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Poor performance and service disruption on CIFS vFilers

Last Updated:

Applies to

  • Data ONTAP 8 (7-MODE)


  • Occasional prolonged period of slow performance leading to service disruption
  • Issue may self resolve without any admin intervention
  • Error messages around the time of poor performance
Fri Jan 29 11:47:59 UTC [vf10@ntapn1: CIFSDispatcher: cifs.stats.pBlkExhaust:info]: CIFS: All CIFS control blocks for 
the STANDARD pool are in use. The request for a new control block can not be granted.

Fri Jan 29 12:45:54 UTC [vf10@ntapn1: CIFSDispatcher: cifs.many.pending.auth.reqs:warning]: CIFS: Too many pending
authentication requests detected while authenticatinig for vFiler vfiler:vf10: Check health of all DCs for every vFiler
unit configured on the controller and verify their connectivity.


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