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FreeBSD 11.0 - man page for mountd (freebsd section 8)

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MOUNTD(8)			   BSD System Manager's Manual				MOUNTD(8)

     mountd -- service remote NFS mount requests

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

     The mountd utility is the server for NFS mount requests from other client machines.  It lis-
     tens 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 automati-
	     cally add 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 swap-
	     files resides will have to be exported with the -alldirs flag.

	     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 whenever the exports
	     list is being reloaded.  This avoids intermittent 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.

     /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

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

     The mountd utility first appeared in 4.4BSD.

BSD					 October 14, 2012				      BSD
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