From 668ebd5e264168458d203400260869689f6a6f33 Mon Sep 17 00:00:00 2001 From: brice Date: Wed, 9 Aug 2017 14:32:27 +1000 Subject: [PATCH] added section on overlayfs --- install_config/install/prerequisites.adoc | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/install_config/install/prerequisites.adoc b/install_config/install/prerequisites.adoc index d9ebda34dcfd..d155e506070d 100644 --- a/install_config/install/prerequisites.adoc +++ b/install_config/install/prerequisites.adoc @@ -199,6 +199,24 @@ SELINUX=enforcing SELINUXTYPE=targeted ---- +[discrete] +[[install-prerequisites-overlayfs]] +=== Using OverlayFS + +OverlayFS is a union file system that allows you to overlay one file system on +top of another. + +As of Red Hat Enterprise Linux 7.4, you have the option to configure your +{product-title} environment to use OverlayFS. The `overlay2` graph driver is +fully supported in addition to the older `overlay` driver. However, Red Hat +recommends using `overlay2` instead of `overlay`, because of its speed and +simple implementation. + +See the +link:https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux_atomic_host/7/html-single/managing_containers/#overlay_graph_driver[Overlay +Graph Driver] section of the Atomic Host documentation for instructions on how +to to enable the `overlay2` graph driver for the Docker service. + [[prereq-NTP]] === NTP