1#!/usr/bin/env 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 44 45size=128M 46_make_test_img $size 47$QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG" 48 49echo 50echo "== backing file references self ==" 51_img_info --backing-chain 52 53_make_test_img $size 54mv "$TEST_IMG" "$TEST_IMG.base" 55_make_test_img -b "$TEST_IMG.base" $size 56$QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG.base" 57 58echo 59echo "== parent references self ==" 60_img_info --backing-chain 61 62_make_test_img $size 63mv "$TEST_IMG" "$TEST_IMG.1.base" 64_make_test_img -b "$TEST_IMG.1.base" $size 65mv "$TEST_IMG" "$TEST_IMG.2.base" 66_make_test_img -b "$TEST_IMG.2.base" $size 67mv "$TEST_IMG" "$TEST_IMG.3.base" 68_make_test_img -b "$TEST_IMG.3.base" $size 69$QEMU_IMG rebase -u -b "$TEST_IMG.2.base" "$TEST_IMG.1.base" 70 71echo 72echo "== ancestor references another ancestor ==" 73_img_info --backing-chain 74 75_make_test_img $size 76mv "$TEST_IMG" "$TEST_IMG.1.base" 77_make_test_img -b "$TEST_IMG.1.base" $size 78mv "$TEST_IMG" "$TEST_IMG.2.base" 79_make_test_img -b "$TEST_IMG.2.base" $size 80 81echo 82echo "== finite chain of length 3 (human) ==" 83_img_info --backing-chain 84 85echo 86echo "== finite chain of length 3 (json) ==" 87_img_info --backing-chain --output=json 88 89# success, all done 90echo "*** done" 91rm -f $seq.full 92status=0 93