121echo 122CLUSTER_SIZE=512 123 124 125for event in \ 126 refblock_alloc_hookup \ 127 refblock_alloc_write \ 128 refblock_alloc_write_blocks \ 129 refblock_alloc_write_table \ 130 refblock_alloc_switch_table \ 131 132do 133 134# This one takes a while, so let's test only one error code (ENOSPC should 135# never be generated by qemu, so it's probably a good choice) 136for errno in 28; do 137for imm in off; do 138for once in on off; do 139for vmstate in "" "-b"; do 140 141cat > "$TEST_DIR/blkdebug.conf" <<EOF 142[inject-error] 143event = "$event" 144errno = "$errno" 145immediately = "$imm" 146once = "$once" 147EOF 148 149_make_test_img 1G 150 151echo 152echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate" 153$QEMU_IO -c "write $vmstate 0 64M" "$BLKDBG_TEST_IMG" | _filter_qemu_io 154 155_check_test_img 2>&1 | grep -v "refcount=1 reference=0" 156 157done 158done 159done 160done 161done 162 163echo 164echo === L1 growth tests === 165echo 166CLUSTER_SIZE=1024 167 168 169for event in \ 170 l1_grow_alloc_table \ 171 l1_grow_write_table \ 172 l1_grow_activate_table \ 173 174do 175 176for errno in 5 28; do 177for imm in off; do 178for once in on off; do 179 180cat > "$TEST_DIR/blkdebug.conf" <<EOF 181[inject-error] 182event = "$event" 183errno = "$errno" 184immediately = "$imm" 185once = "$once" 186EOF 187 188_make_test_img 1G 189 190echo 191echo "Event: $event; errno: $errno; imm: $imm; once: $once" 192$QEMU_IO -c "write -b 0 64k" "$BLKDBG_TEST_IMG" | _filter_qemu_io 193 194_check_test_img 2>&1 | grep -v "refcount=1 reference=0" 195 196done 197done 198done 199done 200 201echo 202echo === Avoid cluster leaks after temporary failure === 203echo 204 205cat > "$TEST_DIR/blkdebug.conf" <<EOF 206[inject-error] 207event = "write_aio" 208errno = "5" 209once = "on" 210EOF 211 212# After the failed first write, do a second write so that the updated refcount 213# block is actually written back 214_make_test_img 64M 215$QEMU_IO -c "write 0 1M" -c "write 0 1M" "$BLKDBG_TEST_IMG" | _filter_qemu_io 216_check_test_img 217 218# success, all done 219echo "*** done" 220rm -f $seq.full 221status=0 222