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#!/usr/bin/env python3
#
# Test qcow2 and file image creation
#
# Copyright (C) 2018 Red Hat, Inc.
#
# Creator/Owner: Kevin Wolf <kwolf@redhat.com>
#
# 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/>.
#
import iotests
from iotests import imgfmt
iotests.script_initialize(supported_fmts=['qcow2'])
iotests.verify_working_luks()
with iotests.FilePath('t.qcow2') as disk_path, \
iotests.FilePath('t.qcow2.base') as backing_path, \
iotests.VM() as vm:
vm.add_object('secret,id=keysec0,data=foo')
#
# Successful image creation (defaults)
#
iotests.log("=== Successful image creation (defaults) ===")
iotests.log("")
size = 128 * 1024 * 1024
vm.launch()
vm.blockdev_create({ 'driver': 'file',
'filename': disk_path,
'size': 0 })
vm.qmp_log('blockdev-add',
filters=[iotests.filter_qmp_testfiles],
driver='file', filename=disk_path,
node_name='imgfile')
vm.blockdev_create({ 'driver': imgfmt,
'file': 'imgfile',
'size': size })
vm.shutdown()
iotests.img_info_log(disk_path)
#
# Successful image creation (inline blockdev-add, explicit defaults)
#
iotests.log("=== Successful image creation (inline blockdev-add, explicit defaults) ===")
iotests.log("")
# Choose a different size to show that we got a new image
size = 64 * 1024 * 1024
vm.launch()
vm.blockdev_create({ 'driver': 'file',
'filename': disk_path,
'size': 0,
'preallocation': 'off',
'nocow': False })
vm.blockdev_create({ 'driver': imgfmt,
'file': {
'driver': 'file',
'filename': disk_path,
},
'size': size,
'version': 'v3',
'cluster-size': 65536,
'preallocation': 'off',
'lazy-refcounts': False,
'refcount-bits': 16 })
vm.shutdown()
iotests.img_info_log(disk_path)
#
# Successful image creation (v3 non-default options)
#
iotests.log("=== Successful image creation (v3 non-default options) ===")
iotests.log("")
# Choose a different size to show that we got a new image
size = 32 * 1024 * 1024
vm.launch()
vm.blockdev_create({ 'driver': 'file',
'filename': disk_path,
'size': 0,
'preallocation': 'falloc',
'nocow': True })
vm.blockdev_create({ 'driver': imgfmt,
'file': {
'driver': 'file',
'filename': disk_path,
},
'size': size,
'version': 'v3',
'cluster-size': 2097152,
'preallocation': 'metadata',
'lazy-refcounts': True,
'refcount-bits': 1 })
vm.shutdown()
iotests.img_info_log(disk_path)
#
# Successful image creation (v2 non-default options)
#
iotests.log("=== Successful image creation (v2 non-default options) ===")
iotests.log("")
vm.launch()
vm.blockdev_create({ 'driver': 'file',
'filename': disk_path,
'size': 0 })
vm.blockdev_create({ 'driver': imgfmt,
'file': {
'driver': 'file',
'filename': disk_path,
},
'size': size,
'backing-file': backing_path,
'backing-fmt': 'qcow2',
'version': 'v2',
'cluster-size': 512 })
vm.shutdown()
iotests.img_info_log(disk_path)
#
# Successful image creation (encrypted)
#
iotests.log("=== Successful image creation (encrypted) ===")
iotests.log("")
vm.launch()
vm.blockdev_create({ 'driver': imgfmt,
'file': {
'driver': 'file',
'filename': disk_path,
},
'size': size,
'encrypt': {
'format': 'luks',
'key-secret': 'keysec0',
'cipher-alg': 'twofish-128',
'cipher-mode': 'ctr',
'ivgen-alg': 'plain64',
'ivgen-hash-alg': 'md5',
'hash-alg': 'sha1',
'iter-time': 10,
}})
vm.shutdown()
iotests.img_info_log(disk_path)
#
# Invalid BlockdevRef
#
iotests.log("=== Invalid BlockdevRef ===")
iotests.log("")
vm.launch()
vm.blockdev_create({ 'driver': imgfmt,
'file': "this doesn't exist",
'size': size })
vm.shutdown()
#
# Invalid sizes
#
iotests.log("=== Invalid sizes ===")
# TODO Negative image sizes aren't handled correctly, but this is a problem
# with QAPI's implementation of the 'size' type and affects other commands
# as well. Once this is fixed, we may want to add a test case here.
#
# 1. Misaligned image size
# 2. 2^64 - 512
# 3. 2^63 = 8 EB (qemu-img enforces image sizes less than this)
# 4. 2^63 - 512 (generally valid, but qcow2 can't handle images this size)
vm.add_blockdev('driver=file,filename=%s,node-name=node0' % (disk_path))
vm.launch()
for size in [ 1234, 18446744073709551104, 9223372036854775808,
9223372036854775296 ]:
vm.blockdev_create({ 'driver': imgfmt,
'file': 'node0',
'size': size })
vm.shutdown()
#
# Invalid version
#
iotests.log("=== Invalid version ===")
vm.launch()
vm.blockdev_create({ 'driver': imgfmt,
'file': 'node0',
'size': 67108864,
'version': 'v1' })
vm.blockdev_create({ 'driver': imgfmt,
'file': 'node0',
'size': 67108864,
'version': 'v2',
'lazy-refcounts': True })
vm.blockdev_create({ 'driver': imgfmt,
'file': 'node0',
'size': 67108864,
'version': 'v2',
'refcount-bits': 8 })
vm.shutdown()
#
# Invalid backing file options
#
iotests.log("=== Invalid backing file options ===")
vm.launch()
vm.blockdev_create({ 'driver': imgfmt,
'file': 'node0',
'size': 67108864,
'backing-file': '/dev/null',
'preallocation': 'full' })
vm.blockdev_create({ 'driver': imgfmt,
'file': 'node0',
'size': 67108864,
'backing-fmt': imgfmt })
vm.shutdown()
#
# Invalid cluster size
#
iotests.log("=== Invalid cluster size ===")
vm.launch()
for csize in [ 1234, 128, 4194304, 0 ]:
vm.blockdev_create({ 'driver': imgfmt,
'file': 'node0',
'size': 67108864,
'cluster-size': csize })
vm.blockdev_create({ 'driver': imgfmt,
'file': 'node0',
'size': 281474976710656,
'cluster-size': 512 })
vm.shutdown()
#
# Invalid refcount width
#
iotests.log("=== Invalid refcount width ===")
vm.launch()
for refcount_bits in [ 128, 0, 7 ]:
vm.blockdev_create({ 'driver': imgfmt,
'file': 'node0',
'size': 67108864,
'refcount-bits': refcount_bits })
vm.shutdown()
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