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1 #!/usr/bin/env bash 2 # group: rw auto quick 3 # 4 # I/O errors when working with internal qcow2 snapshots, and repairing 5 # the result 6 # 7 # Copyright (C) 2018 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 seq=$(basename $0) 23 echo "QA output created by $seq" 24 25 status=1 # failure is the default! 26 27 _cleanup() 28 { 29 _cleanup_test_img 30 rm -f "$TEST_DIR/blkdebug.conf" 31 } 32 trap "_cleanup; exit \$status" 0 1 2 3 15 33 34 # get standard environment, filters and checks 35 . ./common.rc 36 . ./common.filter 37 38 # This test is specific to qcow2 39 _supported_fmt qcow2 40 _supported_proto file fuse 41 42 # This test needs clusters with at least a refcount of 2 so that 43 # OFLAG_COPIED is not set. refcount_bits=1 is therefore unsupported. 44 # (As are external data files.) 45 _unsupported_imgopts 'refcount_bits=1[^0-9]' data_file 46 47 echo 48 echo '=== Simulating an I/O error during snapshot deletion ===' 49 echo 50 51 _make_test_img 64M 52 $QEMU_IO -c 'write 0 64k' "$TEST_IMG" | _filter_qemu_io 53 54 # Create the snapshot 55 $QEMU_IMG snapshot -c foo "$TEST_IMG" 56 57 # Verify the snapshot is there 58 echo 59 _img_info | grep 'Snapshot list' 60 echo '(Snapshot filtered)' 61 echo 62 63 # Try to delete the snapshot (with an error happening when freeing the 64 # then leaked clusters) 65 cat > "$TEST_DIR/blkdebug.conf" <<EOF 66 [inject-error] 67 event = "cluster_free" 68 errno = "5" 69 EOF 70 $QEMU_IMG snapshot -d foo "blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG" 71 72 # Verify the snapshot is gone 73 echo 74 _img_info | grep 'Snapshot list' 75 76 # Should only show leaks 77 echo '--- Checking test image ---' 78 _check_test_img 79 80 echo 81 82 # As there are only leaks, this should be able to fully repair the 83 # image 84 echo '--- Repairing test image ---' 85 _check_test_img -r leaks 86 87 88 # success, all done 89 echo '*** done' 90 rm -f $seq.full 91 status=0