rpc.nfsd - NFS server process
/usr/sbin/rpc.nfsd [options] nproc
The rpc.nfsd program implements the user level part of the NFS service. The main functionality is handled by the nfsd kernel module. The user space program merely specifies what sort of sockets the kernel service should listen on, what NFS versions it should support, and how many kernel threads it should use. The rpc.mountd server provides an ancillary service needed to satisfy mount requests by NFS clients.
-d or --debug enable logging of debugging messages -H or --host hostname specify a particular hostname (or address) that NFS requests will be accepted on. By default, rpc.nfsd will accept NFS requests on all known network addresses. Note that lockd (which performs file locking services for NFS) may still accept request on all known network addresses. This may change in future releases of the Linux Kernel. -p or --port port specify a different port to listen on for NFS requests. By default, rpc.nfsd will listen on port 2049. -N or --no-nfs-version vers This option can be used to request that rpc.nfsd does not offer certain versions of NFS. The current version of rpc.nfsd can support NFS versions 2,3,4 and the newer version 4.1. -s or --syslog By default, rpc.nfsd logs error messages (and debug messages, if enabled) to stderr. This option makes rpc.nfsd log these messages to syslog instead. Note that errors encountered during option processing will still be logged to stderr regardless of this option. -T or --no-tcp Disable rpc.nfsd from accepting TCP connections from clients. -U or --no-udp Disable rpc.nfsd from accepting UDP connections from clients. -V or --nfs-version vers This option can be used to request that rpc.nfsd offer certain versions of NFS. The current version of rpc.nfsd can support NFS versions 2,3,4 and the newer version 4.1. nproc specify the number of NFS server threads. By default, just one thread is started. However, for optimum performance several threads should be used. The actual figure depends on the number of and the work load created by the NFS clients, but a useful starting point is 8 threads. Effects of modifying that number can be checked using the nfsstat(8) program. Note that if the NFS server is already running, then the options for specifying host, port, and protocol will be ignored. The number of processes given will be the only option considered, and the number of active nfsd processes will be increased or decreased to match this number. In particular rpc.nfsd 0 will stop all threads and thus close any open connections.
If the program is built with TI-RPC support, it will enable any protocol and address family combinations that are marked visible in the netconfig database.
nfsd(7), rpc.mountd(8), exports(5), exportfs(8), rpc.rquotad(8), nfsstat(8), netconfig(5).
Olaf Kirch, Bill Hawes, H. J. Lu, G. Allan Morris III, and a host of others. 7 Aug 2006 rpc.nfsd(8)
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