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 $seq"
  23
  24 status=1 # failure is the default!
  25
  26 _cleanup()
  27 {
  28     _cleanup_test_img
  29     _cleanup_qemu
  30     rm -f "$TEST_DIR/nbd"
  31 }
  32 trap "_cleanup; exit \$status" 0 1 2 3 15
  33
  34 # get standard environment, filters and checks
  35 . ./common.rc
  36 . ./common.filter
  37 . ./common.qemu
  38
  39 _supported_fmt qcow2
  40 _supported_proto file # uses NBD as well
  41 _supported_os Linux
  42 # Persistent dirty bitmaps require compat=1.1
  43 _unsupported_imgopts 'compat=0.10'
  44
  45 do_run_qemu()
  46 {
  47     echo Testing: "$@"
  48     $QEMU -nographic -qmp stdio -serial none "$@"
  49     echo
  50 }
  51
  52 run_qemu()
  53 {
  54     do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp \
  55                           | _filter_qemu | _filter_imgfmt \
  56                           | _filter_actual_image_size
  57 }
  58
  59 echo
  60 echo "=== Create partially sparse image, then add dirty bitmaps ==="
  61 echo
  62
  63 # Two bitmaps, to contrast granularity issues
  64 _make_test_img -o cluster_size=4k 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     "granularity": 65536
  84   }
  85 }
  86 { "execute": "block-dirty-bitmap-add",
  87   "arguments": {
  88     "node": "n",
  89     "name": "b2",
  90     "persistent": true,
  91     "granularity": 512
  92   }
  93 }
  94 { "execute": "quit" }
  95 EOF
  96
  97 echo
  98 echo "=== Write part of the file under active bitmap ==="
  99 echo
 100
 101 $QEMU_IO -c 'w -P 0x22 512 512' -c 'w -P 0x33 2M 2M' "$TEST_IMG" \
 102     | _filter_qemu_io
 103
 104 echo
 105 echo "=== End dirty bitmaps, and start serving image over NBD ==="
 106 echo
 107
 108 _launch_qemu 2> >(_filter_nbd)
 109
 110 # Intentionally provoke some errors as well, to check error handling
 111 silent=
 112 _send_qemu_cmd $QEMU_HANDLE '{"execute":"qmp_capabilities"}' "return"
 113 _send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add",
 114   "arguments":{"driver":"qcow2", "node-name":"n",
 115     "file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return"
 116 _send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-disable",
 117   "arguments":{"node":"n", "name":"b"}}' "return"
 118 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 119   "arguments":{"device":"n"}}' "error" # Attempt add without server
 120 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
 121   "arguments":{"addr":{"type":"unix",
 122     "data":{"path":"'"$TEST_DIR/nbd"'"}}}}' "return"
 123 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
 124   "arguments":{"addr":{"type":"unix",
 125     "data":{"path":"'"$TEST_DIR/nbd"1'"}}}}' "error" # Attempt second server
 126 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 127   "arguments":{"device":"n"}}' "return"
 128 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 129   "arguments":{"device":"nosuch"}}' "error" # Attempt to export missing node
 130 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 131   "arguments":{"device":"n"}}' "error" # Attempt to export same name twice
 132 _send_qemu_cmd $QEMU_HANDLE '{"execute":"x-nbd-server-add-bitmap",
 133   "arguments":{"name":"n", "bitmap":"b"}}' "return"
 134 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 135   "arguments":{"device":"n", "name":"n2"}}' "return"
 136 _send_qemu_cmd $QEMU_HANDLE '{"execute":"x-nbd-server-add-bitmap",
 137   "arguments":{"name":"n2", "bitmap":"b2"}}' "error" # Attempt enabled bitmap
 138 _send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-disable",
 139   "arguments":{"node":"n", "name":"b2"}}' "return"
 140 _send_qemu_cmd $QEMU_HANDLE '{"execute":"x-nbd-server-add-bitmap",
 141   "arguments":{"name":"n2", "bitmap":"b2"}}' "return"
 142
 143 echo
 144 echo "=== Contrast normal status to large granularity dirty-bitmap ==="
 145 echo
 146
 147 QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT
 148 IMG="driver=nbd,export=n,server.type=unix,server.path=$TEST_DIR/nbd"
 149 $QEMU_IO -r -c 'r -P 0x22 512 512' -c 'r -P 0 512k 512k' -c 'r -P 0x11 1m 1m' \
 150   -c 'r -P 0x33 2m 2m' --image-opts "$IMG" | _filter_qemu_io
 151 $QEMU_IMG map --output=json --image-opts \
 152   "$IMG" | _filter_qemu_img_map
 153 $QEMU_IMG map --output=json --image-opts \
 154   "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map
 155
 156 echo
 157 echo "=== Contrast to small granularity dirty-bitmap ==="
 158 echo
 159
 160 IMG="driver=nbd,export=n2,server.type=unix,server.path=$TEST_DIR/nbd"
 161 $QEMU_IMG map --output=json --image-opts \
 162   "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
 163
 164 echo
 165 echo "=== End NBD server ==="
 166 echo
 167
 168 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
 169   "arguments":{"name":"n"}}' "return"
 170 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
 171   "arguments":{"name":"n2"}}' "return"
 172 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
 173   "arguments":{"name":"n2"}}' "error" # Attempt duplicate clean
 174 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return"
 175 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "error" # Again
 176 _send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return"
 177
 178 # success, all done
 179 echo '*** done'
 180 rm -f $seq.full
 181 status=0