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1#!/usr/bin/env bash 2# group: rw quick 3# 4# qcow2 v3-exclusive error path testing 5# (026 tests paths common to v2 and v3) 6# 7# Copyright (C) 2020 Red Hat, Inc. 8# 9# This program is free software; you can redistribute it and/or modify 10# it under the terms of the GNU General Public License as published by 11# the Free Software Foundation; either version 2 of the License, or 12# (at your option) any later version. 13# 14# This program is distributed in the hope that it will be useful, 15# but WITHOUT ANY WARRANTY; without even the implied warranty of 16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17# GNU General Public License for more details. 18# 19# You should have received a copy of the GNU General Public License 20# along with this program. If not, see <http://www.gnu.org/licenses/>. 21# 22 23seq=$(basename $0) 24echo "QA output created by $seq" 25 26status=1 # failure is the default! 27 28_cleanup() 29{ 30 _cleanup_test_img 31 rm "$TEST_DIR/blkdebug.conf" 32 rm -f "$TEST_IMG.data_file" 33} 34trap "_cleanup; exit \$status" 0 1 2 3 15 35 36# get standard environment, filters and checks 37. ./common.rc 38. ./common.filter 39. ./common.pattern 40 41_supported_fmt qcow2 42_supported_proto file fuse 43# This is a v3-exclusive test; 44# As for data_file, error paths often very much depend on whether 45# there is an external data file or not; so we create one exactly when 46# we want to test it 47_unsupported_imgopts 'compat=0.10' data_file 48 49echo 50echo === Avoid freeing external data clusters on failure === 51echo 52 53cat > "$TEST_DIR/blkdebug.conf" <<EOF 54[inject-error] 55event = "write_aio" 56errno = "5" 57once = "on" 58EOF 59 60# Test what happens when there is an error when writing to an external 61# data file instead of when writing to a preallocated zero cluster 62_make_test_img -o "data_file=$TEST_IMG.data_file" 64k 63 64# Put blkdebug above the data-file, and a raw node on top of that so 65# that blkdebug will see a write_aio event and emit an error. This 66# will then trigger the alloc abort code, which we want to test here. 67$QEMU_IO -c "write 0 64k" \ 68 "json:{ 69 'driver': 'qcow2', 70 'file': { 'driver': 'file', 'filename': '$TEST_IMG' }, 71 'data-file': { 72 'driver': 'raw', 73 'file': { 74 'driver': 'blkdebug', 75 'config': '$TEST_DIR/blkdebug.conf', 76 'image': { 77 'driver': 'file', 78 'filename': '$TEST_IMG.data_file' 79 } 80 } 81 } 82 }" \ 83 | _filter_qemu_io 84 85_check_test_img 86 87# success, all done 88echo "*** done" 89rm -f $seq.full 90status=0