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diff --git a/rtslib/tcm.py b/rtslib/tcm.py
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index bf681fe..cb52386 100644
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--- a/rtslib/tcm.py
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+++ b/rtslib/tcm.py
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@@ -785,7 +785,8 @@ class UserBackedStorageObject(StorageObject):
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An interface to configFS storage objects for userspace-backed backstore.
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'''
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- def __init__(self, name, config=None, size=None, wwn=None):
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+ def __init__(self, name, config=None, size=None, wwn=None,
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+ hw_max_sectors=None):
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'''
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@param name: The name of the UserBackedStorageObject.
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@type name: string
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@@ -796,6 +797,8 @@ class UserBackedStorageObject(StorageObject):
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@type size: int
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@param wwn: T10 WWN Unit Serial, will generate if None
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@type wwn: string
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+ @hw_max_sectors: Max sectors per command limit to export to initiators.
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+ @type hw_max_sectors: int
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@return: A UserBackedStorageObject object.
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'''
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@@ -808,20 +811,22 @@ class UserBackedStorageObject(StorageObject):
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"from its configuration string")
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super(UserBackedStorageObject, self).__init__(name, 'create')
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try:
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- self._configure(config, size, wwn)
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+ self._configure(config, size, wwn, hw_max_sectors)
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except:
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self.delete()
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raise
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else:
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super(UserBackedStorageObject, self).__init__(name, 'lookup')
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- def _configure(self, config, size, wwn):
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+ def _configure(self, config, size, wwn, hw_max_sectors):
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self._check_self()
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if ':' in config:
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raise RTSLibError("':' not allowed in config string")
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self._control("dev_config=%s" % config)
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self._control("dev_size=%d" % size)
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+ if hw_max_sectors is not None:
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+ self._control("hw_max_sectors=%s" % hw_max_sectors)
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self._enable()
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super(UserBackedStorageObject, self)._configure(wwn)
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@@ -830,6 +835,10 @@ class UserBackedStorageObject(StorageObject):
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self._check_self()
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return int(self._parse_info('Size'))
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+ def _get_hw_max_sectors(self):
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+ self._check_self()
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+ return int(self._parse_info('HwMaxSectors'))
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+
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def _get_config(self):
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self._check_self()
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val = self._parse_info('Config')
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@@ -841,6 +850,8 @@ class UserBackedStorageObject(StorageObject):
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self._check_self()
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return storage_object_get_alua_support_attr(self)
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+ hw_max_sectors = property(_get_hw_max_sectors,
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+ doc="Get the max sectors per command.")
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size = property(_get_size,
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doc="Get the size in bytes.")
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config = property(_get_config,
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@@ -853,6 +864,8 @@ class UserBackedStorageObject(StorageObject):
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d['wwn'] = self.wwn
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d['size'] = self.size
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d['config'] = self.config
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+ d['hw_max_sectors'] = self.hw_max_sectors
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+
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return d
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