Description of problem:

Osp 13 deployment (HCI) with large infra & 150 + ceph disks fails due to below reasons

[root@undercloud-0 ~]# grep -inr execution_field_size_limit_kb /etc/mistral/mistral.conf
12:execution_field_size_limit_kb=16384

Version-Release number of selected component (if applicable):


How reproducible:
every time

Steps to Reproduce:
1.
2.
3.

Actual results:

deployment fails at step2

Expected results:


Additional info:
below logs for more info

===

  ceph_base_ansible_workflow [task_ex_id=30f5063f-6164-41a8-a71d-f5002bb40419] -> Failed to complete action [error=Field size limit exceeded [class=TaskExecution, field=output, size=25288KB, limit=16384KB], action=tripleo.ansible-playbook, task=ceph_install]:
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/mistral/engine/action_handler.py", line 37, in on_action_complete
    action.complete(result)
  File "/usr/lib/python2.7/site-packages/osprofiler/profiler.py", line 158, in wrapper
    result = f(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/mistral/engine/actions.py", line 227, in complete
    self.action_ex.output = self._prepare_output(result).to_dict()
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/attributes.py", line 229, in __set__
    instance_dict(instance), value, None)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/attributes.py", line 708, in set
    value, old, initiator)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/attributes.py", line 715, in fire_replace_event
    state, value, previous, initiator or self._replace_token)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/events.py", line 1893, in wrap
    fn(target, *arg)
  File "/usr/lib/python2.7/site-packages/mistral/db/v2/sqlalchemy/models.py", line 94, in <lambda>
    lambda t, v, o, i: validate_long_type_length(cls, attr_name, v)
  File "/usr/lib/python2.7/site-packages/mistral/db/v2/sqlalchemy/models.py", line 80, in validate_long_type_length
    raise exc.SizeLimitExceededException(msg)
SizeLimitExceededException: Field size limit exceeded [class=TaskExecution, field=output, size=25288KB, limit=16384KB]

    [wf_ex_id=a1c90252-7cc7-41e5-9054-63523402c175, idx=0]: Failed to complete action [error=Field size limit exceeded [class=TaskExecution, field=output, size=25288KB, limit=16384KB], action=tripleo.ansible-playbook, task=ceph_install]:
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/mistral/engine/action_handler.py", line 37, in on_action_complete
    action.complete(result)
  File "/usr/lib/python2.7/site-packages/osprofiler/profiler.py", line 158, in wrapper
    result = f(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/mistral/engine/actions.py", line 227, in complete
    self.action_ex.output = self._prepare_output(result).to_dict()
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/attributes.py", line 229, in __set__
    instance_dict(instance), value, None)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/attributes.py", line 708, in set
    value, old, initiator)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/attributes.py", line 715, in fire_replace_event
    state, value, previous, initiator or self._replace_token)
  File "/usr/lib64/python2.7/site-packages/sqlalchemy/orm/events.py", line 1893, in wrap
    fn(target, *arg)
  File "/usr/lib/python2.7/site-packages/mistral/db/v2/sqlalchemy/models.py", line 94, in <lambda>
    lambda t, v, o, i: validate_long_type_length(cls, attr_name, v)
  File "/usr/lib/python2.7/site-packages/mistral/db/v2/sqlalchemy/models.py", line 80, in validate_long_type_length
    raise exc.SizeLimitExceededException(msg)
SizeLimitExceededException: Field size limit exceeded [class=TaskExecution, field=output, size=25288KB, limit=16384KB]

===