The cinder.volume.drivers.vmware.vmdk Module

Driver for virtual machines running on VMware supported datastores.

class VMwareEsxVmdkDriver(*args, **kwargs)

Bases: cinder.volume.driver.VolumeDriver

Manage volumes on VMware ESX server.

VERSION = '1.0'

check_for_setup_error()

copy_image_to_volume(context, volume, image_service, image_id)

Creates volume from image.

Creates a backing for the volume under the ESX/VC server and copies the VMDK flat file from the glance image content. The method supports only image with VMDK disk format.

Parameters:

• context – context
• volume – Volume object
• image_service – Glance image service
• image_id – Glance image id

copy_volume_to_image(context, volume, image_service, image_meta)

Creates glance image from volume.

Upload of only available volume is supported. Steps followed are:

1. Get the name of the vmdk file which the volume points to right now. Can be a chain of snapshots, so we need to know the last in the chain.
2. Call CopyVirtualDisk which coalesces the disk chain to form a single vmdk, rather a .vmdk metadata file and a -flat.vmdk disk data file.
3. Now upload the -flat.vmdk file to the image store.
4. Delete the coalesced .vmdk and -flat.vmdk created.

create_cloned_volume(volume, src_vref)

Creates volume clone.

Parameters:

• volume – New Volume object
• src_vref – Volume object that must be cloned

create_export(context, volume)

create_snapshot(snapshot)

Creates a snapshot.

Parameters:snapshot – Snapshot object

create_volume(volume)

Creates a volume.

We do not create any backing. We do it only for the first time it is being attached to a virtual machine.

Parameters:volume – Volume object

create_volume_from_snapshot(volume, snapshot)

Creates a volume from a snapshot.

Parameters:

• volume – Volume object
• snapshot – Snapshot object

delete_snapshot(snapshot)

Delete snapshot.

Parameters:snapshot – Snapshot object

delete_volume(volume)

Deletes volume backing.

Parameters:volume – Volume object

do_setup(context)

Perform validations and establish connection to server.

Parameters:context – Context information

ensure_export(context, volume)

get_volume_stats(refresh=False)

Obtain status of the volume service.

Parameters:refresh – Whether to get refreshed information

initialize_connection(volume, connector)

Allow connection to connector and return connection info.

The implementation returns the following information: {‘driver_volume_type’: ‘vmdk’

‘data’: {‘volume’: $VOLUME_MOREF_VALUE

‘volume_id’: $VOLUME_ID

}

}

Parameters:

• volume – Volume object
• connector – Connector information

Returns:

Return connection information

remove_export(context, volume)

session

terminate_connection(volume, connector, force=False, **kwargs)

volumeops

class VMwareVcVmdkDriver(*args, **kwargs)

Bases: cinder.volume.drivers.vmware.vmdk.VMwareEsxVmdkDriver

Manage volumes on VMware VC server.

create_cloned_volume(volume, src_vref)

Creates volume clone.

Parameters:

• volume – New Volume object
• src_vref – Source Volume object

create_volume_from_snapshot(volume, snapshot)

Creates a volume from a snapshot.

Parameters:

• volume – New Volume object
• snapshot – Reference to snapshot entity