tests/qemu-iotests/223

   1 #!/bin/bash
   2 #
   3 # Test reading dirty bitmap over NBD
   4 #
   5 # Copyright (C) 2018 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 seq="$(basename $0)"
  22 echo "QA output created by $seq"
  23
  24 here="$PWD"
  25 status=1 # failure is the default!
  26
  27 _cleanup()
  28 {
  29     _cleanup_test_img
  30     _cleanup_qemu
  31     rm -f "$TEST_DIR/nbd"
  32 }
  33 trap "_cleanup; exit \$status" 0 1 2 3 15
  34
  35 # get standard environment, filters and checks
  36 . ./common.rc
  37 . ./common.filter
  38 . ./common.qemu
  39
  40 _supported_fmt qcow2
  41 _supported_proto file # uses NBD as well
  42 _supported_os Linux
  43 # Persistent dirty bitmaps require compat=1.1
  44 _unsupported_imgopts 'compat=0.10'
  45
  46 function do_run_qemu()
  47 {
  48     echo Testing: "$@"
  49     $QEMU -nographic -qmp stdio -serial none "$@"
  50     echo
  51 }
  52
  53 function run_qemu()
  54 {
  55     do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp \
  56                           | _filter_qemu | _filter_imgfmt \
  57                           | _filter_actual_image_size
  58 }
  59
  60 echo
  61 echo "=== Create partially sparse image, then add dirty bitmap ==="
  62 echo
  63
  64 _make_test_img 4M
  65 $QEMU_IO -c 'w -P 0x11 1M 2M' "$TEST_IMG" | _filter_qemu_io
  66 run_qemu <<EOF
  67 { "execute": "qmp_capabilities" }
  68 { "execute": "blockdev-add",
  69   "arguments": {
  70     "driver": "$IMGFMT",
  71     "node-name": "n",
  72     "file": {
  73       "driver": "file",
  74       "filename": "$TEST_IMG"
  75     }
  76   }
  77 }
  78 { "execute": "block-dirty-bitmap-add",
  79   "arguments": {
  80     "node": "n",
  81     "name": "b",
  82     "persistent": true
  83   }
  84 }
  85 { "execute": "quit" }
  86 EOF
  87
  88 echo
  89 echo "=== Write part of the file under active bitmap ==="
  90 echo
  91
  92 $QEMU_IO -c 'w -P 0x22 2M 2M' "$TEST_IMG" | _filter_qemu_io
  93
  94 echo
  95 echo "=== End dirty bitmap, and start serving image over NBD ==="
  96 echo
  97
  98 _launch_qemu 2> >(_filter_nbd)
  99
 100 silent=
 101 _send_qemu_cmd $QEMU_HANDLE '{"execute":"qmp_capabilities"}' "return"
 102 _send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add",
 103   "arguments":{"driver":"qcow2", "node-name":"n",
 104     "file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return"
 105 _send_qemu_cmd $QEMU_HANDLE '{"execute":"x-block-dirty-bitmap-disable",
 106   "arguments":{"node":"n", "name":"b"}}' "return"
 107 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
 108   "arguments":{"addr":{"type":"unix",
 109     "data":{"path":"'"$TEST_DIR/nbd"'"}}}}' "return"
 110 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 111   "arguments":{"device":"n"}}' "return"
 112 _send_qemu_cmd $QEMU_HANDLE '{"execute":"x-nbd-server-add-bitmap",
 113   "arguments":{"name":"n", "bitmap":"b"}}' "return"
 114
 115 echo
 116 echo "=== Contrast normal status with dirty-bitmap status ==="
 117 echo
 118
 119 QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT
 120 IMG="driver=nbd,export=n,server.type=unix,server.path=$TEST_DIR/nbd"
 121 $QEMU_IO -r -c 'r -P 0 0 1m' -c 'r -P 0x11 1m 1m' \
 122   -c 'r -P 0x22 2m 2m' --image-opts "$IMG" | _filter_qemu_io
 123 $QEMU_IMG map --output=json --image-opts \
 124   "$IMG" | _filter_qemu_img_map
 125 $QEMU_IMG map --output=json --image-opts \
 126   "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map
 127
 128 echo
 129 echo "=== End NBD server ==="
 130 echo
 131
 132 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
 133   "arguments":{"name":"n"}}' "return"
 134 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return"
 135 _send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return"
 136
 137 # success, all done
 138 echo '*** done'
 139 rm -f $seq.full
 140 status=0