Home       Trees       Indices       Help   
Package rtslib :: Module tcm :: Class BlockStorageObject
[hide private]
[frames] | no frames]

Class BlockStorageObject

source code

  object --+        
           |        
node.CFSNode --+    
               |    
   StorageObject --+
                   |
                  BlockStorageObject

An interface to configFS storage objects for block backstore.

Instance Methods [hide private]
 
__init__(self, name, dev=None, wwn=None, readonly=False, write_back=False)
A BlockIOStorageObject can be instantiated in two ways:		 source code
 
_configure(self, dev, wwn, readonly, write_back) source code
 
_get_major(self) source code
 
_get_minor(self) source code
 
_get_size(self) source code
 
_get_wb_enabled(self) source code
 
_get_readonly(self) source code
 
dump(self) source code

Inherited from StorageObject: __eq__, __ne__, __repr__, delete, is_configured

Inherited from StorageObject (private): _config_pr_aptpl, _control, _enable, _gen_attached_luns, _get_name, _get_status, _get_udev_path, _get_version, _get_wwn, _list_attached_luns, _parse_info, _set_udev_path, _set_wwn, _write_fd

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

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

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

Class Methods [hide private]

Inherited from StorageObject: all, so_from_path

Class Variables [hide private]

Inherited from node.CFSNode: configfs_dir

Properties [hide private]
  major
Get the block device major number
  minor
Get the block device minor number
  size
Get the block device size
  write_back
True if write-back, False if write-through (write cache disabled)
  readonly
True if the device is read-only, False if read/write

Inherited from StorageObject: attached_luns, name, status, udev_path, version, wwn

Inherited from node.CFSNode: exists, path

Inherited from object: __class__

Method Details [hide private]

__init__(self, name, dev=None, wwn=None, readonly=False, write_back=False)
(Constructor)

source code 

A BlockIOStorageObject can be instantiated in two ways:

  • Creation mode: If dev is specified, the underlying configFS object will be created with that parameter. No BlockIOStorageObject with the same name can pre-exist in the parent Backstore in that mode.
  • Lookup mode: If dev is not set, then the BlockIOStorageObject will be bound to the existing configFS object in the parent Backstore having the specified name. The underlying configFS object must already exist in that mode, or instantiation will fail.
Parameters:
  • name (string) - The name of the BlockIOStorageObject.
  • dev (string) - The path to the backend block device to be used.
    • Example: dev="/dev/sda".
    • The only device type that is accepted TYPE_DISK. For other device types, use pscsi.
  • wwn (string) - T10 WWN Unit Serial, will generate if None
Returns:
A BlockIOStorageObject object.
Overrides: object.__init__

_configure(self, dev, wwn, readonly, write_back)

source code 
Overrides: StorageObject._configure

dump(self)

source code 
Overrides: node.CFSNode.dump

Property Details [hide private]

major

Get the block device major number

Get Method:
_get_major(self)

minor

Get the block device minor number

Get Method:
_get_minor(self)

size

Get the block device size

Get Method:
_get_size(self)

write_back

True if write-back, False if write-through (write cache disabled)

Get Method:
_get_wb_enabled(self)

readonly

True if the device is read-only, False if read/write

Get Method:
_get_readonly(self)

   Home       Trees       Indices       Help   
Generated by Epydoc 3.0.1 on Wed Apr 16 22:40:11 2014 http://epydoc.sourceforge.net