tests/qemu-iotests/130

   1 #!/bin/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 $seq"
  28
  29 here="$PWD"
  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 _unsupported_proto vxhs
  47 _supported_os Linux
  48 # We are going to use lazy-refcounts
  49 _unsupported_imgopts 'compat=0.10'
  50
  51 qemu_comm_method="monitor"
  52
  53
  54 TEST_IMG="$TEST_IMG.orig" _make_test_img 64M
  55 TEST_IMG="$TEST_IMG.base" _make_test_img 64M
  56 _make_test_img 64M
  57 _img_info | _filter_img_info
  58
  59 echo
  60 echo "=== HMP commit ==="
  61 echo
  62 # bdrv_make_empty() involves a header update for qcow2
  63
  64 # Test that a backing file isn't written
  65 _launch_qemu -drive id=testdisk,file="$TEST_IMG",backing.file.filename="$TEST_IMG.base"
  66 _send_qemu_cmd $QEMU_HANDLE "commit testdisk" "(qemu)"
  67 _send_qemu_cmd $QEMU_HANDLE '' '(qemu)'
  68 _cleanup_qemu
  69 _img_info | _filter_img_info
  70
  71 # Make sure that if there was a backing file that was just overridden on the
  72 # command line, that backing file is retained, with the right format
  73 _make_test_img -F raw -b "$TEST_IMG.orig" 64M
  74 _launch_qemu -drive id=testdisk,file="$TEST_IMG",backing.file.filename="$TEST_IMG.base",backing.driver=$IMGFMT
  75 _send_qemu_cmd $QEMU_HANDLE "commit testdisk" "(qemu)"
  76 _send_qemu_cmd $QEMU_HANDLE '' '(qemu)'
  77 _cleanup_qemu
  78 _img_info | _filter_img_info
  79
  80 echo
  81 echo "=== Marking image dirty (lazy refcounts) ==="
  82 echo
  83
  84 # Test that a backing file isn't written
  85 _make_test_img 64M
  86 $QEMU_IO -c "open -o backing.file.filename=$TEST_IMG.base,lazy-refcounts=on $TEST_IMG" -c "write 0 4k" | _filter_qemu_io
  87 _img_info | _filter_img_info
  88
  89 # Make sure that if there was a backing file that was just overridden on the
  90 # command line, that backing file is retained, with the right format
  91 _make_test_img -F raw -b "$TEST_IMG.orig" 64M
  92 $QEMU_IO -c "open -o backing.file.filename=$TEST_IMG.base,backing.driver=$IMGFMT,lazy-refcounts=on $TEST_IMG" -c "write 0 4k" | _filter_qemu_io
  93 _img_info | _filter_img_info
  94
  95 # success, all done
  96 echo '*** done'
  97 rm -f $seq.full
  98 status=0