NFS share on Linux client not immediately visible to other NFS clients

If you are using NFS as the shared file system, you may encounter this issue where NFS share on Linux client not immediately visible to other NFS clients. This is due to caching parameters which you must take note of on the NFS Client side. These are

1. acregmin=n. The minimum time (in seconds) that the NFS client caches attributes of a regular file before it requests fresh attribute information from a server. The default is 3 seconds.
2. acregmax=n. The maximum time (in seconds) that the NFS client caches attributes of a regular file before it requests fresh attribute information from a server. The default is 60.
3. acdirmin=n. The minimum time (in seconds) that the NFS client caches attributes of a directory before it requests fresh attribute information from a server. The default is 60
4. acdirmax=n. The maximum time (in seconds) that the NFS client caches attributes of a directory before it requests fresh attribute information from a server. The default is 60
5. actimeo=n. When you wish to sets all of acregmin, acregmax, acdirmin, and acdirmax to the same value.

For more information, see

1. Configuring NFS Client for Performance
2. Why are changes made on an NFS share on my Red Hat Enterprise Linux 5 client not immediately visible to other NFS clients?