mcvirt.virtual_machine.hard_drive package¶

Submodules¶

mcvirt.virtual_machine.hard_drive.base module¶

Provide base operations to manage all hard drives, used by VMs

class mcvirt.virtual_machine.hard_drive.base.Base(vm_object, disk_id=None, driver=None)[source]¶

Bases: mcvirt.rpc.pyro_object.PyroObject

Provides base operations to manage all hard drives, used by VMs

DEFAULT_DRIVER¶

MAXIMUM_DEVICES = 1¶

SNAPSHOT_SIZE = '500M'¶

SNAPSHOT_SUFFIX = '_snapshot'¶

activateDisk()[source]¶: Activates the storage volume

activateLogicalVolume(*args, **kwargs)¶

addToVirtualMachine(*args, **kwargs)¶

clone(destination_vm_object)[source]¶: Clone a VM, using snapshotting, attaching it to the new VM object

config_properties¶: Return the disk object config items

create()[source]¶: Creates a new disk image, attaches the disk to the VM and records the disk in the VM configuration

createBackupSnapshot()[source]¶: Creates a snapshot of the logical volume for backing up and locks the VM

createLogicalVolume(*args, **kwargs)¶

deactivateDisk()[source]¶: Deactivates the storage volume

delete()[source]¶: Delete the logical volume for the disk

deleteBackupSnapshot()[source]¶: Deletes the backup snapshot for the disk and unlocks the VM

disk_id¶: Return the disk ID of the current disk, generating a new one if there is not already one present

driver¶: Return the disk drive driver name

duplicate(destination_vm_object)[source]¶: Clone the hard drive and attach it to the new VM object

getDiskConfig()[source]¶: Returns the disk configuration for the hard drive

getDiskPath()[source]¶: Exposed method for _getDiskPath

getSize()[source]¶: Gets the size of the disk (in MB)

get_remote_object(node_name=None, remote_node=None, registered=True)[source]¶: Obtain an instance of the current hard drive object on a remote node

get_type()[source]¶: Return the type of storage for the hard drive

increaseSize(*args, **kwargs)¶

static isAvailable(pyro_object)[source]¶: Returns whether the storage type is available on the node

move(destination_node, source_node)[source]¶: Moves the storage to another node in the cluster

postOnlineMigration()[source]¶: Performs post tasks after a VM has performed an online migration

preMigrationChecks(destination_node)[source]¶: Determines if the disk is in a state to allow the attached VM to be migrated to another node

preOnlineMigration()[source]¶: Performs required tasks in order for the underlying VM to perform an online migration

removeFromVirtualMachine(*args, **kwargs)¶

removeLogicalVolume(*args, **kwargs)¶

zeroLogicalVolume(*args, **kwargs)¶

mcvirt.virtual_machine.hard_drive.drbd module¶

class mcvirt.virtual_machine.hard_drive.drbd.Drbd(drbd_minor=None, drbd_port=None, *args, **kwargs)[source]¶

