tests/qemu-iotests/tests/detect-zeroes-registered-buf

   1 #!/usr/bin/env bash
   2 # group: rw auto quick
   3 #
   4 # Check that detect-zeroes=unmap works on writes with registered I/O buffers.
   5 # This is a regression test for
   6 # https://gitlab.com/qemu-project/qemu/-/issues/1404 where I/O requests failed
   7 # unexpectedly.
   8 #
   9 # Copyright Red Hat
  10 #
  11 # This program is free software; you can redistribute it and/or modify
  12 # it under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation; either version 2 of the License, or
  14 # (at your option) any later version.
  15 #
  16 # This program is distributed in the hope that it will be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 #
  24
  25 # creator
  26 owner=stefanha@redhat.com
  27
  28 seq=`basename $0`
  29 echo "QA output created by $seq"
  30
  31 status=1        # failure is the default!
  32
  33 _cleanup()
  34 {
  35         _cleanup_test_img
  36 }
  37 trap "_cleanup; exit \$status" 0 1 2 3 15
  38
  39 IMGOPTSSYNTAX=true
  40
  41 # get standard environment, filters and checks
  42 cd ..
  43 . ./common.rc
  44 . ./common.filter
  45
  46 _supported_fmt qcow2
  47 _supported_proto generic
  48
  49 size=128M
  50 _make_test_img $size
  51 IMGSPEC="$TEST_IMG,discard=unmap,detect-zeroes=unmap"
  52
  53 echo
  54 echo "== writing zero buffer to image =="
  55 QEMU_IO_OPTIONS="$QEMU_IO_OPTIONS_NO_FMT" $QEMU_IO -c "write -r -P 0 0 4k" --image-opts "$IMGSPEC" | _filter_qemu_io
  56
  57 # success, all done
  58 echo "*** done"
  59 rm -f $seq.full
  60 status=0