223 (6891B)
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 22seq="$(basename $0)" 23echo "QA output created by $seq" 24 25status=1 # failure is the default! 26 27_cleanup() 28{ 29 nbd_server_stop 30 _cleanup_test_img 31 _cleanup_qemu 32 rm -f "$SOCK_DIR/nbd" 33} 34trap "_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 48do_run_qemu() 49{ 50 echo Testing: "$@" 51 $QEMU -nographic -qmp stdio -serial none "$@" 52 echo 53} 54 55run_qemu() 56{ 57 do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp \ 58 | _filter_qemu | _filter_imgfmt \ 59 | _filter_actual_image_size 60} 61 62echo 63echo "=== Create partially sparse image, then add dirty bitmaps ===" 64echo 65 66# Two bitmaps, to contrast granularity issues 67# Also note that b will be disabled, while b2 is left enabled, to 68# check for read-only interactions 69_make_test_img -o cluster_size=4k 4M 70$QEMU_IO -c 'w -P 0x11 1M 2M' "$TEST_IMG" | _filter_qemu_io 71run_qemu <<EOF 72{ "execute": "qmp_capabilities" } 73{ "execute": "blockdev-add", 74 "arguments": { 75 "driver": "$IMGFMT", 76 "node-name": "n", 77 "file": { 78 "driver": "file", 79 "filename": "$TEST_IMG" 80 } 81 } 82} 83{ "execute": "block-dirty-bitmap-add", 84 "arguments": { 85 "node": "n", 86 "name": "b", 87 "persistent": true, 88 "granularity": 65536 89 } 90} 91{ "execute": "block-dirty-bitmap-add", 92 "arguments": { 93 "node": "n", 94 "name": "b2", 95 "persistent": true, 96 "granularity": 512 97 } 98} 99{ "execute": "quit" } 100EOF 101 102echo 103echo "=== Write part of the file under active bitmap ===" 104echo 105 106$QEMU_IO -c 'w -P 0x22 512 512' -c 'w -P 0x33 2M 2M' "$TEST_IMG" \ 107 | _filter_qemu_io 108 109echo 110echo "=== End dirty bitmaps, and start serving image over NBD ===" 111echo 112 113_launch_qemu -object iothread,id=io0 2> >(_filter_nbd) 114 115# Intentionally provoke some errors as well, to check error handling 116silent= 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 124for attempt in normal iothread; do 125 126echo 127echo "=== Set up NBD with $attempt access ===" 128echo 129if [ $attempt = iothread ]; then 130_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-blockdev-set-iothread", 131 "arguments":{"node-name":"n", "iothread":"io0"}}' "return" 132fi 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 "$SOCK_DIR/nbd" 159 160echo 161echo "=== Contrast normal status to large granularity dirty-bitmap ===" 162echo 163 164QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT 165IMG="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 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map 172 173echo 174echo "=== Contrast to small granularity dirty-bitmap ===" 175echo 176 177IMG="driver=nbd,export=n2,server.type=unix,server.path=$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 181echo 182echo "=== End qemu NBD server ===" 183echo 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 194done 195 196_send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return" 197wait=yes _cleanup_qemu 198 199echo 200echo "=== Use qemu-nbd as server ===" 201echo 202 203nbd_server_start_unix_socket -r -f $IMGFMT -B b "$TEST_IMG" 204IMG="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 208nbd_server_start_unix_socket -f $IMGFMT -B b2 "$TEST_IMG" 209IMG="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 216echo '*** done' 217rm -f $seq.full 218status=0