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Commands Reference, Volume 4
nfsd Daemon
Purpose
Services client requests for file system operations.
Syntax
/usr/sbin/nfsd [ -a | -p { tcp | udp } ] [ -c max_connections ] [ -w max_write_size ] [ -r max_read_size ] nservers
Description
The nfsd daemon runs on a server
and handles client requests for file system operations.
Each daemon handles one request at a time. Assign the
maximum number of threads based on the load you expect the server to handle.
The nfsd daemon is started and
stopped with the following System Resource Controller (SRC) commands:
startsrc -s nfsd
stopsrc -s nfsd
To change the number of daemons started with the SRC
commands, use the chnfs command. To change the parameters
of an SRC controlled daemon, use the chssys command.
Flags
-a |
Specifies UDP and TCP transport will be serviced. This flag only
applies to AIX 4.2.1 or later. |
-c max_connections |
Specifies the maximum number of TCP connections allowed at the NFS
server. This flag only applies to AIX 4.2.1 or later. |
nservers |
Specifies the maximum number of concurrent requests that the NFS
server can handle. This concurrency is achieved by the number of nservers thread created in the kernel as needed. This flag only applies
to AIX 4.2.1 or later. |
-p tcp
or -p udp |
Transports both UDP and TCP to the NFS clients (default). You can
only specify UDP or TCP. For example, if -p tcp is used, the NFS server only accepts NFS client requests using the
TCP protocol. This flag only applies to AIX 4.2.1 or later. |
-r max_read_size |
Specifies for NFS Version 3, the maximum size allowed for file read
requests. The default and maximum allowed is 32K. This flag only applies to AIX 4.2.1
or later. |
-w max_write_size |
Specifies for NFS Version 3, the maximum size allowed for file write
requests. The default and maximum allowed is 32K. This flag only applies to AIX 4.2.1
or later. |
Parameter
Parameter that can be changed:
NumberOfNfsds |
Specifies the number of daemons to start. This parameter does not
apply to AIX 4.2.1 or later. |
Examples
- To start nfsd daemons using
an src command, enter:
startsrc -s nfsd
In this example, the startsrc -s nfsd entry starts the number of daemons
specified in the script.
- To change the number of daemons running on your
system, enter:
chssys -s nfsd -a 6
In this example,
the chssys command changes the number of nfsd daemons running on your system to 6.
Related Information
The chnfs command, chssys
command.
The biod daemon, mountd
daemon.
Network File System (NFS)
Overview for System Management in AIX 5L Version 5.2 System Management Concepts: Operating System and Devices.
System Resource Controller
Overview in AIX 5L Version 5.2 System Management Guide: Operating System and Devices.
List of NFS Commands.
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