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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (C) 2012 Yahoo! Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import os
from nova import test
from nova import utils
from nova.virt import images
from nova.virt.libvirt import utils as libvirt_utils
class ImageUtilsTestCase(test.TestCase):
def test_disk_type(self):
# Seems like lvm detection
# if its in /dev ??
for p in ['/dev/b', '/dev/blah/blah']:
d_type = libvirt_utils.get_disk_type(p)
self.assertEquals('lvm', d_type)
# Try the other types
template_output = """image: %(path)s
file format: %(format)s
virtual size: 64M (67108864 bytes)
cluster_size: 65536
disk size: 96K
"""
path = '/myhome/disk.config'
for f in ['raw', 'qcow2']:
output = template_output % ({
'format': f,
'path': path,
})
self.mox.StubOutWithMock(os.path, 'exists')
self.mox.StubOutWithMock(utils, 'execute')
os.path.exists(path).AndReturn(True)
utils.execute('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', path).AndReturn((output, ''))
self.mox.ReplayAll()
d_type = libvirt_utils.get_disk_type(path)
self.assertEquals(f, d_type)
self.mox.UnsetStubs()
def test_disk_backing(self):
path = '/myhome/disk.config'
template_output = """image: %(path)s
file format: raw
virtual size: 2K (2048 bytes)
cluster_size: 65536
disk size: 96K
"""
output = template_output % ({
'path': path,
})
self.mox.StubOutWithMock(os.path, 'exists')
self.mox.StubOutWithMock(utils, 'execute')
os.path.exists(path).AndReturn(True)
utils.execute('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', path).AndReturn((output, ''))
self.mox.ReplayAll()
d_backing = libvirt_utils.get_disk_backing_file(path)
self.assertEquals(None, d_backing)
def test_disk_size(self):
path = '/myhome/disk.config'
template_output = """image: %(path)s
file format: raw
virtual size: %(v_size)s (%(vsize_b)s bytes)
cluster_size: 65536
disk size: 96K
"""
for i in range(0, 128):
bytes = i * 65336
kbytes = bytes / 1024
mbytes = kbytes / 1024
output = template_output % ({
'v_size': "%sM" % (mbytes),
'vsize_b': i,
'path': path,
})
self.mox.StubOutWithMock(os.path, 'exists')
self.mox.StubOutWithMock(utils, 'execute')
os.path.exists(path).AndReturn(True)
utils.execute('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', path).AndReturn((output, ''))
self.mox.ReplayAll()
d_size = libvirt_utils.get_disk_size(path)
self.assertEquals(i, d_size)
self.mox.UnsetStubs()
output = template_output % ({
'v_size': "%sK" % (kbytes),
'vsize_b': i,
'path': path,
})
self.mox.StubOutWithMock(os.path, 'exists')
self.mox.StubOutWithMock(utils, 'execute')
os.path.exists(path).AndReturn(True)
utils.execute('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', path).AndReturn((output, ''))
self.mox.ReplayAll()
d_size = libvirt_utils.get_disk_size(path)
self.assertEquals(i, d_size)
self.mox.UnsetStubs()
def test_qemu_info_canon(self):
path = "disk.config"
example_output = """image: disk.config
file format: raw
virtual size: 64M (67108864 bytes)
cluster_size: 65536
disk size: 96K
blah BLAH: bb
"""
self.mox.StubOutWithMock(os.path, 'exists')
self.mox.StubOutWithMock(utils, 'execute')
os.path.exists(path).AndReturn(True)
utils.execute('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', path).AndReturn((example_output, ''))
self.mox.ReplayAll()
image_info = images.qemu_img_info(path)
self.assertEquals('disk.config', image_info.image)
self.assertEquals('raw', image_info.file_format)
self.assertEquals(67108864, image_info.virtual_size)
self.assertEquals(98304, image_info.disk_size)
self.assertEquals(65536, image_info.cluster_size)
def test_qemu_info_canon2(self):
path = "disk.config"
example_output = """image: disk.config
