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 "$TEST_DIR/nbd" 32} 33trap "_cleanup; exit \$status" 0 1 2 3 15 34 35# get standard environment, filters and checks 36. ./common.rc 37. ./common.filter 38. ./common.qemu 39 40_supported_fmt qcow2 41_supported_proto file # uses NBD as well 42_supported_os Linux 43# Persistent dirty bitmaps require compat=1.1 44_unsupported_imgopts 'compat=0.10' 45 46function do_run_qemu() 47{ 48 echo Testing: "$@" 49 $QEMU -nographic -qmp stdio -serial none "$@" 50 echo 51} 52 53function run_qemu() 54{ 55 do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp \ 56 | _filter_qemu | _filter_imgfmt \ 57 | _filter_actual_image_size 58} 59 60echo 61echo "=== Create partially sparse image, then add dirty bitmap ===" 62echo 63 64_make_test_img 4M 65$QEMU_IO -c 'w -P 0x11 1M 2M' "$TEST_IMG" | _filter_qemu_io 66run_qemu <<EOF 67{ "execute": "qmp_capabilities" } 68{ "execute": "blockdev-add", 69 "arguments": { 70 "driver": "$IMGFMT", 71 "node-name": "n", 72 "file": { 73 "driver": "file", 74 "filename": "$TEST_IMG" 75 } 76 } 77} 78{ "execute": "block-dirty-bitmap-add", 79 "arguments": { 80 "node": "n", 81 "name": "b", 82 "persistent": true 83 } 84} 85{ "execute": "quit" } 86EOF 87 88echo 89echo "=== Write part of the file under active bitmap ===" 90echo 91 92$QEMU_IO -c 'w -P 0x22 2M 2M' "$TEST_IMG" | _filter_qemu_io 93 94echo 95echo "=== End dirty bitmap, and start serving image over NBD ===" 96echo 97 98_launch_qemu 2> >(_filter_nbd) 99 100silent= 101_send_qemu_cmd $QEMU_HANDLE '{"execute":"qmp_capabilities"}' "return" 102_send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add", 103 "arguments":{"driver":"qcow2", "node-name":"n", 104 "file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return" 105_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-block-dirty-bitmap-disable", 106 "arguments":{"node":"n", "name":"b"}}' "return" 107_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start", 108 "arguments":{"addr":{"type":"unix", 109 "data":{"path":"'"$TEST_DIR/nbd"'"}}}}' "return" 110_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add", 111 "arguments":{"device":"n"}}' "return" 112_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-nbd-server-add-bitmap", 113 "arguments":{"name":"n", "bitmap":"b"}}' "return" 114 115echo 116echo "=== Contrast normal status with dirty-bitmap status ===" 117echo 118 119QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT 120IMG="driver=nbd,export=n,server.type=unix,server.path=$TEST_DIR/nbd" 121$QEMU_IO -r -c 'r -P 0 0 1m' -c 'r -P 0x11 1m 1m' \ 122 -c 'r -P 0x22 2m 2m' --image-opts "$IMG" | _filter_qemu_io 123$QEMU_IMG map --output=json --image-opts \ 124 "$IMG" | _filter_qemu_img_map 125$QEMU_IMG map --output=json --image-opts \ 126 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map 127 128echo 129echo "=== End NBD server ===" 130echo 131 132_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove", 133 "arguments":{"name":"n"}}' "return" 134_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return" 135_send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return" 136 137# success, all done 138echo '*** done' 139rm -f $seq.full 140status=0 141