Package ganeti :: Module bdev :: Class FileStorage

[frames] | no frames]

Class FileStorage

source code

File device.

This class represents a file storage backend device.

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

Instance Methods

[hide private]

__init__(self, unique_id, children, size, params)
Initalizes a file device backend.

source code

Assemble(self)
Assemble the device.

source code

Shutdown(self)
Shutdown the device.

source code

Open(self, force=False)
Make the device ready for I/O.

source code

Close(self)
Notifies that the device will no longer be used for I/O.

source code

boolean

Remove(self)
Remove the file backing the block device.

source code

Rename(self, new_id)
Renames the file.

source code

Grow(self, amount, dryrun, backingstore)
Grow the file

source code

boolean

Attach(self)
Attach to an existing file.

source code

GetActualSize(self)
Return the actual disk size.

source code

Inherited from BlockDev: CombinedSyncStatus, GetSyncStatus, PauseResumeSync, SetInfo, SetSyncParams, __repr__

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __str__, __subclasshook__

Class Methods

[hide private]

bdev.FileStorage

Create(cls, unique_id, children, size, params, excl_stor)
Create a new file.

source code

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, unique_id, children, size, params)
(Constructor)

source code

Initalizes a file device backend.

Overrides: object.__init__

Assemble(self)

source code

Assemble the device.

Checks whether the file device exists, raises BlockDeviceError otherwise.

Overrides: BlockDev.Assemble

Shutdown(self)

source code

Shutdown the device.

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

Overrides: BlockDev.Shutdown

Open(self, force=False)

source code

Make the device ready for I/O.

This is a no-op for the file type.

Overrides: BlockDev.Open

Close(self)

source code

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

This is a no-op for the file type.

Overrides: BlockDev.Close

Remove(self)

source code

Remove the file backing the block device.

Returns: boolean: True if the removal was successful
Overrides: BlockDev.Remove

Rename(self, new_id)

source code

Renames the file.

Overrides: BlockDev.Rename

Grow(self, amount, dryrun, backingstore)

source code

Grow the file

Parameters:

amount - the amount (in mebibytes) to grow with

Overrides: BlockDev.Grow

Attach(self)

source code

Attach to an existing file.

Check if this file already exists.

Returns: boolean: True if file exists
Overrides: BlockDev.Attach

GetActualSize(self)

source code

Return the actual disk size.

Overrides: BlockDev.GetActualSize

Note: the device needs to be active when this is called

Create(cls, unique_id, children, size, params, excl_stor)
Class Method

source code

Create a new file.

Parameters:

size - the size of file in MiB

Returns: bdev.FileStorage

an instance of FileStorage

Overrides: BlockDev.Create

Class FileStorage

__init__(self, unique_id, children, size, params) (Constructor)

Assemble(self)

Shutdown(self)

Open(self, force=False)

Close(self)

Remove(self)

Rename(self, new_id)

Grow(self, amount, dryrun, backingstore)

Attach(self)

GetActualSize(self)

Create(cls, unique_id, children, size, params, excl_stor) Class Method

init(self, unique_id, children, size, params)
(Constructor)

Create(cls, unique_id, children, size, params, excl_stor)
Class Method