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 27here=`pwd` 28tmp=/tmp/$$ 29status=1 # failure is the default! 30 31_cleanup() 32{ 33 _cleanup_test_img 34 rm -f "$TEST_IMG".[123].base 35} 36trap "_cleanup; exit \$status" 0 1 2 3 15 37 38# get standard environment, filters and checks 39. ./common.rc 40. ./common.filter 41 42# Any format supporting backing files 43_supported_fmt qcow2 qed 44_supported_proto file 45_supported_os Linux 46 47 48size=128M 49_make_test_img $size 50$QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG" 51 52echo 53echo "== backing file references self ==" 54_img_info --backing-chain 55 56_make_test_img $size 57mv "$TEST_IMG" "$TEST_IMG.base" 58_make_test_img -b "$TEST_IMG.base" $size 59$QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG.base" 60 61echo 62echo "== parent references self ==" 63_img_info --backing-chain 64 65_make_test_img $size 66mv "$TEST_IMG" "$TEST_IMG.1.base" 67_make_test_img -b "$TEST_IMG.1.base" $size 68mv "$TEST_IMG" "$TEST_IMG.2.base" 69_make_test_img -b "$TEST_IMG.2.base" $size 70mv "$TEST_IMG" "$TEST_IMG.3.base" 71_make_test_img -b "$TEST_IMG.3.base" $size 72$QEMU_IMG rebase -u -b "$TEST_IMG.2.base" "$TEST_IMG.1.base" 73 74echo 75echo "== ancestor references another ancestor ==" 76_img_info --backing-chain 77 78_make_test_img $size 79mv "$TEST_IMG" "$TEST_IMG.1.base" 80_make_test_img -b "$TEST_IMG.1.base" $size 81mv "$TEST_IMG" "$TEST_IMG.2.base" 82_make_test_img -b "$TEST_IMG.2.base" $size 83 84echo 85echo "== finite chain of length 3 (human) ==" 86_img_info --backing-chain 87 88echo 89echo "== finite chain of length 3 (json) ==" 90_img_info --backing-chain --output=json 91 92# success, all done 93echo "*** done" 94rm -f $seq.full 95status=0 96