Which of the following actions should you take to solve the custom NFS settings from causing delays in the write operation?
Unmount and remount the file system with the noac option to disable attribute caching.
Reduce the number of active users that have files open simultaneously on the instances.
Verify that the IP address of the specified mount target is valid.
Run the write operation from a different user ID on the same Amazon EC2 instance.
Explanations:
Using thenoacoption disables attribute caching, which can help ensure that file operations are immediately visible to all instances. This setting prevents delays caused by cached data and ensures consistency across EC2 instances accessing the EFS.
Reducing the number of active users might lower contention but does not address the inherent delay caused by NFS caching settings. This action would not solve the problem directly related to visibility of write operations across instances.
Verifying the IP address of the mount target is essential for connectivity, but it does not affect the delay in write operations caused by caching settings. This option does not relate to the caching behavior that is causing the observed delay.
Running the write operation from a different user ID on the same EC2 instance does not resolve the caching issue. The delay in visibility is due to the NFS client’s caching behavior, not user ID permissions or identity.
I strategize that the answer is:
Unmount and remount the file system with the noac option to disable attribute caching.