I have this problem when I want to add a new module..... someone know the cause?

Odoo Server Error

Traceback (most recent call last):
  File "/odoo/odoo-server/openerp/http.py", line 643, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/odoo/odoo-server/openerp/http.py", line 680, in dispatch
    result = self._call_function(**self.params)
  File "/odoo/odoo-server/openerp/http.py", line 316, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/odoo/odoo-server/openerp/service/model.py", line 118, in wrapper
    return f(dbname, *args, **kwargs)
  File "/odoo/odoo-server/openerp/http.py", line 309, in checked_call
    result = self.endpoint(*a, **kw)
  File "/odoo/odoo-server/openerp/http.py", line 959, in __call__
    return self.method(*args, **kw)
  File "/odoo/odoo-server/openerp/http.py", line 509, in response_wrap
    response = f(*args, **kw)
  File "/odoo/odoo-server/addons/web/controllers/main.py", line 896, in call_button
    action = self._call_kw(model, method, args, {})
  File "/odoo/odoo-server/addons/web/controllers/main.py", line 884, in _call_kw
    return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs)
  File "/odoo/odoo-server/openerp/api.py", line 250, in wrapper
    return old_api(self, *args, **kwargs)
  File "/odoo/odoo-server/openerp/addons/base/module/module.py", line 459, in button_immediate_install
    return self._button_immediate_function(cr, uid, ids, self.button_install, context=context)
  File "/odoo/odoo-server/openerp/api.py", line 250, in wrapper
    return old_api(self, *args, **kwargs)
  File "/odoo/odoo-server/openerp/addons/base/module/module.py", line 533, in _button_immediate_function
    registry = openerp.modules.registry.RegistryManager.new(cr.dbname, update_module=True)
  File "/odoo/odoo-server/openerp/modules/registry.py", line 386, in new
    openerp.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/odoo/odoo-server/openerp/modules/loading.py", line 338, in load_modules
    loaded_modules, update_module)
  File "/odoo/odoo-server/openerp/modules/loading.py", line 237, in load_marked_modules
    loaded, processed = load_module_graph(cr, graph, progressdict, report=report, skip_modules=loaded_modules, perform_checks=perform_checks)
  File "/odoo/odoo-server/openerp/modules/loading.py", line 137, in load_module_graph
    init_module_models(cr, package.name, models)
  File "/odoo/odoo-server/openerp/modules/module.py", line 293, in init_module_models
    result = obj._auto_init(cr, {'module': module_name})
  File "/odoo/odoo-server/openerp/api.py", line 250, in wrapper
    return old_api(self, *args, **kwargs)
  File "/odoo/odoo-server/openerp/models.py", line 2451, in _auto_init
    self._create_table(cr)
  File "/odoo/odoo-server/openerp/api.py", line 250, in wrapper
    return old_api(self, *args, **kwargs)
  File "/odoo/odoo-server/openerp/models.py", line 2722, in _create_table
    cr.execute('CREATE TABLE "%s" (id SERIAL NOT NULL, PRIMARY KEY(id))' % (self._table,))
  File "/odoo/odoo-server/openerp/sql_db.py", line 141, in wrapper
    return f(self, *args, **kwargs)
  File "/odoo/odoo-server/openerp/sql_db.py", line 220, in execute
    res = self._obj.execute(query, params)
OperationalError: could not fsync file "base/87567/100829": Error de entrada/salida