nfsd(1M)							      nfsd(1M)

NAME    [Toc]    [Back]

     nfsd, biod, bio3d - NFS daemons

SYNOPSIS    [Toc]    [Back]

     /usr/etc/nfsd [ -a	] [ -p proto ] [ -c nconns ] [ nservers	]
     /usr/etc/biod [ nclients ]

DESCRIPTION    [Toc]    [Back]

     nfsd starts the nfs(4) server daemons that	handle client NFS requests.

     biod starts asynchronous block I/O	daemons.  This command is used on a
     NFS client	to perform buffer cache	read-ahead and write-behind.

     bio3d processes are the asynchronous kernel processes for NFS version 3.
     No	daemon is necessary to start bio3ds.  There is one bio3d associated
     with each mounted filesystem at mount time.  If the NFS traffic to	a
     filesystem	increases, up to three more bio3d processes are	spawned	for
     that filesystem.  When traffic subsides, these extra processes exit.

OPTIONS    [Toc]    [Back]

     -a		 Allow the NFS server daemon to	service	client requests	over
		 both the UDP and TCP protocols.  This is the default.

     -p	proto	 Allow the NFS server daemon to	service	client requests	over
		 either	the UDP	or the TCP protocols.  The -a option overrides
		 this selection.

     -c	nconns	 Set an	upper limit on the number of simultaneous connections
		 the NFS server	has open.  By default this number is
		 unlimited.  nconns can	be equated with	the total number of
		 clients mounting files	from this server.

     nservers	 This is the number of NFS server daemons to start.  On	an
		 Origin	system,	one nfsd server	per CPU	maximizes efficiency
		 and performance.  Having too many daemons can be wasteful of
		 system	resources.  The	default	is the number of CPUs in the
		 system	or 4, whichever	is larger.

     nclients	 The number of asynchronous block I/O daemons.	A good number
		 for nclients is 4.  The default is 1.

     These daemons are started during system initialization from the
     /etc/init.d/network script	if the configuration flag nfs is set on	(see
     network(1M)).

FILES    [Toc]    [Back]

     When a file that is opened	by a client is unlinked	(by the	server), a
     file with a name of the form .nfsXXX (where XXX is	a number) is created
     by	the client.  When the open file	is closed, the .nfsXXX file is
     removed.  If the client crashes before the	file can be closed, the
     .nfsXXX file is not removed.




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nfsd(1M)							      nfsd(1M)

FILES    [Toc]    [Back]

     .nfsXXX	 client	machine	pointer	to an open-but-unlinked	file

SEE ALSO    [Toc]    [Back]

     exportfs(1M), mountd(1M), network(1M), exports(4).


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