Support --ha-callout for high-availability callouts

[nfs-utils.git] / utils / mountd / mountd.man

diff --git a/utils/mountd/mountd.man b/utils/mountd/mountd.man
index 3d2b1a8bbf18845c3fb89cdf2c5756f0af387db3..64e508a26ea2768ad39ca98e4384b9c36162105f 100644 (file)
--- a/utils/mountd/mountd.man
+++ b/utils/mountd/mountd.man
@@ -2,7 +2,8 @@
 .\" mountd(8)
 .\"
 .\" Copyright (C) 1999 Olaf Kirch <okir@monad.swb.de>
 .\" mountd(8)
 .\"
 .\" Copyright (C) 1999 Olaf Kirch <okir@monad.swb.de>

-.TH rpc.mountd 8 "25 Aug 2000"
+.\" Modified by Paul Clements, 2004.
+.TH rpc.mountd 8 "31 Aug 2004"

 .SH NAME
 rpc.mountd \- NFS mount daemon
 .SH SYNOPSIS
 .SH NAME
 rpc.mountd \- NFS mount daemon
 .SH SYNOPSIS


@@ -98,6 +99,26 @@ Force
 to bind to the specified port num, instead of using the random port
 number assigned by the portmapper.
 .TP
 to bind to the specified port num, instead of using the random port
 number assigned by the portmapper.
 .TP

+.B \-H " or " \-\-ha-callout prog
+Specify a high availability callout program, which will receive callouts
+for all client mount and unmount requests. This allows 
+.B rpc.mountd
+to be used in a High Availability NFS (HA-NFS) environment. This callout is not
+needed (and should not be used) with 2.6 and later kernels (instead,
+mount the nfsd filesystem on
+.B /proc/fs/nfsd
+).
+The program will be called with 4 arguments.
+The first will be
+.B mount
+or
+.B unmount
+depending on the reason for the callout.
+The second will be the name of the client performing the mount.
+The third will be the path that the client is mounting.
+The last is the number of concurrent mounts that we believe the client
+has of that path.
+.TP

 .B \-V " or " \-\-nfs-version
 This option can be used to request that
 .B rpc.mountd
 .B \-V " or " \-\-nfs-version
 This option can be used to request that
 .B rpc.mountd