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