How can I configure age of attribute cache in NFS client?

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • NFS client

Issue

  • How can I configure age of attribute cache in NFS client?

Resolution

  • You can configure the age by acregmin, acregmax, acdirmin, acdirmax, and actimeo.
  • These are documented in the nfs man page.

Root Cause

  • The followings are description from the NFS(5) man page.
       acregmin=n     The minimum time in seconds that attributes of a regular
                      file should be cached before requesting  fresh  informa-
                      tion from a server.  The default is 3 seconds.

       acregmax=n     The maximum time in seconds that attributes of a regular
                      file can be cached before requesting  fresh  information
                      from a server.  The default is 60 seconds.

       acdirmin=n     The  minimum time in seconds that attributes of a direc-
                      tory should be cached before requesting  fresh  informa-
                      tion from a server.  The default is 30 seconds.

       acdirmax=n     The  maximum time in seconds that attributes of a direc-
                      tory can be cached before requesting  fresh  information
                      from a server.  The default is 60 seconds.

       actimeo=n      Using  actimeo sets all of acregmin, acregmax, acdirmin,
                      and acdirmax to the same value.   There  is  no  default
                      value.

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