tests/qemu-iotests/243

   1 #!/usr/bin/env bash
   2 # group: rw quick
   3 #
   4 # Test qcow2 preallocation
   5 #
   6 # Copyright (C) 2019 Red Hat, Inc.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21
  22 # creator
  23 owner=kwolf@redhat.com
  24
  25 seq=$(basename $0)
  26 echo "QA output created by $seq"
  27
  28 status=1        # failure is the default!
  29
  30 _cleanup()
  31 {
  32     _cleanup_test_img
  33     _rm_test_img "$TEST_IMG.data"
  34 }
  35 trap "_cleanup; exit \$status" 0 1 2 3 15
  36
  37 # get standard environment, filters and checks
  38 . ./common.rc
  39 . ./common.filter
  40
  41 _supported_fmt qcow2
  42 _supported_proto file
  43 _supported_os Linux
  44 # External data files do not work with compat=0.10, and because there
  45 # is an explicit case for external data files here, we cannot allow
  46 # the user to specify whether to use one
  47 _unsupported_imgopts 'compat=0.10' data_file
  48
  49 for mode in off metadata falloc full; do
  50
  51     echo
  52     echo "=== preallocation=$mode ==="
  53     echo
  54
  55     _make_test_img -o "preallocation=$mode,extent_size_hint=0" 64M
  56
  57     printf "File size: "
  58     du -b $TEST_IMG | cut -f1
  59
  60     # Can't use precise numbers here because they differ between filesystems
  61     printf "Disk usage: "
  62     [ $(du -B1 $TEST_IMG | cut -f1) -lt 1048576 ] && echo "low" || echo "high"
  63
  64 done
  65
  66 for mode in off metadata falloc full; do
  67
  68     echo
  69     echo "=== External data file: preallocation=$mode ==="
  70     echo
  71
  72     _make_test_img \
  73         -o "data_file=$TEST_IMG.data,preallocation=$mode,extent_size_hint=0" 64M
  74
  75     echo -n "qcow2 file size: "
  76     du -b $TEST_IMG | cut -f1
  77     echo -n "data file size:  "
  78     du -b $TEST_IMG.data | cut -f1
  79
  80     # Can't use precise numbers here because they differ between filesystems
  81     echo -n "qcow2 disk usage: "
  82     [ $(du -B1 $TEST_IMG | cut -f1) -lt 1048576 ] && echo "low" || echo "high"
  83     echo -n "data disk usage:  "
  84     [ $(du -B1 $TEST_IMG.data | cut -f1) -lt 2097152 ] && echo "low" || echo "high"
  85
  86 done
  87
  88 # success, all done
  89 echo "*** done"
  90 rm -f $seq.full
  91 status=0