A fix is available
APAR status
Closed as program error.
Error description
AIX NFSv4 client with z/OS as the NFSv4 server. When the NFSv4 server returns NFS4ERR_FHEXPIRED error the AIX client could get in to an endless loop trying to recover from the FHEXPIRED error. Customer will see the n4bg threads taking up CPU on the AIX system, and could also see performance problems on the z/OS server, due to the heavy traffic from the AIX client.
Local fix
None. Reboot AIX client to overcome the error.
Problem summary
Performance issues on the z/OS nfsv4 server and high cpu usage on the AIX nfsv4 client
Problem conclusion
Propagate the NFS4ERR_ACCES error back to caller nfs4write()
Temporary fix
Comments
APAR Information
APAR number
IV47690
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2013-08-29
Closed date
2013-08-29
Last modified date
2014-02-14
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
AIX V7.1
Fixed component ID
5765H4000
Applicable component levels
R710 PSY U853812
UP13/11/22 I 1000
PTF to Fileset Mapping
U853812 bos.net.nfs.client 7.1.3.0
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Document Information
Modified date:
14 February 2014