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 $seq" 23 24here="$PWD" 25status=1 # failure is the default! 26 27_cleanup() 28{ 29 _cleanup_test_img 30 _cleanup_qemu 31 rm -f "$TEST_DIR/nbd" 32} 33trap "_cleanup; exit \$status" 0 1 2 3 15 34 35# get standard environment, filters and checks 36. ./common.rc 37. ./common.filter 38. ./common.qemu 39 40_supported_fmt qcow2 41_supported_proto file # uses NBD as well 42_supported_os Linux 43 44function do_run_qemu() 45{ 46 echo Testing: "$@" 47 $QEMU -nographic -qmp stdio -serial none "$@" 48 echo 49} 50 51function run_qemu() 52{ 53 do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp \ 54 | _filter_qemu | _filter_imgfmt \ 55 | _filter_actual_image_size 56} 57 58echo 59echo "=== Create partially sparse image, then add dirty bitmap ===" 60echo 61 62_make_test_img 4M 63$QEMU_IO -c 'w -P 0x11 1M 2M' "$TEST_IMG" | _filter_qemu_io 64run_qemu <<EOF 65{ "execute": "qmp_capabilities" } 66{ "execute": "blockdev-add", 67 "arguments": { 68 "driver": "$IMGFMT", 69 "node-name": "n", 70 "file": { 71 "driver": "file", 72 "filename": "$TEST_IMG" 73 } 74 } 75} 76{ "execute": "block-dirty-bitmap-add", 77 "arguments": { 78 "node": "n", 79 "name": "b", 80 "persistent": true 81 } 82} 83{ "execute": "quit" } 84EOF 85 86echo 87echo "=== Write part of the file under active bitmap ===" 88echo 89 90$QEMU_IO -c 'w -P 0x22 2M 2M' "$TEST_IMG" | _filter_qemu_io 91 92echo 93echo "=== End dirty bitmap, and start serving image over NBD ===" 94echo 95 96_launch_qemu 2> >(_filter_nbd) 97 98silent= 99_send_qemu_cmd $QEMU_HANDLE '{"execute":"qmp_capabilities"}' "return" 100_send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add", 101 "arguments":{"driver":"qcow2", "node-name":"n", 102 "file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return" 103_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-block-dirty-bitmap-disable", 104 "arguments":{"node":"n", "name":"b"}}' "return" 105_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start", 106 "arguments":{"addr":{"type":"unix", 107 "data":{"path":"'"$TEST_DIR/nbd"'"}}}}' "return" 108_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 109 "arguments":{"device":"n"}}' "return" 110_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-nbd-server-add-bitmap", 111 "arguments":{"name":"n", "bitmap":"b"}}' "return" 112 113echo 114echo "=== Contrast normal status with dirty-bitmap status ===" 115echo 116 117QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT 118IMG="driver=nbd,export=n,server.type=unix,server.path=$TEST_DIR/nbd" 119$QEMU_IO -r -c 'r -P 0 0 1m' -c 'r -P 0x11 1m 1m' \ 120 -c 'r -P 0x22 2m 2m' --image-opts "$IMG" | _filter_qemu_io 121$QEMU_IMG map --output=json --image-opts \ 122 "$IMG" | _filter_qemu_img_map 123$QEMU_IMG map --output=json --image-opts \ 124 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map 125 126echo 127echo "=== End NBD server ===" 128echo 129 130_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove", 131 "arguments":{"name":"n"}}' "return" 132_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return" 133_send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return" 134 135# success, all done 136echo '*** done' 137rm -f $seq.full 138status=0 139