sm-notify - make the manpage a little more up-to-date

[nfs-utils.git] / utils / statd / sm-notify.8

diff --git a/utils/statd/sm-notify.8 b/utils/statd/sm-notify.8
index 29726d62929727f77898837b5de1f3239d00ba93..314e2c454ceff9623e0838173c723fd99d705bf2 100644 (file)
--- a/utils/statd/sm-notify.8
+++ b/utils/statd/sm-notify.8
@@ -2,13 +2,13 @@
 .\" sm-notify(8)
 .\"
 .\" Copyright (C) 2004 Olaf Kirch <okir@suse.de>
-.TH sm-notify 8 "8 Mar 2004
+.TH sm-notify 8 "19 Mar 2007
 .SH NAME
 sm-notify \- Send out NSM reboot notifications
 .SH SYNOPSIS
-.BI "/sbin/sm-notify [-d] [-q] [-m " time "]
+.BI "/sbin/sm-notify [-d] [-q] [-m " time "] [-p " port "] [-P " path "] [-v " my_name " ]
 .SH DESCRIPTION
-File locking over NFS requires a facility to notify peers in
+File locking over NFS (v2 and v3) requires a facility to notify peers in
 case of a reboot, so that clients can reclaim locks after
 a server crash, and/or
 servers can release locks held by the rebooted client.
@@ -20,23 +20,18 @@ notifications need to be sent out during reboot.
 The protocol used for this is called NSM, for
 .IR "Network Status Monitor" .
 .PP
-Commonly, these two features are provided by the
+This implementation separates these into separate program.
 .B rpc.statd
-daemon.
-The SuSE Linux Kernel includes a kernel level implementation
-of
-.BR statd ", "
-which keeps track of the hosts that need notifications, and
-accepts reboot notifications.
-.PP
-This is complemented by the
+tracks hosts which need to be notified and this
+.B sm-notify
+performs the notification.  When
+.B rpc.statd
+is started it will typically started
 .B sm-notify
-application, which is responsible for sending out the reboot
-notifications.
+but this is configurable.
 .SS Operation
 For each NFS client or server machine to be monitored,
-the kernel level
-.B statd
+.B rpc.statd
 creates a file in
 .BR /var/lib/nfs/sm ", "
 and removes the file if monitoring is no longer required.
@@ -70,13 +65,17 @@ option, you can override this. A value of 0 tells
 sm-notify to retry indefinitely; any other value is
 interpreted as the maximum retry time in minutes.
 .TP
-.BI -v " ipaddr
+.BI -v " ipaddr-or-hostname
 This option tells
 .B sm-notify
 to bind to the specified
 .IR ipaddr ,
+(or the ipaddr of the given
+.IR hostname )
 so that all notification packets originate from this address.
-This is useful for NFS failover.
+This is useful for NFS failover.  The given name is also used as the
+.I name
+of this host in the NSM request.
 .TP
 .BI -p " port
 instructs
@@ -90,6 +89,18 @@ a randomly chosen privileged port below 1024.
 Be quiet. This suppresses all messages except error
 messages while collecting the list of hosts.
 .TP
+.BI -P " /path/to/state/directory
+If
+.B sm-notify
+should look in a no-standard place of state file, the path can be
+given here.  The directories
+.B sm
+and
+.B sm.bak
+and the file
+.B state
+must exist in that directory with the standard names.
+.TP
 .B -n
 Do not update the NSM state. This is for testing only.
 .TP