biod Daemon

Purpose

Handles client requests for files.

Syntax

/usr/sbin/biod NumberOfBiods

Description

The biod daemon runs on all NFS client systems. When a user on a client wants to read or write to a file on a server, the biod daemon sends this request to the server. The biod daemon is activated during system startup and runs continuously.

The NumberOfBiods parameter allows the user to specify the number of block I/O daemons to start. The user assigns the number of daemons based on the load the client can handle. Six to eight daemons can handle an average load. You must run at least one daemon for NFS to work.

To change the number of daemons started when using the System Resource Controller (SRC) commands, use the chnfs command. In general, to change the parameters of an SRC-controlled daemon, use the chssys command. For more information on SRC commands, see "Controlling NFS" in AIX Version 4.3 System Management Guide: Communications and Networks.

The biod daemons should be started and stopped with the following SRC commands:

startsrc -s biod

stopsrc -s biod

Examples

1. To start biod daemons using an src command, enter:

   startsrc -s biod

   In this example, the startsrc -s biod command starts the number of specified daemons.
2. To change the number of daemons running on your system, enter:

   chssys -s biod -a 6

   In this example, the chssys command changes the number of biod daemons running on your system to six.

Files

Related Information

The chnfs command, chssys command, mount command.

The mountd daemon, nfsd daemon.

How to Mount a File System Explicitly in AIX Version 4.3 System Management Guide: Communications and Networks.

Network File System (NFS) Overview for System Management in AIX Version 4.3 System Management Guide: Communications and Networks.

System Resource Controller Overview in AIX Version 4.3 System Management Guide: Operating System and Devices.

List of NFS Commands.