Package ganeti :: Package storage :: Module bdev :: Class ExtStorageDevice

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Class ExtStorageDevice

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A block device provided by an ExtStorage Provider.

This class implements the External Storage Interface, which means handling of the externally provided block devices.

Instance Methods

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__init__(self, unique_id, children, size, params, dyn_params)
Attaches to an extstorage block device.

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Remove(self)
Remove the extstorage device.

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Rename(self, new_id)
Rename this device.

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Attach(self)
Attach to an existing extstorage device.

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Assemble(self)
Assemble the device.

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Shutdown(self)
Shutdown the device.

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

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

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Grow(self, amount, dryrun, backingstore, excl_stor)
Grow the Volume.

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SetInfo(self, text)
Update metadata with info text.

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Inherited from base.BlockDev: CombinedSyncStatus, GetActualDimensions, GetActualSize, GetActualSpindles, GetSyncStatus, GetUserspaceAccessUri, PauseResumeSync, SetSyncParams, __repr__

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

Class Methods

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BlockDev

Create(cls, unique_id, children, size, spindles, params, excl_stor, dyn_params)
Create a new extstorage device.

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Properties

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Inherited from object: __class__

Method Details

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

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Attaches to an extstorage block device.

Overrides: object.__init__

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

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Create a new extstorage device.

Provision a new volume using an extstorage provider, which will then be mapped to a block device.

Parameters:

unique_id - unique identifier; the details depend on the actual device type
children - for hierarchical devices, the child devices
size - size in MiB
spindles - number of physical disk to dedicate to the device
params - device-specific options/parameters
excl_stor - whether exclusive_storage is active
dyn_params - dynamic parameters of the disk only valid for this node. As set by objects.Disk.UpdateDynamicDiskParams.

Returns: BlockDev

the created device, or None in case of an error

Overrides: base.BlockDev.Create

Remove(self)

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Remove the extstorage device.

Overrides: base.BlockDev.Remove

Rename(self, new_id)

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Rename this device.

Overrides: base.BlockDev.Rename

Attach(self)

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Attach to an existing extstorage device.

This method maps the extstorage volume that matches our name with a corresponding block device and then attaches to this device.

Overrides: base.BlockDev.Attach

Assemble(self)

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Assemble the device.

Overrides: base.BlockDev.Assemble

Shutdown(self)

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Shutdown the device.

Overrides: base.BlockDev.Shutdown

Open(self, force=False)

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Make the device ready for I/O.

Overrides: base.BlockDev.Open

Close(self)

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

Overrides: base.BlockDev.Close

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

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Grow the Volume.

Parameters:

amount (integer) - the amount (in mebibytes) to grow with
dryrun (boolean) - whether to execute the operation in simulation mode only, without actually increasing the size

Overrides: base.BlockDev.Grow