rpc.statd - NSM status monitor
SYNOPSIS
/sbin/rpc.statd [-F] [-d] [-?] [-n name ] [-o port ] [-p
port ] [-V]
DESCRIPTION
The rpc.statd server implements the NSM (Network Status
Monitor) RPC protocol. This service is somewhat misnomed,
since it doesn't actually provide active monitoring as one
might suspect; instead, NSM implements a reboot notifica
tion service. It is used by the NFS file locking service,
rpc.lockd, to implement lock recovery when the NFS server
machine crashes and reboots.
Operation
For each NFS client or server machine to be monitored,
rpc.statd creates a file in /var/lib/nfs/sm. When start
ing, it iterates through these files and notifies the peer
rpc.statd on those machines.
OPTIONS
-F By default, rpc.statd forks and puts itself in the
background when started. The -F argument tells it
to remain in the foreground. This option is mainly
for debugging purposes.
-d By default, rpc.statd sends logging messages via
syslog(3) to system log. The -d argument forces it
to log verbose output to stderr instead. This
option is mainly for debugging purposes, and may
only be used in conjunction with the -F parameter.
-n, --name name
specify a name for rpc.statd to use as the local
hostname. By default, rpc.statd will call gethost
name(2) to get the local hostname. Specifying a
local hostname may be useful for machines with more
than one interfaces.
-o, --outgoing-port port
specify a port for rpc.statd to send outgoing sta
tus requests from. By default, rpc.statd will ask
portmap(8) to assign it a port number. As of this
writing, there is not a standard port number that
portmap always or usually assigns. Specifying a
port may be useful when implementing a firewall.
-p, --port port
specify a port for rpc.statd to listen on. By
default, rpc.statd will ask portmap(8) to assign it
a port number. As of this writing, there is not a
standard port number that portmap always or usually
implementing a firewall.
-? Causes rpc.statd to print out command-line help and
exit.
-V Causes rpc.statd to print out version information
and exit.
TCP_WRAPPERS SUPPORT
This rpc.statd version is protected by the tcp_wrapper
library. You have to give the clients access to rpc.statd
if they should be allowed to use it. To allow connects
from clients of the .bar.com domain you could use the fol
lowing line in /etc/hosts.allow:
statd: .bar.com
You have to use the daemon name statd for the daemon name
(even if the binary has a different name).
For further information please have a look at the tcpd(8)
and hosts_access(5) manual pages.
FILES
/var/lib/nfs/state
/var/lib/nfs/sm/*
/var/lib/nfs/sm.bak/*
SEE ALSO
rpc.nfsd(8), portmap(8)
AUTHORS
Jeff Uphoff <juphoff@transmeta.com>
Olaf Kirch <okir@monad.swb.de>
H.J. Lu <hjl@gnu.org>
Lon Hohberger <hohberger@missioncriticallinux.com>
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