The cinder.volume.drivers.sheepdog Module¶

SheepDog Volume Driver.

class SheepdogClient(node_list, port)¶

Bases: object

Sheepdog command executor.

DOG_RESP_CLUSTER_NOT_FORMATTED = ‘Cluster status: Waiting for cluster to be formatted’¶

DOG_RESP_CLUSTER_RUNNING = ‘Cluster status: running’¶

DOG_RESP_CLUSTER_WAITING = ‘Cluster status: Waiting for other nodes to join cluster’¶

DOG_RESP_CONNECTION_ERROR = ‘failed to connect to’¶

DOG_RESP_SNAPSHOT_EXISTED = ‘tag (%(snapname)s) is existed’¶

DOG_RESP_SNAPSHOT_NOT_FOUND = ‘: Failed to find requested tag’¶

DOG_RESP_SNAPSHOT_VDI_NOT_FOUND = ‘: No VDI found’¶

DOG_RESP_VDI_ALREADY_EXISTS = ‘: VDI exists already’¶

DOG_RESP_VDI_NOT_FOUND = ‘: No VDI found’¶

DOG_RESP_VDI_SHRINK_NOT_SUPPORT = ‘Shrinking VDIs is not implemented’¶

DOG_RESP_VDI_SIZE_TOO_LARGE = ‘New VDI size is too large’¶

QEMU_IMG_RESP_ALREADY_EXISTS = ‘: VDI exists already’¶

QEMU_IMG_RESP_CONNECTION_ERROR = ‘Failed to connect socket: Connection refused’¶

QEMU_IMG_RESP_SIZE_TOO_LARGE = ‘An image is too large.’¶

QEMU_IMG_RESP_SNAPSHOT_NOT_FOUND = ‘Failed to find the requested tag’¶

QEMU_IMG_RESP_VDI_NOT_FOUND = ‘No vdi found’¶

QEMU_SHEEPDOG_PREFIX = ‘sheepdog:’¶

check_cluster_status()¶

clone(src_vdiname, src_snapname, dst_vdiname, size)¶

create(vdiname, size)¶

create_snapshot(vdiname, snapname)¶

delete(vdiname)¶

delete_snapshot(vdiname, snapname)¶

get_addr()¶

Get a random node in sheepdog cluster.

get_vdi_info(vdiname)¶

get_volume_stats()¶

local_path(volume)¶

Return a sheepdog location path.

resize(vdiname, size)¶

update_node_list()¶

class SheepdogDriver(*args, **kwargs)¶

Bases: cinder.volume.driver.VolumeDriver

Executes commands relating to Sheepdog Volumes.

CI_WIKI_NAME = ‘Cinder_Jenkins’¶

VERSION = ‘1.0.0’¶

check_for_setup_error()¶

Check cluster status and update node list.

clone_image(context, volume, image_location, image_meta, image_service)¶

Create a volume efficiently from an existing image.

copy_image_to_volume(context, volume, image_service, image_id)¶

copy_volume_to_image(context, volume, image_service, image_meta)¶

Copy the volume to the specified image.

create_cloned_volume(volume, src_vref)¶

Clone a sheepdog volume from another volume.

create_export(context, volume, connector)¶

Export a volume.

create_snapshot(snapshot)¶

Create a sheepdog snapshot.

create_volume(volume)¶

Create a sheepdog volume.

create_volume_from_snapshot(volume, snapshot)¶

Create a sheepdog volume from a snapshot.

delete_snapshot(snapshot)¶

Delete a sheepdog snapshot.

delete_volume(volume)¶

Delete a logical volume.

ensure_export(context, volume)¶

Safely and synchronously recreate an export for a logical volume.

extend_volume(volume, new_size)¶

Extend an Existing Volume.

get_volume_stats(refresh=False)¶

initialize_connection(volume, connector)¶

remove_export(context, volume)¶

Remove an export for a logical volume.

terminate_connection(volume, connector, **kwargs)¶

class SheepdogIOWrapper(addr, port, volume, snapshot_name=None)¶

Bases: io.RawIOBase

File-like object with Sheepdog backend.

fileno()¶

Sheepdog does not have support for fileno so we raise IOError.

Raising IOError is recommended way to notify caller that interface is not supported - see http://docs.python.org/2/library/io.html#io.IOBase

flush()¶

read(length=None)¶

seek(offset, whence=0)¶

tell()¶

write(data)¶