xref: /openbmc/qemu/tests/qemu-iotests/241 (revision 812b31d3)
1#!/usr/bin/env bash
2# group: rw quick
3#
4# Test qemu-nbd vs. unaligned images
5#
6# Copyright (C) 2018-2019 Red Hat, Inc.
7#
8# This program is free software; you can redistribute it and/or modify
9# it under the terms of the GNU General Public License as published by
10# the Free Software Foundation; either version 2 of the License, or
11# (at your option) any later version.
12#
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16# GNU General Public License for more details.
17#
18# You should have received a copy of the GNU General Public License
19# along with this program.  If not, see <http://www.gnu.org/licenses/>.
20#
21
22seq="$(basename $0)"
23echo "QA output created by $seq"
24
25status=1 # failure is the default!
26
27_cleanup()
28{
29    _cleanup_test_img
30    rm -f "$TEST_DIR/server.log"
31    nbd_server_stop
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.nbd
39
40_supported_fmt raw
41_supported_proto nbd
42_supported_os Linux
43_require_command QEMU_NBD
44
45# can't use _make_test_img, because qemu-img rounds image size up,
46# and because we want to use Unix socket rather than TCP port. Likewise,
47# we have to redirect TEST_IMG to our server.
48# This tests that we can deal with the hole at the end of an unaligned
49# raw file (either because the server doesn't advertise alignment too
50# large, or because the client ignores the server's noncompliance - even
51# though we can't actually wire iotests into checking trace messages).
52printf %01000d 0 > "$TEST_IMG_FILE"
53TEST_IMG="nbd:unix:$nbd_unix_socket"
54
55echo
56echo "=== Exporting unaligned raw image, natural alignment ==="
57echo
58
59nbd_server_start_unix_socket -f $IMGFMT "$TEST_IMG_FILE"
60
61$QEMU_NBD_PROG --list -k $nbd_unix_socket | grep '\(size\|min\)'
62$QEMU_IMG map -f raw --output=json "$TEST_IMG" | _filter_qemu_img_map
63$QEMU_IO -f raw -c map "$TEST_IMG"
64nbd_server_stop
65
66echo
67echo "=== Exporting unaligned raw image, forced server sector alignment ==="
68echo
69
70# Intentionally omit '-f' to force image probing, which in turn forces
71# sector alignment, here at the server.
72nbd_server_start_unix_socket "$TEST_IMG_FILE" 2> "$TEST_DIR/server.log"
73
74$QEMU_NBD_PROG --list -k $nbd_unix_socket | grep '\(size\|min\)'
75$QEMU_IMG map -f raw --output=json "$TEST_IMG" | _filter_qemu_img_map
76$QEMU_IO -f raw -c map "$TEST_IMG"
77nbd_server_stop
78cat "$TEST_DIR/server.log" | _filter_testdir
79
80echo
81echo "=== Exporting unaligned raw image, forced client sector alignment ==="
82echo
83
84# Now force sector alignment at the client.
85nbd_server_start_unix_socket -f $IMGFMT "$TEST_IMG_FILE"
86
87$QEMU_NBD_PROG --list -k $nbd_unix_socket | grep '\(size\|min\)'
88$QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map
89$QEMU_IO -c map "$TEST_IMG"
90nbd_server_stop
91
92# Not tested yet: we also want to ensure that qemu as NBD client does
93# not access beyond the end of a server's advertised unaligned size:
94#  nbdkit -U - memory size=513 --run 'qemu-io -f raw -c "r 512 512" $nbd'
95# However, since qemu as server always rounds up to a sector alignment,
96# we would have to use nbdkit to provoke the current client failures.
97
98# success, all done
99echo '*** done'
100rm -f $seq.full
101status=0
102