#!/bin/bash # # Test that qemu-img info --backing-chain detects infinite loops # # Copyright (C) 2012 Red Hat, Inc. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. # # creator owner=stefanha@redhat.com seq=`basename $0` echo "QA output created by $seq" here=`pwd` tmp=/tmp/$$ status=1 # failure is the default! _cleanup() { _cleanup_test_img rm -f "$TEST_IMG".[123].base } trap "_cleanup; exit \$status" 0 1 2 3 15 # get standard environment, filters and checks . ./common.rc . ./common.filter # Any format supporting backing files _supported_fmt qcow2 qed _supported_proto file _supported_os Linux size=128M _make_test_img $size $QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG" echo echo "== backing file references self ==" _img_info --backing-chain _make_test_img $size mv "$TEST_IMG" "$TEST_IMG.base" _make_test_img -b "$TEST_IMG.base" $size $QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG.base" echo echo "== parent references self ==" _img_info --backing-chain _make_test_img $size mv "$TEST_IMG" "$TEST_IMG.1.base" _make_test_img -b "$TEST_IMG.1.base" $size mv "$TEST_IMG" "$TEST_IMG.2.base" _make_test_img -b "$TEST_IMG.2.base" $size mv "$TEST_IMG" "$TEST_IMG.3.base" _make_test_img -b "$TEST_IMG.3.base" $size $QEMU_IMG rebase -u -b "$TEST_IMG.2.base" "$TEST_IMG.1.base" echo echo "== ancestor references another ancestor ==" _img_info --backing-chain _make_test_img $size mv "$TEST_IMG" "$TEST_IMG.1.base" _make_test_img -b "$TEST_IMG.1.base" $size mv "$TEST_IMG" "$TEST_IMG.2.base" _make_test_img -b "$TEST_IMG.2.base" $size echo echo "== finite chain of length 3 (human) ==" _img_info --backing-chain echo echo "== finite chain of length 3 (json) ==" _img_info --backing-chain --output=json # success, all done echo "*** done" rm -f $seq.full status=0