81311255f2
Test what happens when writing data to an external data file, where the write requires an L2 entry to be allocated, but the data write fails. Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20200225143130.111267-4-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
278 lines
6.4 KiB
Bash
Executable File
278 lines
6.4 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
#
|
|
# qcow2 error path testing
|
|
#
|
|
# Copyright (C) 2010 Red Hat, Inc.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
|
|
# creator
|
|
owner=kwolf@redhat.com
|
|
|
|
seq=`basename $0`
|
|
echo "QA output created by $seq"
|
|
|
|
status=1 # failure is the default!
|
|
|
|
_cleanup()
|
|
{
|
|
_cleanup_test_img
|
|
rm "$TEST_DIR/blkdebug.conf"
|
|
rm -f "$TEST_IMG.data_file"
|
|
}
|
|
trap "_cleanup; exit \$status" 0 1 2 3 15
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common.rc
|
|
. ./common.filter
|
|
. ./common.pattern
|
|
|
|
# Currently only qcow2 supports rebasing
|
|
_supported_fmt qcow2
|
|
_supported_proto file
|
|
_default_cache_mode writethrough
|
|
_supported_cache_modes writethrough none
|
|
# The refcount table tests expect a certain minimum width for refcount entries
|
|
# (so that the refcount table actually needs to grow); that minimum is 16 bits,
|
|
# being the default refcount entry width.
|
|
# 32 and 64 bits do not work either, however, due to different leaked cluster
|
|
# count on error.
|
|
# Thus, the only remaining option is refcount_bits=16.
|
|
#
|
|
# As for data_file, none of the refcount tests can work for it.
|
|
_unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' \
|
|
data_file
|
|
|
|
echo "Errors while writing 128 kB"
|
|
echo
|
|
|
|
CLUSTER_SIZE=1024
|
|
|
|
BLKDBG_TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG"
|
|
|
|
for event in \
|
|
l1_update \
|
|
\
|
|
l2_load \
|
|
l2_update \
|
|
l2_alloc_write \
|
|
\
|
|
write_aio \
|
|
\
|
|
refblock_load \
|
|
refblock_update_part \
|
|
refblock_alloc \
|
|
\
|
|
cluster_alloc \
|
|
|
|
do
|
|
|
|
for errno in 5 28; do
|
|
for imm in off; do
|
|
for once in on off; do
|
|
for vmstate in "" "-b"; do
|
|
|
|
cat > "$TEST_DIR/blkdebug.conf" <<EOF
|
|
[inject-error]
|
|
event = "$event"
|
|
errno = "$errno"
|
|
immediately = "$imm"
|
|
once ="$once"
|
|
EOF
|
|
|
|
_make_test_img 1G
|
|
|
|
echo
|
|
echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
|
|
|
|
# We want to catch a simple L2 update, not the allocation of the first L2 table
|
|
if [ "$event" == "l2_update" ]; then
|
|
$QEMU_IO -c "write $vmstate 0 512" "$TEST_IMG" > /dev/null 2>&1
|
|
fi
|
|
|
|
$QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
|
|
|
|
# l2_load is not called on allocation, so issue a second write
|
|
# Reads are another path to trigger l2_load, so do a read, too
|
|
if [ "$event" == "l2_load" ]; then
|
|
$QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
|
|
$QEMU_IO -c "read $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
|
|
fi
|
|
|
|
_check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
|
|
|
|
done
|
|
done
|
|
done
|
|
done
|
|
done
|
|
|
|
|
|
echo
|
|
echo === Refcount table growth tests ===
|
|
echo
|
|
CLUSTER_SIZE=512
|
|
|
|
|
|
for event in \
|
|
refblock_alloc_hookup \
|
|
refblock_alloc_write \
|
|
refblock_alloc_write_blocks \
|
|
refblock_alloc_write_table \
|
|
refblock_alloc_switch_table \
|
|
|
|
do
|
|
|
|
# This one takes a while, so let's test only one error code (ENOSPC should
|
