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