1#!/bin/bash 2# 3# Test that qemu-img info --backing-chain detects infinite loops 4# 5# Copyright (C) 2012 Red Hat, Inc. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see <http://www.gnu.org/licenses/>. 19# 20 21# creator 22owner=stefanha@redhat.com 23 24seq=`basename $0` 25echo "QA output created by $seq" 26 27status=1 # failure is the default! 28 29_cleanup() 30{ 31 _cleanup_test_img 32 rm -f "$TEST_IMG".[123].base 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 40# Any format supporting backing files 41_supported_fmt qcow2 qed 42_supported_proto file 43_supported_os Linux 44 45 46size=128M 47_make_test_img $size 48$QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG" 49 50echo 51echo "== backing file references self ==" 52_img_info --backing-chain 53 54_make_test_img $size 55mv "$TEST_IMG" "$TEST_IMG.base" 56_make_test_img -b "$TEST_IMG.base" $size 57$QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG.base" 58 59echo 60echo "== parent references self ==" 61_img_info --backing-chain 62 63_make_test_img $size 64mv "$TEST_IMG" "$TEST_IMG.1.base" 65_make_test_img -b "$TEST_IMG.1.base" $size 66mv "$TEST_IMG" "$TEST_IMG.2.base" 67_make_test_img -b "$TEST_IMG.2.base" $size 68mv "$TEST_IMG" "$TEST_IMG.3.base" 69_make_test_img -b "$TEST_IMG.3.base" $size 70$QEMU_IMG rebase -u -b "$TEST_IMG.2.base" "$TEST_IMG.1.base" 71 72echo 73echo "== ancestor references another ancestor ==" 74_img_info --backing-chain 75 76_make_test_img $size 77mv "$TEST_IMG" "$TEST_IMG.1.base" 78_make_test_img -b "$TEST_IMG.1.base" $size 79mv "$TEST_IMG" "$TEST_IMG.2.base" 80_make_test_img -b "$TEST_IMG.2.base" $size 81 82echo 83echo "== finite chain of length 3 (human) ==" 84_img_info --backing-chain 85 86echo 87echo "== finite chain of length 3 (json) ==" 88_img_info --backing-chain --output=json 89 90# success, all done 91echo "*** done" 92rm -f $seq.full 93status=0 94