Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
MOUNTD(8)		FreeBSD	System Manager's Manual		     MOUNTD(8)

NAME
     mountd -- service remote NFS mount	requests

SYNOPSIS
     mountd [-2delnorS]	[-h bindip] [-p	port] [exportsfile ...]

DESCRIPTION
     The mountd	utility	is the server for NFS mount requests from other	client
     machines.	It listens for service requests	at the port indicated in the
     NFS server	specification; see Network File	System Protocol	Specification,
     RFC1094, Appendix A and NFS: Network File System Version 3	Protocol
     Specification, Appendix I.

     The following options are available:

     -2	     Allow the administrator to	force clients to use only the version
	     2 NFS protocol to mount file systems from this server.

     -d	     Output debugging information.  mountd will	not detach from	the
	     controlling terminal and will print debugging messages to stderr.

     -e	     The new NFS server	that includes NFSv4 support is now the
	     default, so this option is	now a no-op and	should be considered
	     deprecated.

     -h	bindip
	     Specify specific IP addresses to bind to for TCP and UDP
	     requests.	This option may	be specified multiple times.  If no -h
	     option is specified, mountd will bind to INADDR_ANY.  Note	that
	     when specifying IP	addresses with -h, mountd will automatically
	     add 127.0.0.1 and if IPv6 is enabled, ::1 to the list.

     -l	     Cause all succeeded mountd	requests to be logged.

     -n	     Allow non-root mount requests to be served.  This should only be
	     specified if there	are clients such as PC's, that require it.  It
	     will automatically	clear the vfs.nfsrv.nfs_privport sysctl	flag,
	     which controls if the kernel will accept NFS requests from
	     reserved ports only.

     -o	     This flag forces the system to run	the old	NFS server, which does
	     not have NFSv4 support in it.

     -p	port
	     Force mountd to bind to the specified port, for both AF_INET and
	     AF_INET6 address families.	 This is typically done	to ensure that
	     the port which mountd binds to is a known quantity	which can be
	     used in firewall rulesets.	 If mountd cannot bind to this port,
	     an	appropriate error will be recorded in the system log, and the
	     daemon will then exit.

     -r	     Allow mount RPCs requests for regular files to be served.
	     Although this seems to violate the	mount protocol specification,
	     some diskless workstations	do mount requests for their swapfiles
	     and expect	them to	be regular files.  Since a regular file	cannot
	     be	specified in /etc/exports, the entire file system in which the
	     swapfiles resides will have to be exported	with the -alldirs
	     flag.

     exportsfile
	     Specify an	alternate location for the exports file.  More than
	     one exports file can be specified.

     -S	     Tell mountd to suspend/resume execution of	the nfsd threads when-
	     ever the exports list is being reloaded.  This avoids intermit-
	     tent access errors	for clients that do NFS	RPCs while the exports
	     are being reloaded, but introduces	a delay	in RPC response	while
	     the reload	is in progress.	 If mountd crashes while an exports
	     load is in	progress, mountd must be restarted to get the nfsd
	     threads running again, if this option is used.

     When mountd is started, it	loads the export host addresses	and options
     into the kernel using the mount(2)	system call.  After changing the
     exports file, a hangup signal should be sent to the mountd	daemon to get
     it	to reload the export information.  After sending the SIGHUP (kill -s
     HUP `cat /var/run/mountd.pid`), check the syslog output to	see if mountd
     logged any	parsing	errors in the exports file.

     If	mountd detects that the	running	kernel does not	include	NFS support,
     it	will attempt to	load a loadable	kernel module containing NFS code,
     using kldload(2).	If this	fails, or no NFS KLD was available, mountd
     exits with	an error.

FILES
     /etc/exports	  the list of exported file systems
     /var/run/mountd.pid  the pid of the currently running mountd
     /var/db/mountdtab	  the current list of remote mounted file systems

SEE ALSO
     nfsstat(1), kldload(2), nfsv4(4), exports(5), nfsd(8), rpcbind(8),
     showmount(8)

HISTORY
     The mountd	utility	first appeared in 4.4BSD.

FreeBSD	10.1		       October 14, 2012			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO | HISTORY

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=mountd&sektion=8&manpath=FreeBSD+10.0-RELEASE>

home | help