Bases: mcvirt.virtual_machine.hard_drive.base.Base

Provides operations to manage Drbd-backed hard drives, used by VMs

CACHE_MODE = 'none'¶

CREATE_PROGRESS¶

Drbd_CONFIG_TEMPLATE = '/usr/lib/mcvirt/templates/drbd_resource.conf'¶

Drbd_META_SUFFIX = 'meta'¶

Drbd_RAW_SUFFIX = 'raw'¶

Drbd_STATES = {'CONNECTION': {'CONNECTED': [<Mock id='140218819339792'>, <Mock id='140218831801808'>, <Mock id='140218822557008'>, <Mock id='140218822705040'>, <Mock id='140218821472720'>, <Mock id='140218816840976'>, <Mock id='140218816939152'>, <Mock id='140218814241424'>, <Mock id='140218817195088'>, <Mock id='140218823155536'>], 'WARNING': [<Mock id='140218823318096'>, <Mock id='140218823075088'>, <Mock id='140218823079888'>, <Mock id='140218823109264'>, <Mock id='140218823085392'>, <Mock id='140218819866704'>, <Mock id='140218819859216'>], 'OK': [<Mock id='140218828977104'>, <Mock id='140218819906320'>, <Mock id='140218828842256'>, <Mock id='140218825534864'>, <Mock id='140218825923408'>, <Mock id='140218820569744'>, <Mock id='140218829137360'>, <Mock id='140218820744976'>, <Mock id='140218819806800'>]}, 'DISK': {'WARNING': [<Mock id='140218819873616'>, <Mock id='140218819866128'>], 'OK': [<Mock id='140218819881104'>]}, 'ROLE': {'WARNING': [], 'OK': [<Mock id='140218819888592'>]}}¶

INITIAL_MINOR = 1¶

INITIAL_PORT = 7789¶

activateDisk()[source]¶: Ensure that the disk is ready to be used by a VM on the local node

config_properties¶: Return the disk object config items

create(size)[source]¶: Creates a new hard drive, attaches the disk to the VM and records the disk in the VM configuration

deactivateDisk()[source]¶: Marks Drbd volume as secondary

drbdConnect(*args, **kwargs)¶

drbdDisconnect(*args, **kwargs)¶

drbdDown(*args, **kwargs)¶

drbdGetConnectionState()[source]¶: Provide an exposed method for _drbdGetConnectionState

drbdGetDiskState()[source]¶: Provide an exposed method for drbdGetDiskState

drbdSetPrimary(*args, **kwargs)¶

drbdSetSecondary(*args, **kwargs)¶

drbdUp(*args, **kwargs)¶

drbd_minor¶: Returns the Drbd port assigned to the hard drive

drbd_port¶: Returns the Drbd port assigned to the hard drive

generateDrbdConfig(*args, **kwargs)¶

getSize()[source]¶: Gets the size of the disk (in MB)

initialiseMetaData(*args, **kwargs)¶

static isAvailable(pyro_object)[source]¶: Determine if Drbd is available on the node

move(destination_node, source_node)[source]¶: Replaces a remote node for the Drbd volume with a new node and syncs the data

postOnlineMigration()[source]¶: Performs post tasks after a VM has performed an online migration

preMigrationChecks()[source]¶: Ensures that the Drbd state of the disk is in a state suitable for migration

preOnlineMigration(destination_node)[source]¶: Performs required tasks in order for the underlying VM to perform an online migration

removeDrbdConfig(*args, **kwargs)¶

resource_name¶: Returns the Drbd resource name for the hard drive object

setSyncState(*args, **kwargs)¶

setTwoPrimariesConfig(*args, **kwargs)¶

verify()[source]¶: Performs a verification of a Drbd hard drive

mcvirt.virtual_machine.hard_drive.factory module¶

class mcvirt.virtual_machine.hard_drive.factory.Factory[source]¶

Bases: mcvirt.rpc.pyro_object.PyroObject

Provides a factory for creating hard drive/hard drive config objects

DEFAULT_STORAGE_TYPE = 'Local'¶

HARD_DRIVE_CLASS¶: alias of Base

OBJECT_TYPE = 'hard disk'¶

STORAGE_TYPES = [<class 'mcvirt.virtual_machine.hard_drive.local.Local'>, <class 'mcvirt.virtual_machine.hard_drive.drbd.Drbd'>]¶

create(*args, **kwargs)¶

getClass(storage_type)[source]¶: Obtains the hard drive class for a given storage type

getDrbdObjectByResourceName(resource_name)[source]¶: Obtains a hard drive object for a Drbd drive, based on the resource name

getObject(vm_object, disk_id, **config)[source]¶: Returns the storage object for a given disk

getStorageTypes()[source]¶: Returns the available storage types that MCVirt provides

mcvirt.virtual_machine.hard_drive.local module¶

class mcvirt.virtual_machine.hard_drive.local.Local(*args, **kwargs)[source]¶