3.5.1 Matrix Server Administration Guide

Chapter 8: Configure MxFS-Linux 165

Following are some of the important parameters:

The following example shows an /etc/fstab entry for a hard mount on the

client system:

10.0.0.1:/share /mnt/share nfs hard,intr 0 0

The next example shows an /etc/fstab entry for a soft mount on the client

system:

10.0.0.1:/share /mnt/share nfs soft,timeo=7,retrans=4 0 0

Hard Mount Parameters:

intr Specify intr if users are not likely to damage critical data by

manually interrupting an NFS request. If a hard mount is

interruptible, a user can press Ctrl-C or issue the kill

command to interrupt an NFS mount that is hanging

indefinitely because a server is down.

nointr Specify nointr if users might damage critical data by

manually interrupting an NFS request, and you would

rather have the system hang while the server is down than

risk losing data between the client and the server.

Soft Mount Parameters:

timeo The timeout, in tenths of a second, for NFS requests. The

maximum value for timeo is 30 (3 seconds) and the default

value is 7 (0.7 seconds). Try doubling the timeo value if you

see several “servers not responding” messages within a few

minutes. This can occur because you are mounting

directories across a gateway, because your server is slow, or

because your network is busy with heavy traffic.

retrans The number of times an NFS request is retransmitted after it

times out. If the request does not succeed after the specified

number of retransmissions, an error is returned. The default

value is 4. 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 that the soft mount does not return an error.