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1 #!/usr/bin/env bash 2 # group: rw quick 3 # 4 # Test that temporary backing file overrides (on the command line or in 5 # blockdev-add) don't replace the original path stored in the image during 6 # header updates. 7 # 8 # Copyright (C) 2015 Red Hat, Inc. 9 # 10 # This program is free software; you can redistribute it and/or modify 11 # it under the terms of the GNU General Public License as published by 12 # the Free Software Foundation; either version 2 of the License, or 13 # (at your option) any later version. 14 # 15 # This program is distributed in the hope that it will be useful, 16 # but WITHOUT ANY WARRANTY; without even the implied warranty of 17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 # GNU General Public License for more details. 19 # 20 # You should have received a copy of the GNU General Public License 21 # along with this program. If not, see <http://www.gnu.org/licenses/>. 22 # 23 24 # creator 25 owner=kwolf@redhat.com 26 27 seq="$(basename $0)" 28 echo "QA output created by $seq" 29 30 status=1 # failure is the default! 31 32 _cleanup() 33 { 34 _cleanup_qemu 35 _cleanup_test_img 36 } 37 trap "_cleanup; exit \$status" 0 1 2 3 15 38 39 # get standard environment, filters and checks 40 . ./common.rc 41 . ./common.filter 42 . ./common.qemu 43 44 _supported_fmt qcow2 45 _supported_proto generic 46 _supported_os Linux 47 # We are going to use lazy-refcounts 48 _unsupported_imgopts 'compat=0.10' 49 50 qemu_comm_method="monitor" 51 52 53 TEST_IMG="$TEST_IMG.orig" _make_test_img 64M 54 TEST_IMG="$TEST_IMG.base" _make_test_img 64M 55 _make_test_img 64M 56 _img_info | _filter_img_info 57 58 echo 59 echo "=== HMP commit ===" 60 echo 61 # bdrv_make_empty() involves a header update for qcow2 62 63 # Test that a backing file isn't written 64 _launch_qemu -drive id=testdisk,file="$TEST_IMG",backing.file.filename="$TEST_IMG.base" 65 _send_qemu_cmd $QEMU_HANDLE "commit testdisk" "(qemu)" 66 _send_qemu_cmd $QEMU_HANDLE '' '(qemu)' 67 _cleanup_qemu 68 _img_info | _filter_img_info 69 70 # Make sure that if there was a backing file that was just overridden on the 71 # command line, that backing file is retained, with the right format 72 _make_test_img -F raw -b "$TEST_IMG.orig" 64M 73 _launch_qemu -drive id=testdisk,file="$TEST_IMG",backing.file.filename="$TEST_IMG.base",backing.driver=$IMGFMT 74 _send_qemu_cmd $QEMU_HANDLE "commit testdisk" "(qemu)" 75 _send_qemu_cmd $QEMU_HANDLE '' '(qemu)' 76 _cleanup_qemu 77 _img_info | _filter_img_info 78 79 echo 80 echo "=== Marking image dirty (lazy refcounts) ===" 81 echo 82 83 # Test that a backing file isn't written 84 _make_test_img 64M 85 $QEMU_IO -c "open -o backing.file.filename=$TEST_IMG.base,lazy-refcounts=on $TEST_IMG" -c "write 0 4k" | _filter_qemu_io 86 _img_info | _filter_img_info 87 88 # Make sure that if there was a backing file that was just overridden on the 89 # command line, that backing file is retained, with the right format 90 _make_test_img -F raw -b "$TEST_IMG.orig" 64M 91 $QEMU_IO -c "open -o backing.file.filename=$TEST_IMG.base,backing.driver=$IMGFMT,lazy-refcounts=on $TEST_IMG" -c "write 0 4k" | _filter_qemu_io 92 _img_info | _filter_img_info 93 94 # success, all done 95 echo '*** done' 96 rm -f $seq.full 97 status=0