tests/qemu-iotests/130

   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