Merge branch 'upstream'

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

diff --git a/utils/mountd/mountd.man b/utils/mountd/mountd.man
index a815a52d66cdf6c6539054dc96f33fe76032ecb3..f8646d477670aaf028b01eda63c667e0b631bbb8 100644 (file)
--- a/utils/mountd/mountd.man
+++ b/utils/mountd/mountd.man
@@ -121,9 +121,16 @@ has of that path.
 .TP
 .BI "\-P," "" " \-\-state\-directory\-path "  directory
 specify a directory in which to place statd state information.
-If this option is not specified the default of 
+If this option is not specified the default of
 .BR /var/lib/nfs
-is used. (This is a Debian-specific extension.)
+is used.
+.TP
+.BR "\-t N" " or " "\-\-num\-threads=N"
+This option specifies the number of worker threads that rpc.mountd
+spawns.  The default is 1 thread, which is probably enough.  More
+threads are usually only needed for NFS servers which need to handle
+mount storms of hundreds of NFS mounts in a few seconds, or when
+your DNS server is slow or unreliable.
 .TP
 .B \-V " or " \-\-nfs-version
 This option can be used to request that
@@ -136,6 +143,21 @@ can support both NFS version 2 and the newer version 3.
 Print the version of
 .B rpc.mountd
 and exit.
+.TP
+.B \-g " or " \-\-manage-gids
+Accept requests from the kernel to map user id numbers into  lists of
+group id numbers for use in access control.  An NFS request will
+normally (except when using Kerberos or other cryptographic
+authentication) contains a user-id and a list of group-ids.  Due to a
+limitation in the NFS protocol, at most 16 groups ids can be listed.
+If you use the
+.B \-g
+flag, then the list of group ids received from the client will be
+replaced by a list of group ids determined by an appropriate lookup on
+the server. Note that the 'primary' group id is not affected so a
+.I newgroup
+command on the client will still be effective.  This function requires
+a Linux Kernel with version at least 2.6.21.
 
 .SH TCP_WRAPPERS SUPPORT
 This