1#!/usr/bin/env bash 2# 3# qcow2 v3-exclusive error path testing 4# (026 tests paths common to v2 and v3) 5# 6# Copyright (C) 2020 Red Hat, Inc. 7# 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. 12# 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. 17# 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/>. 20# 21 22seq=$(basename $0) 23echo "QA output created by $seq" 24 25status=1 # failure is the default! 26 27_cleanup() 28{ 29 _cleanup_test_img 30 rm "$TEST_DIR/blkdebug.conf" 31 rm -f "$TEST_IMG.data_file" 32} 33trap "_cleanup; exit \$status" 0 1 2 3 15 34 35# get standard environment, filters and checks 36. ./common.rc 37. ./common.filter 38. ./common.pattern 39 40_supported_fmt qcow2 41_supported_proto file 42# This is a v3-exclusive test; 43# As for data_file, error paths often very much depend on whether 44# there is an external data file or not; so we create one exactly when 45# we want to test it 46_unsupported_imgopts 'compat=0.10' data_file 47 48echo 49echo === Avoid freeing external data clusters on failure === 50echo 51 52cat > "$TEST_DIR/blkdebug.conf" <<EOF 53[inject-error] 54event = "write_aio" 55errno = "5" 56once = "on" 57EOF 58 59# Test what happens when there is an error when writing to an external 60# data file instead of when writing to a preallocated zero cluster 61_make_test_img -o "data_file=$TEST_IMG.data_file" 64k 62 63# Put blkdebug above the data-file, and a raw node on top of that so 64# that blkdebug will see a write_aio event and emit an error. This 65# will then trigger the alloc abort code, which we want to test here. 66$QEMU_IO -c "write 0 64k" \ 67 "json:{ 68 'driver': 'qcow2', 69 'file': { 'driver': 'file', 'filename': '$TEST_IMG' }, 70 'data-file': { 71 'driver': 'raw', 72 'file': { 73 'driver': 'blkdebug', 74 'config': '$TEST_DIR/blkdebug.conf', 75 'image': { 76 'driver': 'file', 77 'filename': '$TEST_IMG.data_file' 78 } 79 } 80 } 81 }" \ 82 | _filter_qemu_io 83 84_check_test_img 85 86# success, all done 87echo "*** done" 88rm -f $seq.full 89status=0 90