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rtslib
Package rtslib :: Module loop :: Class Nexus
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Class Nexus

  object --+    
           |    
node.CFSNode --+
               |
              Nexus

This is a an interface to Target Portal Groups in configFS. A Nexus is identified by its parent Target object and its nexus Tag. To a Nexus object is attached a list of NetworkPortals.

Instance Methods [hide private]
 
__init__(self, parent_target, tag, mode='any')
Returns: A Nexus object.
 
__str__(self)
str(x)
 
_get_initiator(self)
 
_get_tag(self)
 
_get_parent_target(self)
 
_create_in_cfs_ine(self, mode)
Creates the configFS node if it does not already exists depending on the mode.
 
_list_luns(self)
 
_control(self, command)
 
_get_alua_metadata_path(self)
 
delete(self)
Recursively deletes a Nexus object.
 
lun(self, lun, storage_object=None, alias=None)
Same as LUN() but without specifying the parent_nexus.

Inherited from node.CFSNode: __nonzero__, get_attribute, get_parameter, list_attributes, list_parameters, set_attribute, set_parameter

Inherited from node.CFSNode (private): _check_self, _exists, _get_path, _is_fresh, _list_files

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

Class Variables [hide private]

Inherited from node.CFSNode: alua_metadata_dir, configfs_dir, spec_dir

Properties [hide private]
  alua_metadata_path
Get the ALUA metadata directory path for the Nexus.
  tag
Get the Nexus Tag as an int.
  initiator
Get the Nexus initiator address as a string.
  parent_target
Get the parent Target object to which the Nexus is attached.
  luns
Get the list of LUN objects currently attached to the Nexus.

Inherited from node.CFSNode: exists, is_fresh, path

Inherited from object: __class__

Method Details [hide private]

__init__(self, parent_target, tag, mode='any')
(Constructor)

 

x.__init__(...) initializes x; see help(type(x)) for signature

Parameters:
  • parent_target (Target) - The parent Target object of the Nexus.
  • tag (int > 0) - The Nexus Tag (TPGT).
  • mode (string) - An optionnal string containing the object creation mode:
    • 'any' means the configFS object will be either looked up or created.
    • 'lookup' means the object MUST already exist configFS.
    • 'create' means the object must NOT already exist in configFS.
Returns:
A Nexus object.
Overrides: object.__init__

__str__(self)
(Informal representation operator)

 

str(x)

Overrides: object.__str__
(inherited documentation)

_create_in_cfs_ine(self, mode)

 

Creates the configFS node if it does not already exists depending on the mode. any -> makes sure it exists, also works if the node already does exists lookup -> make sure it does NOT exists create -> create the node which must not exists beforehand Upon success (no exception raised), self._fresh is True if a node was created, else self._fresh is False.

Overrides: node.CFSNode._create_in_cfs_ine
(inherited documentation)

delete(self)

 

Recursively deletes a Nexus object. This will delete all attached LUN, and then the Nexus itself.

Overrides: node.CFSNode.delete

Property Details [hide private]

alua_metadata_path

Get the ALUA metadata directory path for the Nexus.

Get Method:
_get_alua_metadata_path(self)

tag

Get the Nexus Tag as an int.

Get Method:
_get_tag(self)

initiator

Get the Nexus initiator address as a string.

Get Method:
_get_initiator(self)

parent_target

Get the parent Target object to which the Nexus is attached.

Get Method:
_get_parent_target(self)

luns

Get the list of LUN objects currently attached to the Nexus.

Get Method:
_list_luns(self)

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