tests/qemu-iotests/221

   1 #!/usr/bin/env bash
   2 # group: rw quick
   3 #
   4 # Test qemu-img vs. unaligned images
   5 # (See also 253, which is the O_DIRECT version)
   6 #
   7 # Copyright (C) 2018-2019 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 seq="$(basename $0)"
  24 echo "QA output created by $seq"
  25
  26 status=1 # failure is the default!
  27
  28 _cleanup()
  29 {
  30     _cleanup_test_img
  31 }
  32 trap "_cleanup; exit \$status" 0 1 2 3 15
  33
  34 # get standard environment, filters and checks
  35 . ./common.rc
  36 . ./common.filter
  37
  38 _supported_fmt raw
  39 _supported_proto file fuse
  40 _supported_os Linux
  41
  42 _default_cache_mode writeback
  43 _supported_cache_modes writeback writethrough unsafe
  44
  45 echo
  46 echo "=== Check mapping of unaligned raw image ==="
  47 echo
  48
  49 _make_test_img 65537 # qemu-img create rounds size up
  50
  51 # file-posix allocates the first block of any images when it is created;
  52 # the size of this block depends on the host page size and the file
  53 # system block size, none of which are constant.  Discard the whole
  54 # image so we will not see this allocation in qemu-img map's output.
  55 $QEMU_IO -c 'discard 0 65537' "$TEST_IMG" | _filter_qemu_io
  56
  57 $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map
  58
  59 truncate --size=65537 "$TEST_IMG" # so we resize it and check again
  60 $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map
  61
  62 $QEMU_IO -c 'w 65536 1' "$TEST_IMG" | _filter_qemu_io # writing also rounds up
  63 $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map
  64
  65 truncate --size=65537 "$TEST_IMG" # so we resize it and check again
  66 $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map
  67
  68 # success, all done
  69 echo '*** done'
  70 rm -f $seq.full
  71 status=0