1#!/usr/bin/env bash 2# 3# I/O errors when working with internal qcow2 snapshots, and repairing 4# the result 5# 6# Copyright (C) 2018 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 21seq=$(basename $0) 22echo "QA output created by $seq" 23 24status=1 # failure is the default! 25 26_cleanup() 27{ 28 _cleanup_test_img 29 rm -f "$TEST_DIR/blkdebug.conf" 30} 31trap "_cleanup; exit \$status" 0 1 2 3 15 32 33# get standard environment, filters and checks 34. ./common.rc 35. ./common.filter 36 37# This test is specific to qcow2 38_supported_fmt qcow2 39_supported_proto file 40 41# This test needs clusters with at least a refcount of 2 so that 42# OFLAG_COPIED is not set. refcount_bits=1 is therefore unsupported. 43_unsupported_imgopts 'refcount_bits=1[^0-9]' 44 45echo 46echo '=== Simulating an I/O error during snapshot deletion ===' 47echo 48 49_make_test_img 64M 50$QEMU_IO -c 'write 0 64k' "$TEST_IMG" | _filter_qemu_io 51 52# Create the snapshot 53$QEMU_IMG snapshot -c foo "$TEST_IMG" 54 55# Verify the snapshot is there 56echo 57_img_info | grep 'Snapshot list' 58echo '(Snapshot filtered)' 59echo 60 61# Try to delete the snapshot (with an error happening when freeing the 62# then leaked clusters) 63cat > "$TEST_DIR/blkdebug.conf" <<EOF 64[inject-error] 65event = "cluster_free" 66errno = "5" 67EOF 68$QEMU_IMG snapshot -d foo "blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG" 69 70# Verify the snapshot is gone 71echo 72_img_info | grep 'Snapshot list' 73 74# Should only show leaks 75echo '--- Checking test image ---' 76_check_test_img 77 78echo 79 80# As there are only leaks, this should be able to fully repair the 81# image 82echo '--- Repairing test image ---' 83_check_test_img -r leaks 84 85 86# success, all done 87echo '*** done' 88rm -f $seq.full 89status=0 90