Updated: 2022/Sep/29

Please read Privacy Policy. It's for your privacy.

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

     mountd - service remote NFS mount requests

     mountd [-dN] [-P policy] [-p port] [exportsfile ...]

     mountd is the server for NFS mount requests from other client machines.
     mountd listens for service requests at the port indicated in the NFS
     server specification; see Network File System Protocol Specification, RFC
     1094, Appendix A, and NFS: Network File System Version 3 Protocol
     Specification, Appendix I.

     Options and operands available for mountd:

     -d          Enable debugging mode.  mountd will not detach from the
                 controlling terminal and will print debugging messages to

     -N          Do not require privileged ports for mount or NFS RPC calls.
                 This option is equivalent to specifying `-noresvport
                 -noresvmnt' on every export.  See exports(5) for more
                 information.  Some operating systems (notably Mac OS X)
                 require this option.

     -P policy   IPsec policy string, as described in ipsec_set_policy(3).
                 Multiple IPsec policy strings may be specified by using a
                 semicolon as a separator.  If conflicting policy strings are
                 found in a single line, the last string will take effect.  If
                 an invalid IPsec policy string is used mountd logs an error
                 message and terminates itself.

     -p port     Force mountd to bind to the given port.  If this option is
                 not given, mountd may bind to every anonymous port (in the
                 range 600-1023) which causes trouble when trying to use NFS
                 through a firewall.

                 The exportsfile argument specifies an alternative location
                 for the exports(5) file.  Multiple exports files can be

     When mountd is started, it loads the export host addresses and options
     into the kernel using the nfssvc(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.

     After receiving SIGTERM, mountd sends a broadcast request to remove the
     mount list from all the clients.  This can take a long time, since the
     broadcast request waits for each client to respond.

     /etc/exports             the list of exported filesystems
     /var/run/mountd.pid      the pid of the currently running mountd
     /var/db/mountdtab        the list of remotely mounted filesystems

     nfsstat(1), nfssvc(2), ipsec_set_policy(3), exports(5), nfsd(8),
     rpcbind(8), showmount(8)

     The mountd utility first appeared in 4.4BSD.

NetBSD 10.99                   February 16, 2021                  NetBSD 10.99