NFS Services Administrator's Guide

Configuring and Administering NFS
Configuring and Administering an NFS Client
Chapter 250
retrans=n
(default=5)
The number of times an NFS request (a read or
write request to a mounted directory) is
retransmitted after it times out. If the request
does not succeed after n retransmissions, a soft
mount returns an error, and a hard mount retries
the request.
Increase the retrans value for a directory that is
soft-mounted from a server that has frequent,
short periods of down time. This gives the server
sufficient time to recover, so the soft mount does
not return an error.
retry=n
(default=1)
The number of times the NFS client attempts to
mount a directory after the first attempt fails. If
you specify intr, you can interrupt the mount
before n retries. However, if you specify nointr,
you must wait until n retries have been made,
until the mount succeeds, or until you reboot the
system.
If mounts are failing because your server is very
busy, increasing the retry value may fix the
problem.
rsize=n
(default=32768)
The number of bytes the NFS client requests from
the NFS server in a single read request.
If packets are being dropped between the client
and the server, decrease rsize to 4096 or 2048. To
find out whether packets are being dropped, issue
the NFSstat -rc command at the HP-UX prompt.
If the timeout and retrans values returned by
this command are high, but the badxid number is
close to zero, then packets are being dropped
somewhere in the network.
Table 2-2 NFS Mount Options (Continued)