tests/qemu-iotests/130

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