diff -Nuar LVM2.2.02.67.orig//doc/example.conf.in LVM2.2.02.67//doc/example.conf.in
--- LVM2.2.02.67.orig//doc/example.conf.in	2010-05-20 13:47:21.000000000 +0000
+++ LVM2.2.02.67//doc/example.conf.in	2010-06-07 18:43:34.099693472 +0000
@@ -50,7 +50,9 @@
 
 
     # By default we accept every block device:
-    filter = [ "a/.*/" ]
+    # Gentoo: we exclude /dev/nbd by default, because it makes a lot of kernel
+    # noise when you probed while not available.
+    filter = [ "r|/dev/nbd.*|", "a/.*/" ]
 
     # Exclude the cdrom drive
     # filter = [ "r|/dev/cdrom|" ]
@@ -259,6 +261,8 @@
     # the new lvm2 on-disk metadata format.
     # The default value is set when the tools are built.
     # fallback_to_lvm1 = 0
+    # Gentoo: the LVM tools are a seperate package.
+    fallback_to_lvm1 = 0
 
     # The default metadata format that commands should use - "lvm1" or "lvm2".
     # The command line override is -M1 or -M2.
@@ -449,12 +453,12 @@
 
 # Metadata settings
 #
-# metadata {
+metadata {
     # Default number of copies of metadata to hold on each PV.  0, 1 or 2.
     # You might want to override it from the command line with 0 
     # when running pvcreate on new PVs which are to be added to large VGs.
-
-    # pvmetadatacopies = 1
+    # Gentoo: enable for data safety, but PV resize is then disabled.
+    #pvmetadatacopies = 2
 
     # Approximate default size of on-disk metadata areas in sectors.
     # You should increase this if you have large volume groups or
@@ -476,7 +480,7 @@
     # the supplied toolset to make changes (e.g. vgcfgrestore).
 
     # dirs = [ "/etc/lvm/metadata", "/mnt/disk2/lvm/metadata2" ]
-#}
+}
 
 # Event daemon
 #