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 22seq=$(basename $0) 23echo "QA output created by $seq" 24 25status=1 # failure is the default! 26 27_cleanup() 28{ 29 _cleanup_test_img 30 rm -f "$TEST_DIR/blkdebug.conf" 31} 32trap "_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 47echo 48echo '=== Simulating an I/O error during snapshot deletion ===' 49echo 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 58echo 59_img_info | grep 'Snapshot list' 60echo '(Snapshot filtered)' 61echo 62 63# Try to delete the snapshot (with an error happening when freeing the 64# then leaked clusters) 65cat > "$TEST_DIR/blkdebug.conf" <<EOF 66[inject-error] 67event = "cluster_free" 68errno = "5" 69EOF 70$QEMU_IMG snapshot -d foo "blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG" 71 72# Verify the snapshot is gone 73echo 74_img_info | grep 'Snapshot list' 75 76# Should only show leaks 77echo '--- Checking test image ---' 78_check_test_img 79 80echo 81 82# As there are only leaks, this should be able to fully repair the 83# image 84echo '--- Repairing test image ---' 85_check_test_img -r leaks 86 87 88# success, all done 89echo '*** done' 90rm -f $seq.full 91status=0 92