1 #!/usr/bin/env bash 2 # 3 # Test reading dirty bitmap over NBD 4 # 5 # Copyright (C) 2018-2019 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 $seq" 23 24 status=1 # failure is the default! 25 26 _cleanup() 27 { 28 nbd_server_stop 29 _cleanup_test_img 30 _cleanup_qemu 31 rm -f "$SOCK_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 . ./common.nbd 40 41 _supported_fmt qcow2 42 _supported_proto file # uses NBD as well 43 _supported_os Linux 44 # Persistent dirty bitmaps require compat=1.1 45 _unsupported_imgopts 'compat=0.10' 46 47 do_run_qemu() 48 { 49 echo Testing: "$@" 50 $QEMU -nographic -qmp stdio -serial none "$@" 51 echo 52 } 53 54 run_qemu() 55 { 56 do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp \ 57 | _filter_qemu | _filter_imgfmt \ 58 | _filter_actual_image_size 59 } 60 61 echo 62 echo "=== Create partially sparse image, then add dirty bitmaps ===" 63 echo 64 65 # Two bitmaps, to contrast granularity issues 66 # Also note that b will be disabled, while b2 is left enabled, to 67 # check for read-only interactions 68 _make_test_img -o cluster_size=4k 4M 69 $QEMU_IO -c 'w -P 0x11 1M 2M' "$TEST_IMG" | _filter_qemu_io 70 run_qemu <<EOF 71 { "execute": "qmp_capabilities" } 72 { "execute": "blockdev-add", 73 "arguments": { 74 "driver": "$IMGFMT", 75 "node-name": "n", 76 "file": { 77 "driver": "file", 78 "filename": "$TEST_IMG" 79 } 80 } 81 } 82 { "execute": "block-dirty-bitmap-add", 83 "arguments": { 84 "node": "n", 85 "name": "b", 86 "persistent": true, 87 "granularity": 65536 88 } 89 } 90 { "execute": "block-dirty-bitmap-add", 91 "arguments": { 92 "node": "n", 93 "name": "b2", 94 "persistent": true, 95 "granularity": 512 96 } 97 } 98 { "execute": "quit" } 99 EOF 100 101 echo 102 echo "=== Write part of the file under active bitmap ===" 103 echo 104 105 $QEMU_IO -c 'w -P 0x22 512 512' -c 'w -P 0x33 2M 2M' "$TEST_IMG" \ 106 | _filter_qemu_io 107 108 echo 109 echo "=== End dirty bitmaps, and start serving image over NBD ===" 110 echo 111 112 _launch_qemu -object iothread,id=io0 2> >(_filter_nbd) 113 114 # Intentionally provoke some errors as well, to check error handling 115 silent= 116 _send_qemu_cmd $QEMU_HANDLE '{"execute":"qmp_capabilities"}' "return" 117 _send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add", 118 "arguments":{"driver":"qcow2", "node-name":"n", 119 "file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return" 120 _send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-disable", 121 "arguments":{"node":"n", "name":"b"}}' "return" 122 123 for attempt in normal iothread; do 124 125 echo 126 echo "=== Set up NBD with $attempt access ===" 127 echo 128 if [ $attempt = iothread ]; then 129 _send_qemu_cmd $QEMU_HANDLE '{"execute":"x-blockdev-set-iothread", 130 "arguments":{"node-name":"n", "iothread":"io0"}}' "return" 131 fi 132 133 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 134 "arguments":{"device":"n"}}' "error" # Attempt add without server 135 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start", 136 "arguments":{"addr":{"type":"unix", 137 "data":{"path":"'"$SOCK_DIR/nbd"'"}}}}' "return" 138 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start", 139 "arguments":{"addr":{"type":"unix", 140 "data":{"path":"'"$SOCK_DIR/nbd"1'"}}}}' "error" # Attempt second server 141 $QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd" 142 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 143 "arguments":{"device":"n", "bitmap":"b"}}' "return" 144 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 145 "arguments":{"device":"nosuch"}}' "error" # Attempt to export missing node 146 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 147 "arguments":{"device":"n"}}' "error" # Attempt to export same name twice 148 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 149 "arguments":{"device":"n", "name":"n2", 150 "bitmap":"b2"}}' "error" # enabled vs. read-only 151 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 152 "arguments":{"device":"n", "name":"n2", 153 "bitmap":"b3"}}' "error" # Missing bitmap 154 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 155 "arguments":{"device":"n", "name":"n2", "writable":true, 156 "description":"some text", "bitmap":"b2"}}' "return" 157 $QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd" 158 159 echo 160 echo "=== Contrast normal status to large granularity dirty-bitmap ===" 161 echo 162 163 QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT 164 IMG="driver=nbd,export=n,server.type=unix,server.path=$SOCK_DIR/nbd" 165 $QEMU_IO -r -c 'r -P 0x22 512 512' -c 'r -P 0 512k 512k' -c 'r -P 0x11 1m 1m' \ 166 -c 'r -P 0x33 2m 2m' --image-opts "$IMG" | _filter_qemu_io 167 $QEMU_IMG map --output=json --image-opts \ 168 "$IMG" | _filter_qemu_img_map 169 $QEMU_IMG map --output=json --image-opts \ 170 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map 171 172 echo 173 echo "=== Contrast to small granularity dirty-bitmap ===" 174 echo 175 176 IMG="driver=nbd,export=n2,server.type=unix,server.path=$SOCK_DIR/nbd" 177 $QEMU_IMG map --output=json --image-opts \ 178 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map 179 180 echo 181 echo "=== End qemu NBD server ===" 182 echo 183 184 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove", 185 "arguments":{"name":"n"}}' "return" 186 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove", 187 "arguments":{"name":"n2"}}' "return" 188 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove", 189 "arguments":{"name":"n2"}}' "error" # Attempt duplicate clean 190 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return" 191 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "error" # Again 192 193 done 194 195 _send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return" 196 wait=yes _cleanup_qemu 197 198 echo 199 echo "=== Use qemu-nbd as server ===" 200 echo 201 202 nbd_server_start_unix_socket -r -f $IMGFMT -B b "$TEST_IMG" 203 IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket" 204 $QEMU_IMG map --output=json --image-opts \ 205 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map 206 207 nbd_server_start_unix_socket -f $IMGFMT -B b2 "$TEST_IMG" 208 IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket" 209 $QEMU_IMG map --output=json --image-opts \ 210 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map 211 212 # success, all done 213 echo '*** done' 214 rm -f $seq.full 215 status=0 216