A fix is available
APAR status
Closed as program error.
Error description
When several blocking lock requests are made from the same process and the same client in parallel (such as in a multi- threaded process environment), depending on the timing, it is possible that some lock requests receive a "NLM4_BLOCKED" response (even though the lock could have been granted) and have to wait for up to 60 sec before a retry is attempted.
Local fix
None. The lock requests will be retried after 60 sec automatically by the client side code.
Problem summary
From an NFS client, when several blocking file lock requests are made from the same process and the same client in parallel (such as in a multi-threaded process environment), depending on the timing, it is possible that some lock requests receive a "NLM4_BLOCKED" response (even though the lock could have been granted) and have to wait for up to 60 sec before a retry is attempted.
Problem conclusion
Modified NFS server code to properly handle the blocking file lock requests.
Temporary fix
Comments
5300-10 - use AIX APAR IZ91017 5300-11 - use AIX APAR IZ91093 5300-12 - use AIX APAR IZ91096 6100-03 - use AIX APAR IZ93967 6100-04 - use AIX APAR IZ93968 6100-05 - use AIX APAR IZ93361 6100-06 - use AIX APAR IZ93081 6100-06 - use AIX APAR IZ86900 7100-00 - use AIX APAR IZ87075
APAR Information
APAR number
IZ93967
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2011-01-31
Closed date
2011-01-31
Last modified date
2013-04-17
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 610 STD EDI
Fixed component ID
5765G6200
Applicable component levels
R610 PSY U838075
UP11/03/22 I 1000
PTF to Fileset Mapping
U838075 bos.net.nfs.client 6.1.3.8
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Document Information
Modified date:
17 April 2013