mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-24 20:19:44 +00:00
9dd003a998
We are going to drop group file. Define group in tests as a preparatory
step.
The patch is generated by
cd tests/qemu-iotests
grep '^[0-9]\{3\} ' group | while read line; do
file=$(awk '{print $1}' <<< "$line");
groups=$(sed -e 's/^... //' <<< "$line");
awk "NR==2{print \"# group: $groups\"}1" $file > tmp;
cat tmp > $file;
done
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210116134424.82867-7-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
118 lines
4.3 KiB
Python
Executable File
118 lines
4.3 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
# group: rw quick
|
|
#
|
|
# Copy-on-read tests using a COR filter node
|
|
#
|
|
# Copyright (C) 2018 Red Hat, Inc.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
# Creator/Owner: Max Reitz <mreitz@redhat.com>
|
|
|
|
import iotests
|
|
from iotests import log, qemu_img, qemu_io_silent
|
|
|
|
# Need backing file support
|
|
iotests.script_initialize(supported_fmts=['qcow2', 'qcow', 'qed', 'vmdk'],
|
|
supported_platforms=['linux'])
|
|
|
|
log('')
|
|
log('=== Copy-on-read across nodes ===')
|
|
log('')
|
|
|
|
# The old copy-on-read mechanism without a filter node cannot request
|
|
# WRITE_UNCHANGED permissions for its child. Therefore it just tries
|
|
# to sneak its write by the usual permission system and holds its
|
|
# fingers crossed. However, that sneaking does not work so well when
|
|
# there is a filter node in the way: That will receive the write
|
|
# request and re-issue a new one to its child, which this time is a
|
|
# proper write request that will make the permission system cough --
|
|
# unless there is someone at the top (like a guest device) that has
|
|
# requested write permissions.
|
|
#
|
|
# A COR filter node, however, can request the proper permissions for
|
|
# its child and therefore is not hit by this issue.
|
|
|
|
with iotests.FilePath('base.img') as base_img_path, \
|
|
iotests.FilePath('top.img') as top_img_path, \
|
|
iotests.VM() as vm:
|
|
|
|
log('--- Setting up images ---')
|
|
log('')
|
|
|
|
assert qemu_img('create', '-f', iotests.imgfmt, base_img_path, '64M') == 0
|
|
assert qemu_io_silent(base_img_path, '-c', 'write -P 1 0M 1M') == 0
|
|
assert qemu_img('create', '-f', iotests.imgfmt, '-b', base_img_path,
|
|
'-F', iotests.imgfmt, top_img_path) == 0
|
|
assert qemu_io_silent(top_img_path, '-c', 'write -P 2 1M 1M') == 0
|
|
|
|
log('Done')
|
|
|
|
log('')
|
|
log('--- Doing COR ---')
|
|
log('')
|
|
|
|
# Compare with e.g. the following:
|
|
# vm.add_drive_raw('if=none,node-name=node0,copy-on-read=on,driver=raw,' \
|
|
# 'file.driver=%s,file.file.filename=%s' %
|
|
# (iotests.imgfmt, top_img_path))
|
|
# (Remove the blockdev-add instead.)
|
|
# ((Not tested here because it hits an assertion in the permission
|
|
# system.))
|
|
|
|
vm.launch()
|
|
|
|
log(vm.qmp('blockdev-add',
|
|
node_name='node0',
|
|
driver='copy-on-read',
|
|
file={
|
|
'driver': 'raw',
|
|
'file': {
|
|
'driver': 'copy-on-read',
|
|
'file': {
|
|
'driver': 'raw',
|
|
'file': {
|
|
'driver': iotests.imgfmt,
|
|
'file': {
|
|
'driver': 'file',
|
|
'filename': top_img_path
|
|
},
|
|
'backing': {
|
|
'driver': iotests.imgfmt,
|
|
'file': {
|
|
'driver': 'file',
|
|
'filename': base_img_path
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}))
|
|
|
|
# Trigger COR
|
|
log(vm.qmp('human-monitor-command',
|
|
command_line='qemu-io node0 "read 0 64M"'))
|
|
|
|
vm.shutdown()
|
|
|
|
log('')
|
|
log('--- Checking COR result ---')
|
|
log('')
|
|
|
|
assert qemu_io_silent(base_img_path, '-c', 'discard 0 64M') == 0
|
|
assert qemu_io_silent(top_img_path, '-c', 'read -P 1 0M 1M') == 0
|
|
assert qemu_io_silent(top_img_path, '-c', 'read -P 2 1M 1M') == 0
|
|
|
|
log('Done')
|