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 21seq="$(basename $0)" 22echo "QA output created by $seq" 23 24status=1 # failure is the default! 25 26_cleanup() 27{ 28 _cleanup_test_img 29 _cleanup_qemu 30 rm -f "$TEST_DIR/nbd" 31} 32trap "_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 45do_run_qemu() 46{ 47 echo Testing: "$@" 48 $QEMU -nographic -qmp stdio -serial none "$@" 49 echo 50} 51 52run_qemu() 53{ 54 do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp \ 55 | _filter_qemu | _filter_imgfmt \ 56 | _filter_actual_image_size 57} 58 59echo 60echo "=== Create partially sparse image, then add dirty bitmaps ===" 61echo 62 63# Two bitmaps, to contrast granularity issues 64# Also note that b will be disabled, while b2 is left enabled, to 65# check for read-only interactions 66_make_test_img -o cluster_size=4k 4M 67$QEMU_IO -c 'w -P 0x11 1M 2M' "$TEST_IMG" | _filter_qemu_io 68run_qemu <<EOF 69{ "execute": "qmp_capabilities" } 70{ "execute": "blockdev-add", 71 "arguments": { 72 "driver": "$IMGFMT", 73 "node-name": "n", 74 "file": { 75 "driver": "file", 76 "filename": "$TEST_IMG" 77 } 78 } 79} 80{ "execute": "block-dirty-bitmap-add", 81 "arguments": { 82 "node": "n", 83 "name": "b", 84 "persistent": true, 85 "granularity": 65536 86 } 87} 88{ "execute": "block-dirty-bitmap-add", 89 "arguments": { 90 "node": "n", 91 "name": "b2", 92 "persistent": true, 93 "granularity": 512 94 } 95} 96{ "execute": "quit" } 97EOF 98 99echo 100echo "=== Write part of the file under active bitmap ===" 101echo 102 103$QEMU_IO -c 'w -P 0x22 512 512' -c 'w -P 0x33 2M 2M' "$TEST_IMG" \ 104 | _filter_qemu_io 105 106echo 107echo "=== End dirty bitmaps, and start serving image over NBD ===" 108echo 109 110_launch_qemu 2> >(_filter_nbd) 111 112# Intentionally provoke some errors as well, to check error handling 113silent= 114_send_qemu_cmd $QEMU_HANDLE '{"execute":"qmp_capabilities"}' "return" 115_send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add", 116 "arguments":{"driver":"qcow2", "node-name":"n", 117 "file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return" 118_send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-disable", 119 "arguments":{"node":"n", "name":"b"}}' "return" 120_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 121 "arguments":{"device":"n"}}' "error" # Attempt add without server 122_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start", 123 "arguments":{"addr":{"type":"unix", 124 "data":{"path":"'"$TEST_DIR/nbd"'"}}}}' "return" 125_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start", 126 "arguments":{"addr":{"type":"unix", 127 "data":{"path":"'"$TEST_DIR/nbd"1'"}}}}' "error" # Attempt second server 128_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 129 "arguments":{"device":"n", "bitmap":"b"}}' "return" 130_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 131 "arguments":{"device":"nosuch"}}' "error" # Attempt to export missing node 132_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 133 "arguments":{"device":"n"}}' "error" # Attempt to export same name twice 134_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 135 "arguments":{"device":"n", "name":"n2", 136 "bitmap":"b2"}}' "error" # enabled vs. read-only 137_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 138 "arguments":{"device":"n", "name":"n2", 139 "bitmap":"b3"}}' "error" # Missing bitmap 140_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 141 "arguments":{"device":"n", "name":"n2", "writable":true, 142 "bitmap":"b2"}}' "return" 143 144echo 145echo "=== Contrast normal status to large granularity dirty-bitmap ===" 146echo 147 148QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT 149IMG="driver=nbd,export=n,server.type=unix,server.path=$TEST_DIR/nbd" 150$QEMU_IO -r -c 'r -P 0x22 512 512' -c 'r -P 0 512k 512k' -c 'r -P 0x11 1m 1m' \ 151 -c 'r -P 0x33 2m 2m' --image-opts "$IMG" | _filter_qemu_io 152$QEMU_IMG map --output=json --image-opts \ 153 "$IMG" | _filter_qemu_img_map 154$QEMU_IMG map --output=json --image-opts \ 155 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map 156 157echo 158echo "=== Contrast to small granularity dirty-bitmap ===" 159echo 160 161IMG="driver=nbd,export=n2,server.type=unix,server.path=$TEST_DIR/nbd" 162$QEMU_IMG map --output=json --image-opts \ 163 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map 164 165echo 166echo "=== End NBD server ===" 167echo 168 169_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove", 170 "arguments":{"name":"n"}}' "return" 171_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove", 172 "arguments":{"name":"n2"}}' "return" 173_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove", 174 "arguments":{"name":"n2"}}' "error" # Attempt duplicate clean 175_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return" 176_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "error" # Again 177_send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return" 178 179# success, all done 180echo '*** done' 181rm -f $seq.full 182status=0 183