file format: QCOW2
virtual size: 67108844
cluster_size: 65536
disk size: 963434
backing file: /var/lib/nova/a328c7998805951a_2
"""
self.mox.StubOutWithMock(os.path, 'exists')
self.mox.StubOutWithMock(utils, 'execute')
os.path.exists(path).AndReturn(True)
utils.execute('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', path).AndReturn((example_output, ''))
self.mox.ReplayAll()
image_info = images.qemu_img_info(path)
self.assertEquals('disk.config', image_info.image)
self.assertEquals('qcow2', image_info.file_format)
self.assertEquals(67108844, image_info.virtual_size)
self.assertEquals(963434, image_info.disk_size)
self.assertEquals(65536, image_info.cluster_size)
self.assertEquals('/var/lib/nova/a328c7998805951a_2',
image_info.backing_file)
def test_qemu_backing_file_actual(self):
path = "disk.config"
example_output = """image: disk.config
file format: raw
virtual size: 64M (67108864 bytes)
cluster_size: 65536
disk size: 96K
Snapshot list:
ID TAG VM SIZE DATE VM CLOCK
1 d9a9784a500742a7bb95627bb3aace38 0 2012-08-20 10:52:46 00:00:00.000
backing file: /var/lib/nova/a328c7998805951a_2 (actual path: /b/3a988059e51a_2)
"""
self.mox.StubOutWithMock(os.path, 'exists')
self.mox.StubOutWithMock(utils, 'execute')
os.path.exists(path).AndReturn(True)
utils.execute('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', path).AndReturn((example_output, ''))
self.mox.ReplayAll()
image_info = images.qemu_img_info(path)
self.assertEquals('disk.config', image_info.image)
self.assertEquals('raw', image_info.file_format)
self.assertEquals(67108864, image_info.virtual_size)
self.assertEquals(98304, image_info.disk_size)
self.assertEquals(1, len(image_info.snapshots))
self.assertEquals('/b/3a988059e51a_2',
image_info.backing_file)
def test_qemu_info_convert(self):
path = "disk.config"
example_output = """image: disk.config
file format: raw
virtual size: 64M
disk size: 96K
Snapshot list:
ID TAG VM SIZE DATE VM CLOCK
1 d9a9784a500742a7bb95627bb3aace38 0 2012-08-20 10:52:46 00:00:00.000
3 d9a9784a500742a7bb95627bb3aace38 0 2012-08-20 10:52:46 00:00:00.000
4 d9a9784a500742a7bb95627bb3aace38 0 2012-08-20 10:52:46 00:00:00.000
junk stuff: bbb
"""
self.mox.StubOutWithMock(os.path, 'exists')
self.mox.StubOutWithMock(utils, 'execute')
os.path.exists(path).AndReturn(True)
utils.execute('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', path).AndReturn((example_output, ''))
self.mox.ReplayAll()
image_info = images.qemu_img_info(path)
self.assertEquals('disk.config', image_info.image)
self.assertEquals('raw', image_info.file_format)
self.assertEquals(67108864, image_info.virtual_size)
self.assertEquals(98304, image_info.disk_size)
def test_qemu_info_snaps(self):
path = "disk.config"
example_output = """image: disk.config
file format: raw
virtual size: 64M (67108864 bytes)
disk size: 96K
Snapshot list:
ID TAG VM SIZE DATE VM CLOCK
1 d9a9784a500742a7bb95627bb3aace38 0 2012-08-20 10:52:46 00:00:00.000
3 d9a9784a500742a7bb95627bb3aace38 0 2012-08-20 10:52:46 00:00:00.000
4 d9a9784a500742a7bb95627bb3aace38 0 2012-08-20 10:52:46 00:00:00.000
"""
self.mox.StubOutWithMock(os.path, 'exists')
self.mox.StubOutWithMock(utils, 'execute')
os.path.exists(path).AndReturn(True)
utils.execute('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', path).AndReturn((example_output, ''))
self.mox.ReplayAll()
image_info = images.qemu_img_info(path)
self.assertEquals('disk.config', image_info.image)
self.assertEquals('raw', image_info.file_format)
self.assertEquals(67108864, image_info.virtual_size)
self.assertEquals(98304, image_info.disk_size)
self.assertEquals(3, len(image_info.snapshots))
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