|
# never be generated by qemu, so it's probably a good choice)
|
|
for errno in 28; do
|
|
for imm in off; do
|
|
for once in on off; do
|
|
for vmstate in "" "-b"; do
|
|
|
|
cat > "$TEST_DIR/blkdebug.conf" <<EOF
|
|
[inject-error]
|
|
event = "$event"
|
|
errno = "$errno"
|
|
immediately = "$imm"
|
|
once = "$once"
|
|
EOF
|
|
|
|
_make_test_img 1G
|
|
|
|
echo
|
|
echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
|
|
$QEMU_IO -c "write $vmstate 0 64M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
|
|
|
|
_check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
|
|
|
|
done
|
|
done
|
|
done
|
|
done
|
|
done
|
|
|
|
echo
|
|
echo === L1 growth tests ===
|
|
echo
|
|
CLUSTER_SIZE=1024
|
|
|
|
|
|
for event in \
|
|
l1_grow_alloc_table \
|
|
l1_grow_write_table \
|
|
l1_grow_activate_table \
|
|
|
|
do
|
|
|
|
for errno in 5 28; do
|
|
for imm in off; do
|
|
for once in on off; do
|
|
|
|
cat > "$TEST_DIR/blkdebug.conf" <<EOF
|
|
[inject-error]
|
|
event = "$event"
|
|
errno = "$errno"
|
|
immediately = "$imm"
|
|
once = "$once"
|
|
EOF
|
|
|
|
_make_test_img 1G
|
|
|
|
echo
|
|
echo "Event: $event; errno: $errno; imm: $imm; once: $once"
|
|
$QEMU_IO -c "write -b 0 64k" "$BLKDBG_TEST_IMG" | _filter_qemu_io
|
|
|
|
_check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
|
|
|
|
done
|
|
done
|
|
done
|
|
done
|
|
|
|
echo
|
|
echo === Avoid cluster leaks after temporary failure ===
|
|
echo
|
|
|
|
cat > "$TEST_DIR/blkdebug.conf" <<EOF
|
|
[inject-error]
|
|
event = "write_aio"
|
|
errno = "5"
|
|
once = "on"
|
|
EOF
|
|
|
|
# After the failed first write, do a second write so that the updated refcount
|
|
# block is actually written back
|
|
_make_test_img 64M
|
|
$QEMU_IO -c "write 0 1M" -c "write 0 1M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
|
|
_check_test_img
|
|
|
|
echo
|
|
echo === Avoid freeing preallocated zero clusters on failure ===
|
|
echo
|
|
|
|
cat > "$TEST_DIR/blkdebug.conf" <<EOF
|
|
[inject-error]
|
|
event = "write_aio"
|
|
errno = "5"
|
|
once = "on"
|
|
EOF
|
|
|
|
_make_test_img $CLUSTER_SIZE
|
|
# Create a preallocated zero cluster
|
|
$QEMU_IO -c "write 0 $CLUSTER_SIZE" -c "write -z 0 $CLUSTER_SIZE" "$TEST_IMG" \
|
|
| _filter_qemu_io
|
|
# Try to overwrite it (prompting an I/O error from blkdebug), thus
|
|
# triggering the alloc abort code
|
|
$QEMU_IO -c "write 0 $CLUSTER_SIZE" "$BLKDBG_TEST_IMG" | _filter_qemu_io
|
|
|
|
_check_test_img
|
|
|
|
echo
|
|
echo === Avoid freeing external data clusters on failure ===
|
|
echo
|
|
|
|
# Similar test as the last one, except we test what happens when there
|
|
# is an error when writing to an external data file instead of when
|
|
# writing to a preallocated zero cluster
|
|
_make_test_img -o "data_file=$TEST_IMG.data_file" $CLUSTER_SIZE
|
|
|
|
# Put blkdebug above the data-file, and a raw node on top of that so
|
|
# that blkdebug will see a write_aio event and emit an error
|
|
$QEMU_IO -c "write 0 $CLUSTER_SIZE" \
|
|
"json:{
|
|
'driver': 'qcow2',
|
|
'file': { 'driver': 'file', 'filename': '$TEST_IMG' },
|
|
'data-file': {
|
|
'driver': 'raw',
|
|
'file': {
|
|
'driver': 'blkdebug',
|
|
'config': '$TEST_DIR/blkdebug.conf',
|
|
'image': {
|
|
'driver': 'file',
|
|
'filename': '$TEST_IMG.data_file'
|
|
}
|
|
}
|
|
}
|
|
}" \
|
|
| _filter_qemu_io
|
|
|
|
_check_test_img
|
|
|
|
# success, all done
|
|
echo "*** done"
|
|
rm -f $seq.full
|
|
status=0
|