Package ganeti :: Package storage :: Module filestorage :: 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, dyn_params, *args)
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, exclusive=True)
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, excl_stor)
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 base.BlockDev: CombinedSyncStatus, Export, GetActualDimensions, GetActualSpindles, GetSyncStatus, GetUserspaceAccessUri, Import, PauseResumeSync, SetInfo, SetSyncParams, Snapshot, __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, spindles, params, excl_stor, dyn_params, *args)
Create a new file.

source code

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, unique_id, children, size, params, dyn_params, args)
(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: base.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: base.BlockDev.Shutdown

Open(self, force=False, exclusive=True)

source code

Make the device ready for I/O.

This is a no-op for the file type.

Overrides: base.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: base.BlockDev.Close

Remove(self)

source code

Remove the file backing the block device.

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

Rename(self, new_id)

source code

Renames the file.

Overrides: base.BlockDev.Rename

Grow(self, amount, dryrun, backingstore, excl_stor)

source code

Grow the file

Parameters:

amount - the amount (in mebibytes) to grow with

Overrides: base.BlockDev.Grow

Attach(self)

source code

Attach to an existing file.

Check if this file already exists.

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

GetActualSize(self)

source code

Return the actual disk size.

Overrides: base.BlockDev.GetActualSize

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

Create(cls, unique_id, children, size, spindles, params, excl_stor, dyn_params, args)
Class Method*

source code

Create a new file.

Parameters:

size (int) - the size of file in MiB

Returns: bdev.FileStorage

an instance of FileStorage

Overrides: base.BlockDev.Create

Class FileStorage

__init__(self, unique_id, children, size, params, dyn_params, *args) (Constructor)

Assemble(self)

Shutdown(self)

Open(self, force=False, exclusive=True)

Close(self)

Remove(self)

Rename(self, new_id)

Grow(self, amount, dryrun, backingstore, excl_stor)

Attach(self)

GetActualSize(self)

Create(cls, unique_id, children, size, spindles, params, excl_stor, dyn_params, *args) Class Method

init(self, unique_id, children, size, params, dyn_params, args)
(Constructor)*

Create(cls, unique_id, children, size, spindles, params, excl_stor, dyn_params, args)
Class Method*