tests/qemu-iotests/223

   1 #!/usr/bin/env bash
   2 # group: rw quick
   3 #
   4 # Test reading dirty bitmap over NBD
   5 #
   6 # Copyright (C) 2018-2020 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 $seq"
  24
  25 status=1 # failure is the default!
  26
  27 _cleanup()
  28 {
  29     nbd_server_stop
  30     _cleanup_test_img
  31     _cleanup_qemu
  32     rm -f "$SOCK_DIR/nbd"
  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 . ./common.qemu
  40 . ./common.nbd
  41
  42 _supported_fmt qcow2
  43 _supported_proto file # uses NBD as well
  44 _supported_os Linux
  45 # Persistent dirty bitmaps require compat=1.1
  46 _unsupported_imgopts 'compat=0.10'
  47
  48 do_run_qemu()
  49 {
  50     echo Testing: "$@"
  51     $QEMU -nographic -qmp stdio -serial none "$@"
  52     echo
  53 }
  54
  55 run_qemu()
  56 {
  57     do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp \
  58                           | _filter_qemu | _filter_imgfmt \
  59                           | _filter_actual_image_size
  60 }
  61
  62 echo
  63 echo "=== Create partially sparse image, then add dirty bitmaps ==="
  64 echo
  65
  66 # Two bitmaps, to contrast granularity issues
  67 # Also note that b will be disabled, while b2 is left enabled, to
  68 # check for read-only interactions
  69 _make_test_img -o cluster_size=4k 4M
  70 $QEMU_IO -c 'w -P 0x11 1M 2M' "$TEST_IMG" | _filter_qemu_io
  71 run_qemu <<EOF
  72 { "execute": "qmp_capabilities" }
  73 { "execute": "blockdev-add",
  74   "arguments": {
  75     "driver": "$IMGFMT",
  76     "node-name": "n",
  77     "file": {
  78       "driver": "file",
  79       "filename": "$TEST_IMG"
  80     }
  81   }
  82 }
  83 { "execute": "block-dirty-bitmap-add",
  84   "arguments": {
  85     "node": "n",
  86     "name": "b",
  87     "persistent": true,
  88     "granularity": 65536
  89   }
  90 }
  91 { "execute": "block-dirty-bitmap-add",
  92   "arguments": {
  93     "node": "n",
  94     "name": "b2",
  95     "persistent": true,
  96     "granularity": 512
  97   }
  98 }
  99 { "execute": "quit" }
 100 EOF
 101
 102 echo
 103 echo "=== Write part of the file under active bitmap ==="
 104 echo
 105
 106 $QEMU_IO -c 'w -P 0x22 512 512' -c 'w -P 0x33 2M 2M' "$TEST_IMG" \
 107     | _filter_qemu_io
 108
 109 echo
 110 echo "=== End dirty bitmaps, and start serving image over NBD ==="
 111 echo
 112
 113 _launch_qemu -object iothread,id=io0 2> >(_filter_nbd)
 114
 115 # Intentionally provoke some errors as well, to check error handling
 116 silent=
 117 _send_qemu_cmd $QEMU_HANDLE '{"execute":"qmp_capabilities"}' "return"
 118 _send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add",
 119   "arguments":{"driver":"qcow2", "node-name":"n",
 120     "file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return"
 121 _send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-disable",
 122   "arguments":{"node":"n", "name":"b"}}' "return"
 123
 124 for attempt in normal iothread; do
 125
 126 echo
 127 echo "=== Set up NBD with $attempt access ==="
 128 echo
 129 if [ $attempt = iothread ]; then
 130 _send_qemu_cmd $QEMU_HANDLE '{"execute":"x-blockdev-set-iothread",
 131   "arguments":{"node-name":"n", "iothread":"io0"}}' "return"
 132 fi
 133
 134 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 135   "arguments":{"device":"n"}}' "error" # Attempt add without server
 136 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
 137   "arguments":{"addr":{"type":"unix",
 138     "data":{"path":"'"$SOCK_DIR/nbd"'"}}}}' "return"
 139 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
 140   "arguments":{"addr":{"type":"unix",
 141     "data":{"path":"'"$SOCK_DIR/nbd"1'"}}}}' "error" # Attempt second server
 142 $QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd"
 143 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 144   "arguments":{"device":"n", "bitmap":"b"}}' "return"
 145 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 146   "arguments":{"device":"nosuch"}}' "error" # Attempt to export missing node
 147 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 148   "arguments":{"device":"n"}}' "error" # Attempt to export same name twice
 149 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 150   "arguments":{"device":"n", "name":"n2",
 151   "bitmap":"b2"}}' "error" # enabled vs. read-only
 152 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 153   "arguments":{"device":"n", "name":"n2",
 154   "bitmap":"b3"}}' "error" # Missing bitmap
 155 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
 156   "arguments":{"device":"n", "name":"n2", "writable":true,
 157   "description":"some text", "bitmap":"b2"}}' "return"
 158 $QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd"
 159
 160 echo
 161 echo "=== Contrast normal status to large granularity dirty-bitmap ==="
 162 echo
 163
 164 QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT
 165 IMG="driver=nbd,export=n,server.type=unix,server.path=$SOCK_DIR/nbd"
 166 $QEMU_IO -r -c 'r -P 0x22 512 512' -c 'r -P 0 512k 512k' -c 'r -P 0x11 1m 1m' \
 167   -c 'r -P 0x33 2m 2m' --image-opts "$IMG" | _filter_qemu_io
 168 $QEMU_IMG map --output=json --image-opts \
 169   "$IMG" | _filter_qemu_img_map
 170 $QEMU_IMG map --output=json --image-opts \
 171   "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map
 172
 173 echo
 174 echo "=== Contrast to small granularity dirty-bitmap ==="
 175 echo
 176
 177 IMG="driver=nbd,export=n2,server.type=unix,server.path=$SOCK_DIR/nbd"
 178 $QEMU_IMG map --output=json --image-opts \
 179   "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
 180
 181 echo
 182 echo "=== End qemu NBD server ==="
 183 echo
 184
 185 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
 186   "arguments":{"name":"n"}}' "return"
 187 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
 188   "arguments":{"name":"n2"}}' "return"
 189 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
 190   "arguments":{"name":"n2"}}' "error" # Attempt duplicate clean
 191 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return"
 192 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "error" # Again
 193
 194 done
 195
 196 _send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return"
 197 wait=yes _cleanup_qemu
 198
 199 echo
 200 echo "=== Use qemu-nbd as server ==="
 201 echo
 202
 203 nbd_server_start_unix_socket -r -f $IMGFMT -B b "$TEST_IMG"
 204 IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket"
 205 $QEMU_IMG map --output=json --image-opts \
 206   "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map
 207
 208 nbd_server_start_unix_socket -f $IMGFMT -B b2 "$TEST_IMG"
 209 IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket"
 210 $QEMU_IMG map --output=json --image-opts --max-length=12345 \
 211   "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
 212 $QEMU_IMG map --output=json --image-opts --start-offset=12345 \
 213   "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
 214
 215 # success, all done
 216 echo '*** done'
 217 rm -f $seq.full
 218 status=0