Maintainer note: Forward ported without editing from lvm2-2.02.108-example.conf.in.patch to apply cleanly.

--- LVM2.2.02.129/conf/example.conf.in
+++ LVM2.2.02.129/conf/example.conf.in
@@ -128,6 +128,9 @@
 	# Example
 	# 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/.*/" ]
 	# Reject the cdrom drive:
 	# filter = [ "r|/dev/cdrom|" ]
 	# Work with just loopback devices, e.g. for testing:
@@ -620,7 +623,8 @@
 	# tools need to be installed with .lvm1 suffices, e.g. vgscan.lvm1.
 	# They will stop working once the lvm2 on-disk metadata format is used.
 	# This configuration option has an automatic default value.
-	# fallback_to_lvm1 = @DEFAULT_FALLBACK_TO_LVM1@
+	# Gentoo: the LVM tools are a seperate package.
+	fallback_to_lvm1 = 0
 
 	# Configuration option global/format.
 	# The default metadata format that commands should use.
@@ -1413,7 +1417,7 @@
 
 # Configuration section metadata.
 # This configuration section has an automatic default value.
-# metadata {
+metadata {
 
 	# Configuration option metadata/pvmetadatacopies.
 	# Number of copies of metadata to store on each PV.
@@ -1431,7 +1435,8 @@
 	# 
 	# This configuration option is advanced.
 	# This configuration option has an automatic default value.
-	# pvmetadatacopies = 1
+	# Gentoo: enable for data safety, but PV resize is then disabled.
+	# pvmetadatacopies = 2
 
 	# Configuration option metadata/vgmetadatacopies.
 	# Number of copies of metadata to maintain for each VG.
@@ -1486,7 +1491,7 @@
 	# 
 	# This configuration option is advanced.
 	# This configuration option does not have a default value defined.
-# }
+}
 
 # Configuration section report.
 # LVM report command output formatting.