tests/qemu-iotests/243

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