4 # qcow2 error path testing
6 # Copyright (C) 2010 Red Hat, Inc.
8 # This program is free software; you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation; either version 2 of the License, or
11 # (at your option) any later version.
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
18 # You should have received a copy of the GNU General Public License
19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
23 owner=kwolf@redhat.com
26 echo "QA output created by $seq"
28 status=1 # failure is the default!
33 rm "$TEST_DIR/blkdebug.conf"
34 rm -f "$TEST_IMG.data_file"
36 trap "_cleanup; exit \$status" 0 1 2 3 15
38 # get standard environment, filters and checks
43 # Currently only qcow2 supports rebasing
45 _supported_proto file fuse
46 _default_cache_mode writethrough
47 _supported_cache_modes writethrough none
48 # The refcount table tests expect a certain minimum width for refcount entries
49 # (so that the refcount table actually needs to grow); that minimum is 16 bits,
50 # being the default refcount entry width.
51 # 32 and 64 bits do not work either, however, due to different leaked cluster
53 # Thus, the only remaining option is refcount_bits=16.
55 # As for data_file, none of the refcount tests can work for it.
56 _unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' \
59 echo "Errors while writing 128 kB"
64 BLKDBG_TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG"
76 refblock_update_part \
85 for once in on off; do
86 for vmstate in "" "-b"; do
88 cat > "$TEST_DIR/blkdebug.conf" <<EOF
99 echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
101 # We want to catch a simple L2 update, not the allocation of the first L2 table
102 if [ "$event" == "l2_update" ]; then
103 $QEMU_IO -c "write $vmstate 0 512" "$TEST_IMG" > /dev/null 2>&1
106 $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
108 # l2_load is not called on allocation, so issue a second write
109 # Reads are another path to trigger l2_load, so do a read, too
110 if [ "$event" == "l2_load" ]; then
111 $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
112 $QEMU_IO -c "read $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
115 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
125 echo === Refcount table growth tests ===
131 refblock_alloc_hookup \
132 refblock_alloc_write \
133 refblock_alloc_write_blocks \
134 refblock_alloc_write_table \
135 refblock_alloc_switch_table \
139 # This one takes a while, so let's test only one error code (ENOSPC should
140 # never be generated by qemu, so it's probably a good choice)
143 for once in on off; do
144 for vmstate in "" "-b"; do
146 cat > "$TEST_DIR/blkdebug.conf" <<EOF
157 echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
158 $QEMU_IO -c "write $vmstate 0 64M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
160 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
169 echo === L1 growth tests ===
175 l1_grow_alloc_table \
176 l1_grow_write_table \
177 l1_grow_activate_table \
181 for errno in 5 28; do
183 for once in on off; do
185 cat > "$TEST_DIR/blkdebug.conf" <<EOF
196 echo "Event: $event; errno: $errno; imm: $imm; once: $once"
197 $QEMU_IO -c "write -b 0 64k" "$BLKDBG_TEST_IMG" | _filter_qemu_io
199 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
207 echo === Avoid cluster leaks after temporary failure ===
210 cat > "$TEST_DIR/blkdebug.conf" <<EOF
217 # After the failed first write, do a second write so that the updated refcount
218 # block is actually written back
220 $QEMU_IO -c "write 0 1M" -c "write 0 1M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
224 echo === Avoid freeing preallocated zero clusters on failure ===
227 cat > "$TEST_DIR/blkdebug.conf" <<EOF
234 _make_test_img $CLUSTER_SIZE
235 # Create a preallocated zero cluster
236 $QEMU_IO -c "write 0 $CLUSTER_SIZE" -c "write -z 0 $CLUSTER_SIZE" "$TEST_IMG" \
238 # Try to overwrite it (prompting an I/O error from blkdebug), thus
239 # triggering the alloc abort code
240 $QEMU_IO -c "write 0 $CLUSTER_SIZE" "$BLKDBG_TEST_IMG" | _filter_qemu_io