MOUNTD(8) BSD System Manager's Manual MOUNTD(8)NAME
mountd -- service remote NFS mount requests
SYNOPSIS
Obsolete. See nfsd(8).
DESCRIPTION
The mountd daemon was formerly the server for NFS mount requests from NFS clients. This functionality has been moved into the NFS server
daemon nfsd(8).
Please refer to nfsd(8) for NFS server documenation.
The following is a list of former mountd options that are now available as nfsd(8) options:
mountd option nfsd option Description
-n-N allow non-root mounts
-r-R allow regular file mounts
exportsfile -F exportsfile alternate exports file
However, such configuration options are normally specified via nfs.conf(5).
When the NFS server is started, it loads the export host addresses and options into the kernel using the nfssvc(2) system call. After chang-
ing the list of exports (either directly or indirectly via a change in netgroup membership), the administrator should send a hangup signal to
the nfsd daemon to get it to reload the export information:
kill -s HUP `cat /var/run/nfsd.pid`
For backwards compatibility, the following should also work:
kill -s HUP `cat /var/run/mountd.pid`
Any errors encountered while processing the export entries will be logged via syslog(3).
FILES
/etc/exports the list of exported filesystems
/var/run/mountd.pid the pid of the currently running mountd
/var/run/mountdtab the current list of outstanding mounts served
/var/run/mountdexptab
information about exported file systems and directories (UUIDs, handles, ...)
SEE ALSO nfsd(8), exports(5), nfs.conf(5), nfsstat(1), portmap(8), showmount(8)HISTORY
The mountd utility first appeared in 4.4BSD. It's functionality was merged into nfsd(8) in Darwin 9.
BSD November 10, 2006 BSD
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MOUNTD(8) BSD 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 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 run-
ning 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.
BSD October 14, 2012 BSD