Update the content of the nfsv4.4 man page to reflect the final

choice of variable names for rc.conf and option name for the
experimental server.
Also replace the inaccurate description of the nfsv4 root lines
in /etc/exports, mostly with a reference to exports(5).

Approved by:	kib (mentor)

1 files changed, 56 insertions, 42 deletions

diff --git a/usr.sbin/nfsd/nfsv4.4 b/usr.sbin/nfsd/nfsv4.4
index b03f651..70b145b 100644
--- a/usr.sbin/nfsd/nfsv4.4
+++ b/usr.sbin/nfsd/nfsv4.4
@@ -81,14 +81,18 @@ The
 .Tn NFSv4
 protocol does not use a separate mount protocol and assumes that the
 server provides a single file system tree structure, rooted at the point
-in the local file system tree specified by the
+in the local file system tree specified by one or more
 .sp 1
 .Bd -literal -offset indent -compact
-V4: <rootdir>
+V4: <rootdir> [-sec=secflavors] [host(s) or net]
 .Ed
 .sp 1
-line in
-.Xr exports 5 .
+line(s) in the
+.Xr exports 5
+file.
+(See
+.Xr exports 5
+for details.)
 The
 .Xr nfsd 8
 allows a limited subset of operations to be performed on non-exported subtrees
@@ -131,23 +135,13 @@ On FreeBSD, the mapping daemon is called
 .Xr nfsuserd 8
 and has a command line option that overrides the domain component of the
 machine's hostname.
-This can be set in
-.Xr rc.conf 5
-via the nfsv4_userd_flags variable.
 For use of
 .Nm ,
-either client or server, this daemon must be enabled by setting
-.sp
-.Bd -literal -offset indent -compact
-nfsv4_enable="YES"
-.Ed
-.sp
-in
-.Xr rc.conf 5 .
+either client or server, this daemon must be running.
 If this ``<dns.domain>'' is not set correctly or the daemon is not running, ``ls -l'' will typically
 report a lot of ``nobody'' and ``nogroup'' ownerships.
 .Pp
-Although numbers are no longer used in the
+Although uid/gid numbers are no longer used in the
 .Nm
 protocol, they will still be in the RPC authentication fields when running
 using AUTH_SYS (sec=sys), which is the default.
@@ -176,28 +170,42 @@ or start
 .Xr mountd 8
 and
 .Xr nfsd 8
-with the ``-4'' option to force use of the experimental server.
+with the ``-e'' option to force use of the experimental server.
+The
+.Xr nfsuserd 8
+daemon must also be running.
 This will occur if
 .sp
 .Bd -literal -offset indent -compact
-nfsv4_enable="YES"
+nfs_server_enable="YES"
+nfsv4_server_enable="YES"
+nfsuserd_enable="YES"
 .Ed
 .sp
-is set in
-.Xr rc.conf 5 ,
-as above.
+are set in
+.Xr rc.conf 5 .
 .Pp
-You will also need to add a:
+You will also need to add at least one ``V4:'' line to the
+.Xr exports 5
+file and, before starting the server for the first time, create an empty
 .sp
 .Bd -literal -offset indent -compact
-V4: <rootdir>
+/var/db/nfs-stablerestart
 .Ed
 .sp
-line to the
-.Xr exports 5
-file, to tell the server where the
+file.
+The command
+.sp
+.Bd -literal -offset indent -compact
+install -o root -g wheel -m 600 /dev/null /var/db/nfs-stablerestart
+.Ed
+.sp
+executed as ``su'' should suffice.
+This can only be done when the server is not running and there are no
 .Nm
-tree is rooted.
+file system mounts against the server.
+If this file is lost during a crash, recovery from backups is
+recommended.
 .Pp
 If the file systems you are exporting are only being accessed via
 .Nm
@@ -247,19 +255,24 @@ command line.
 This will force use of the experimental client plus set ``tcp'' and
 .Nm .
 .Pp
+The
+.Xr nfsuserd 8
+must be running, as above.
 If the
 .Nm
-server that is being mounted on supports delegations, you can set
+server that is being mounted on supports delegations, you can start the
+.Xr nfscbd 8
+daemon to handle client side callbacks.
+This will occur if
 .sp
 .Bd -literal -offset indent -compact
-nfsv4_callbackdaemon_enable="YES"
+nfsuserd_enable="YES"
+nfscbd_enable="YES"
 .Ed
 .sp
-via
-.Xr rc.conf 5
-so that the client side callback daemon
-.Xr nfscbd 8
-is started upon boot.
+are set in
+.Xr rc.conf 5 .
+.sp
 Without a functioning callback path, a server will never issue Delegations
 to a client.
 .sp
@@ -267,14 +280,7 @@ By default, the callback address will be set to the IP address acquired via
 rtalloc() in the kernel and port# 7745.
 To override the default port#, a command line option for
 .Xr nfscbd 8
-can be set via the variable
-.sp
-.Bd -literal -offset indent -compact
-nfsv4_callbackdaemon_flag
-.Ed
-.sp
-using
-.Xr rc.conf 5 .
+can be used.
 .sp
 To get callbacks to work when behind a NAT gateway, a port for the callback
 service will need to be set up on the NAT gateway and then the address
@@ -298,6 +304,14 @@ options	NFSCL
 must be specified in the kernel's
 .Xr config 5
 file.
+.Pp
+Options can be specified for the
+.Xr nfsuserd 8
+and
+.Xr nfscbd 8
+daemons at boot time via the ``nfsuserd_flags'' and ``nfscbd_flags''
+.Xr rc.conf 5
+variables.
 .Sh FILES
 .Bl -tag -width /var/db/nfs-stablerestart -compact
 .It Pa /var/db/nfs-stablerestart