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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 23 seq=$(basename $0) 24 echo "QA output created by $seq" 25 26 status=1 # failure is the default! 27 28 _cleanup() 29 { 30 _cleanup_test_img 31 rm "$TEST_DIR/blkdebug.conf" 32 rm -f "$TEST_IMG.data_file" 33 } 34 trap "_cleanup; exit \$status" 0 1 2 3 15 35 36 # get standard environment, filters and checks 37 . ./common.rc 38 . ./common.filter 39 . ./common.pattern 40 41 _supported_fmt qcow2 42 _supported_proto file fuse 43 # This is a v3-exclusive test; 44 # As for data_file, error paths often very much depend on whether 45 # there is an external data file or not; so we create one exactly when 46 # we want to test it 47 _unsupported_imgopts 'compat=0.10' data_file 48 49 echo 50 echo === Avoid freeing external data clusters on failure === 51 echo 52 53 cat > "$TEST_DIR/blkdebug.conf" <<EOF 54 [inject-error] 55 event = "write_aio" 56 errno = "5" 57 once = "on" 58 EOF 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 88 echo "*** done" 89 rm -f $seq.full 90 status=0