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