1fe1f66428
Add ability to use LVM volumes for VM disks. Implements LVM disks support for libvirt driver. VM disks will be stored on LVM volumes in volume group specified by `libvirt_images_volume_group` option. Another option `libvirt_local_images_type` specify which storage type will be used. Supported values are `raw`, `lvm`, `qcow2`, `default`. If `libvirt_local_images_type` = `default`, usual logic with `use_cow_images` flag is used. Boolean option `libvirt_sparse_logical_volumes` controls which type of logical volumes will be created (sparsed with virtualsize or usual logical volumes with full space allocation). Default value for this option is `False`. Commit introduce three classes: `Raw`, `Qcow2` and `Lvm`. They contain image creation logic, that was stored in `LibvirtConnection._cache_image` and `libvirt_info` methods, that produce right `LibvirtGuestConfigDisk` configurations for libvirt. `Backend` class choose which image type to use. Change-Id: I0d01cb7d2fd67de2565b8d45d34f7846ad4112c2
49 lines
1.6 KiB
Python
49 lines
1.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 Grid Dynamics
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# 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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import os
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from nova.virt.libvirt import config
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from nova.virt.libvirt import imagebackend
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class Backend(object):
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def __init__(self, use_cow):
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pass
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def image(self, instance, name, suffix='', image_type=''):
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class FakeImage(imagebackend.Image):
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def __init__(self, instance, name, suffix=''):
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self.path = os.path.join(instance, name + suffix)
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def create_image(self, prepare_template, base,
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size, *args, **kwargs):
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pass
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def cache(self, fn, fname, size=None, *args, **kwargs):
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pass
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def libvirt_info(self, device_type):
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info = config.LibvirtConfigGuestDisk()
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info.source_type = 'file'
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info.source_device = device_type
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info.driver_format = 'raw'
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info.source_path = self.path
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return info
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return FakeImage(instance, name, suffix)
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