saving uncommitted changes in /etc prior to emerge run

initramfs.mounts

@@ -0,0 +1,23 @@
+# This specifies which mounts from your fstab should be mounted before
+# switching to the real root. If this file is missing, genkernel's code will
+# default to just "/usr", which will suffice on most systems with a seperate
+# /usr mount.
+#
+# If you have a complex configuration with a bindmount or symlink at /usr, or
+# need some other mountpoints at boot, you should update this file such that
+# /usr and anything else needed will be available after the switch into the
+# real root.
+#
+# The lines without comments in this file are used as exact matches against the
+# second column of your /etc/fstab and the device, fstype and mount options are
+# taken from that line in fstab. If no line matches, the line from this file
+# will be ignored.
+#
+
+/usr
+
+# If you had some need of these:
+#/usr/local
+#/opt
+#/var
+#/home