tests/qemu-iotests/265

   1 #!/usr/bin/env bash
   2 # group: rw auto quick
   3 #
   4 # Test reverse-ordered qcow2 writes on a sub-cluster level
   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 seq=$(basename $0)
  23 echo "QA output created by $seq"
  24
  25 status=1        # failure is the default!
  26
  27 _cleanup()
  28 {
  29     _cleanup_test_img
  30 }
  31 trap "_cleanup; exit \$status" 0 1 2 3 15
  32
  33 # get standard environment, filters and checks
  34 . ./common.rc
  35 . ./common.filter
  36
  37 # qcow2-specific test
  38 _supported_fmt qcow2
  39 _supported_proto file fuse
  40 _supported_os Linux
  41
  42 echo '--- Writing to the image ---'
  43
  44 # Reduce cluster size so we get more and quicker I/O
  45 _make_test_img -o 'cluster_size=4096' 1M
  46 (for ((kb = 1024 - 4; kb >= 0; kb -= 4)); do \
  47      echo "aio_write -P 42 $((kb + 1))k 2k"; \
  48  done) \
  49  | $QEMU_IO "$TEST_IMG" > /dev/null
  50
  51 echo '--- Verifying its content ---'
  52
  53 (for ((kb = 0; kb < 1024; kb += 4)); do \
  54     echo "read -P 0 ${kb}k 1k"; \
  55     echo "read -P 42 $((kb + 1))k 2k"; \
  56     echo "read -P 0 $((kb + 3))k 1k"; \
  57  done) \
  58  | $QEMU_IO "$TEST_IMG" | _filter_qemu_io | grep 'verification'
  59
  60 # Status of qemu-io
  61 if [ ${PIPESTATUS[1]} = 0 ]; then
  62     echo 'Content verified.'
  63 fi
  64
  65 # success, all done
  66 echo "*** done"
  67 rm -f $seq.full
  68 status=0