OS Manuals

/usr/bin/rpc.mountd

NFS server: export management and the nfsd/mountd daemons

From nfs-utils-server 2.9.2-r2 (os), captured 2026-11-05 by running rpc.mountd --help (exit 0). permalink

Usage: rpc.mountd [-F|--foreground] [-h|--help] [-v|--version] [-d kind|--debug kind]
	[-l|--log-auth] [-i|--cache-use-ipaddr] [-T|--ttl ttl]
	[-o num|--descriptors num]
	[-p|--port port] [-V version|--nfs-version version]
	[-N version|--no-nfs-version version] [-n|--no-tcp]
	[-H prog |--ha-callout prog] [-r |--reverse-lookup]
	[-s|--state-directory-path path] [-g|--manage-gids]
	[-t num|--num-threads=num] [-u|--no-udp]
	[-L|--no-netlink]
Options (20)
OptionDescriptionSource
-d, --debug kindTurn on debugging.man
-l, --log-authEnable logging of responses to authentication and access requests from nfsd.man
-i, --cache-use-ipaddrNormally each client IP address is matched against each host identifier (name, wildcard, netgroup etc) found in /etc/exports and a combined identity is formed from all matching identifiers.man
-T, --ttlProvide a time-to-live (TTL) for cached information given to the kernel.man
-F, --foregroundRun in foreground (do not daemonize)man
-h, --helpDisplay usage message.man
-o, --descriptors numSet the limit of the number of open file descriptors to num.man
-N, --no-nfs-version mountd-versionThis option can be used to request that rpc.mountd do not offer certain versions of NFS.man
-n, --no-tcpDon't advertise TCP for mount.man
-p, -P, --port numSpecifies the port number used for RPC listener sockets.man
-H, --ha-callout progSpecify a high availability callout program.man
-s, --state-directory-path directorySpecify a directory in which to place state information (etab and rmtab).man
-r, --reverse-lookuprpc.mountd tracks IP addresses in the rmtab file.man
-t, --num-threads, --num-threads NThis option specifies the number of worker threads that rpc.mountd spawns.man
-u, --no-udpDon't advertise UDP for mountingman
-V, --nfs-version versionThis option can be used to request that rpc.mountd offer certain versions of NFS.man
-v, --versionPrint the version of rpc.mountd and exit.man
-c, --apply-root-credWhen mountd is asked to allow a NFSv3 mount to a subdirectory of the exported directory, then it will check if the user asking to mount has lookup rights to the directories below that exported…man
-g, --manage-gidsAccept requests from the kernel to map user id numbers into lists of group id numbers for use in access control.man
-L, --no-netlinkDisable the use of netlink for kernel communication and force the use of the legacy /proc/net/rpc interfaces instead.man

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.