nfs:nfs3_cots_timeo

Description

Controls the default RPC timeout for NFS version 3 mounted file systems using connection oriented transports such as TCP for the transport protocol.

Data Type

Signed integer (32–bit)

Default

600 (60 seconds)

Range

0 to 2³¹ - 1

Units

10th of seconds

Dynamic?

Yes, but the RPC timeout for a file system is set when the file system is mounted. To affect a particular file system, unmount and mount the file system after changing this parameter.

Validation

None

When to Change

TCP does a good job ensuring requests and responses are delivered appropriately. However, if the round-trip times are very large in a particularly slow network, the NFS version 3 client might time out prematurely. Increase this parameter to prevent the client from timing out incorrectly. The range of values is very large, so increasing this value to be too large might result in real situations where a retransmission was required to not be detected for long periods of time.

Stability Level

Evolving