1#!/bin/bash 2# 3# Test qemu-nbd vs. unaligned images 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 21seq="$(basename $0)" 22echo "QA output created by $seq" 23 24status=1 # failure is the default! 25 26nbd_unix_socket=$TEST_DIR/test_qemu_nbd_socket 27 28_cleanup() 29{ 30 _cleanup_test_img 31 rm -f "$TEST_DIR/server.log" 32 nbd_server_stop 33} 34trap "_cleanup; exit \$status" 0 1 2 3 15 35 36# get standard environment, filters and checks 37. ./common.rc 38. ./common.filter 39. ./common.nbd 40 41_supported_fmt raw 42_supported_proto nbd 43_supported_os Linux 44_require_command QEMU_NBD 45 46# can't use _make_test_img, because qemu-img rounds image size up, 47# and because we want to use Unix socket rather than TCP port. Likewise, 48# we have to redirect TEST_IMG to our server. 49# This tests that we can deal with the hole at the end of an unaligned 50# raw file (either because the server doesn't advertise alignment too 51# large, or because the client ignores the server's noncompliance - even 52# though we can't actually wire iotests into checking trace messages). 53printf %01000d 0 > "$TEST_IMG_FILE" 54TEST_IMG="nbd:unix:$nbd_unix_socket" 55 56echo 57echo "=== Exporting unaligned raw image, natural alignment ===" 58echo 59 60nbd_server_start_unix_socket -f $IMGFMT "$TEST_IMG_FILE" 61 62$QEMU_NBD_PROG --list -k $nbd_unix_socket | grep '\(size\|min\)' 63$QEMU_IMG map -f raw --output=json "$TEST_IMG" | _filter_qemu_img_map 64$QEMU_IO -f raw -c map "$TEST_IMG" 65nbd_server_stop 66 67echo 68echo "=== Exporting unaligned raw image, forced server sector alignment ===" 69echo 70 71# Intentionally omit '-f' to force image probing, which in turn forces 72# sector alignment, here at the server. 73nbd_server_start_unix_socket "$TEST_IMG_FILE" 2> "$TEST_DIR/server.log" 74 75$QEMU_NBD_PROG --list -k $nbd_unix_socket | grep '\(size\|min\)' 76$QEMU_IMG map -f raw --output=json "$TEST_IMG" | _filter_qemu_img_map 77$QEMU_IO -f raw -c map "$TEST_IMG" 78nbd_server_stop 79cat "$TEST_DIR/server.log" | _filter_testdir 80 81echo 82echo "=== Exporting unaligned raw image, forced client sector alignment ===" 83echo 84 85# Now force sector alignment at the client. 86nbd_server_start_unix_socket -f $IMGFMT "$TEST_IMG_FILE" 87 88$QEMU_NBD_PROG --list -k $nbd_unix_socket | grep '\(size\|min\)' 89$QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map 90$QEMU_IO -c map "$TEST_IMG" 91nbd_server_stop 92 93# Not tested yet: we also want to ensure that qemu as NBD client does 94# not access beyond the end of a server's advertised unaligned size: 95# nbdkit -U - memory size=513 --run 'qemu-io -f raw -c "r 512 512" $nbd' 96# However, since qemu as server always rounds up to a sector alignment, 97# we would have to use nbdkit to provoke the current client failures. 98 99# success, all done 100echo '*** done' 101rm -f $seq.full 102status=0 103