A fix is available
APAR status
Closed as program error.
Error description
The lowest allowed RPC timeout on AIX NFS client (all NFS versions), is 5 seconds. This is a hardcoded lower limit. In the case of NFSv4, the nfs4cl command allows admins to incorrectly set values less than 5 seconds using the setfsoptions subcommand. A low value for timeouts, such as 1 second, causes frequent RPC timeouts in cases where the NFS server is very busy and IO calls take longer than 1 second. Problem does not happen when configuring the timeo option using mount command. This is an issue only when the "nfs4cl setfsoptions timeo=X" command is used.
Local fix
Do not set "timeo" option to less than 50 (5 seconds).
Problem summary
Frequent RPC Timeouts occur on the customr's system
Problem conclusion
In update_args(), add a check for upper and lower limit bounds for timeout values
Temporary fix
Comments
6100-08 - use AIX APAR IV70119 6100-09 - use AIX APAR IV63920 7100-02 - use AIX APAR IV60608 7100-03 - use AIX APAR IV63959
APAR Information
APAR number
IV63959
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2014-08-25
Closed date
2014-08-25
Last modified date
2015-09-30
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 U865826
UP15/05/19 I 1000
PTF to Fileset Mapping
U865826 bos.net.nfs.client 7.1.3.45
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Document Information
Modified date:
30 September 2015