Optimize the NFS export process.

Turn on use of incremental updates in mountd (requires our special mountd)
and stop automatic export of all filesystems to boss (requires changing the
default ZFS "sharenfs" attribute for filesystems).

defs-cloudlab-utah

@@ -148,6 +148,16 @@ ZFS_QUOTA_GROUP="10G"
 WITHAMD=0
 AMD_ROOT=/.amd_mnt/ops
 
+#
+# We have enough filesystems and enough nodes that we need to optimize --mike
+#
+# Note that when you turn on ZFS_NOEXPORT, you need to set the ZFS "sharenfs"
+# attribute to "off" for the root of the users/proj/groups filesystems,
+# otherwise filesystems will be exported twice.
+#
+ZFS_NOEXPORT=1
+INCREMENTAL_MOUNTD=1
+
 # Blockstores
 BS_IQN_PREFIX=iqn.2014-11.us.cloudlab.utah