1rpc.nfsd(8) System Manager's Manual rpc.nfsd(8)
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6 rpc.nfsd - NFS server process
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9 /usr/sbin/rpc.nfsd [options] nproc
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12 The rpc.nfsd program implements the user level part of the NFS service.
13 The main functionality is handled by the nfsd kernel module. The user
14 space program merely specifies what sort of sockets the kernel service
15 should listen on, what NFS versions it should support, and how many
16 kernel threads it should use.
17 The rpc.mountd server provides an ancillary service needed to satisfy
19 mount requests by NFS clients.
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22 -d or --debug
23 enable logging of debugging messages
24 -H or --host hostname
26 specify a particular hostname (or address) that NFS requests
27 will be accepted on. By default, rpc.nfsd will accept NFS
28 requests on all known network addresses. Note that lockd (which
29 performs file locking services for NFS) may still accept request
30 on all known network addresses. This may change in future
31 releases of the Linux Kernel.
32 -p or --port port
34 specify a diferent port to listen on for NFS requests. By
35 default, rpc.nfsd will listen on port 2049.
36 -N or --no-nfs-version vers
38 This option can be used to request that rpc.nfsd does not offer
39 certain versions of NFS. The current version of rpc.nfsd can
40 support both NFS version 2,3 and the newer version 4.
41 -s or --syslog
43 By default, rpc.nfsd logs error messages (and debug messages, if
44 enabled) to stderr. This option makes rpc.nfsd log these mes‐
45 sages to syslog instead. Note that errors encountered during
46 option processing will still be logged to stderr regardless of
47 this option.
48 -T or --no-tcp
50 Disable rpc.nfsd from accepting TCP connections from clients.
51 -U or --no-udp
53 Disable rpc.nfsd from accepting UDP connections from clients.
54 nproc specify the number of NFS server threads. By default, just one
56 thread is started. However, for optimum performance several
57 threads should be used. The actual figure depends on the number
58 of and the work load created by the NFS clients, but a useful
59 starting point is 8 threads. Effects of modifying that number
60 can be checked using the nfsstat(8) program.
61 Note that if the NFS server is already running, then the options for
63 specifying host, port, and protocol will be ignored. The number of
64 processes given will be the only option considered, and the number of
65 active nfsd processes will be increased or decreased to match this num‐
66 ber. In particular rpc.nfsd 0 will stop all threads and thus close any
67 open connections.
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71 If the program is built with TI-RPC support, it will enable any proto‐
72 col and address family combinations that are marked visible in the net‐
73 config database.
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77 rpc.mountd(8), exports(5), exportfs(8), rpc.rquotad(8), nfsstat(8),
78 netconfig(5).
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81 Olaf Kirch, Bill Hawes, H. J. Lu, G. Allan Morris III, and a host of
82 others.
83 7 Aug 2006 rpc.nfsd(8)