043 (2653B)
1 #!/usr/bin/env bash 2 # group: rw auto backing 3 # 4 # Test that qemu-img info --backing-chain detects infinite loops 5 # 6 # Copyright (C) 2012 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 # 21 22 # creator 23 owner=stefanha@redhat.com 24 25 seq=`basename $0` 26 echo "QA output created by $seq" 27 28 status=1 # failure is the default! 29 30 _cleanup() 31 { 32 _cleanup_test_img 33 for img in "$TEST_IMG".[123].base; do 34 _rm_test_img "$img" 35 done 36 } 37 trap "_cleanup; exit \$status" 0 1 2 3 15 38 39 # get standard environment, filters and checks 40 . ./common.rc 41 . ./common.filter 42 43 # Any format supporting backing files 44 _supported_fmt qcow2 qed 45 _supported_proto file 46 47 48 size=128M 49 _make_test_img $size 50 $QEMU_IMG rebase -u -b "$TEST_IMG" -F $IMGFMT "$TEST_IMG" 51 52 echo 53 echo "== backing file references self ==" 54 _img_info --backing-chain 55 56 _make_test_img $size 57 mv "$TEST_IMG" "$TEST_IMG.base" 58 _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $size 59 $QEMU_IMG rebase -u -b "$TEST_IMG" -F $IMGFMT "$TEST_IMG.base" 60 61 echo 62 echo "== parent references self ==" 63 _img_info --backing-chain 64 65 _make_test_img $size 66 mv "$TEST_IMG" "$TEST_IMG.1.base" 67 _make_test_img -b "$TEST_IMG.1.base" -F $IMGFMT $size 68 mv "$TEST_IMG" "$TEST_IMG.2.base" 69 _make_test_img -b "$TEST_IMG.2.base" -F $IMGFMT $size 70 mv "$TEST_IMG" "$TEST_IMG.3.base" 71 _make_test_img -b "$TEST_IMG.3.base" -F $IMGFMT $size 72 $QEMU_IMG rebase -u -b "$TEST_IMG.2.base" -F $IMGFMT "$TEST_IMG.1.base" 73 74 echo 75 echo "== ancestor references another ancestor ==" 76 _img_info --backing-chain 77 78 _make_test_img $size 79 mv "$TEST_IMG" "$TEST_IMG.1.base" 80 _make_test_img -b "$TEST_IMG.1.base" -F $IMGFMT $size 81 mv "$TEST_IMG" "$TEST_IMG.2.base" 82 _make_test_img -b "$TEST_IMG.2.base" -F $IMGFMT $size 83 84 echo 85 echo "== finite chain of length 3 (human) ==" 86 # Exclude backing format, since qed differs from qcow2 on what gets stored 87 _img_info --backing-chain | grep -v '^backing file format:' 88 89 echo 90 echo "== finite chain of length 3 (json) ==" 91 _img_info --backing-chain --output=json | grep -v 'backing-filename-format' 92 93 # success, all done 94 echo "*** done" 95 rm -f $seq.full 96 status=0