ganeti.storage.filestorage.FileStorage

class documentation

class FileStorage(base.BlockDev):

View In Hierarchy

File device.

This class represents a file storage backend device.

The unique_id for the file device is a (file_driver, file_path) tuple.

Class Method Create Create a new file.
Method __init__ Initalizes a file device backend.
Method Assemble Assemble the device.
Method Attach Attach to an existing file.
Method Close Notifies that the device will no longer be used for I/O.
Method GetActualSize Return the actual disk size.
Method Grow Grow the file
Method Open Make the device ready for I/O.
Method Remove Remove the file backing the block device.
Method Rename Renames the file.
Method Shutdown Shutdown the device.
Instance Variable attached Undocumented
Instance Variable dev_path Undocumented
Instance Variable driver Undocumented
Instance Variable file Undocumented

Inherited from BlockDev:

Method __eq__ Undocumented
Method __repr__ Undocumented
Method CombinedSyncStatus Calculate the mirror status recursively for our children.
Method Export Builds the shell command for exporting data from device.
Method GetActualDimensions Return the actual disk size and number of spindles used.
Method GetActualSpindles Return the actual number of spindles used.
Method GetSyncStatus Returns the sync status of the device.
Method GetUserspaceAccessUri Return URIs hypervisors can use to access disks in userspace mode.
Method Import Builds the shell command for importing data to device.
Method PauseResumeSync Pause/Resume the sync of the mirror.
Method SetInfo Update metadata with info text.
Method SetSyncParams Adjust the synchronization parameters of the mirror.
Method Snapshot Creates a snapshot of the block device.
Instance Variable dyn_params Undocumented
Instance Variable major Undocumented
Instance Variable minor Undocumented
Instance Variable params Undocumented
Instance Variable size Undocumented
Instance Variable unique_id Undocumented
Instance Variable _children Undocumented
@classmethod
def Create(cls, unique_id, children, size, spindles, params, excl_stor, dyn_params, **kwargs):
overrides ganeti.storage.base.BlockDev.Create

Create a new file.

Parameters
unique_idUndocumented
childrenUndocumented
size:intthe size of file in MiB
spindlesUndocumented
paramsUndocumented
excl_storUndocumented
dyn_paramsUndocumented
**kwargsUndocumented
Returns
bdev.FileStoragean instance of FileStorage
def __init__(self, unique_id, children, size, params, dyn_params, **kwargs):
overrides ganeti.storage.base.BlockDev.__init__

Initalizes a file device backend.

def Assemble(self):
overrides ganeti.storage.base.BlockDev.Assemble

Assemble the device.

Checks whether the file device exists, raises BlockDeviceError otherwise.

def Attach(self, **kwargs):
overrides ganeti.storage.base.BlockDev.Attach

Attach to an existing file.

Check if this file already exists.

Returns
booleanTrue if file exists
def Close(self):
overrides ganeti.storage.base.BlockDev.Close

Notifies that the device will no longer be used for I/O.

This is a no-op for the file type.

def GetActualSize(self):
overrides ganeti.storage.base.BlockDev.GetActualSize

Return the actual disk size.

Note
the device needs to be active when this is called
def Grow(self, amount, dryrun, backingstore, excl_stor):
overrides ganeti.storage.base.BlockDev.Grow

Grow the file

Parameters
amountthe amount (in mebibytes) to grow with
dryrunUndocumented
backingstoreUndocumented
excl_storUndocumented
def Open(self, force=False, exclusive=True):
overrides ganeti.storage.base.BlockDev.Open

Make the device ready for I/O.

This is a no-op for the file type.

def Remove(self):
overrides ganeti.storage.base.BlockDev.Remove

Remove the file backing the block device.

Returns
booleanTrue if the removal was successful
def Rename(self, new_id):
overrides ganeti.storage.base.BlockDev.Rename

Renames the file.

def Shutdown(self):
overrides ganeti.storage.base.BlockDev.Shutdown

Shutdown the device.

This is a no-op for the file type, as we don't deactivate the file on shutdown.

attached =
overrides ganeti.storage.base.BlockDev.attached

Undocumented

dev_path =
overrides ganeti.storage.base.BlockDev.dev_path

Undocumented

driver =

Undocumented

file =

Undocumented