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@@ -84,9 +84,13 @@ _/usr/share/openshift/examples_ because that is read-only on Atomic Host.
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### Storage Requirements
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-Atomic Host installs normally have a very small root filesystem. However the
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-etcd, master, and node containers will persist data in /var/lib. Please ensure
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-that you have enough space on the root filesystem.
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+Atomic Host installs by default have a small root filesystem. However
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+the etcd, master, and node containers will persist data in
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+`/var/lib`. Please ensure that you have enough space on the root
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+filesystem. This is usually handled by
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+[docker-storage-setup](https://github.com/projectatomic/docker-storage-setup/);
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+set e.g. `ROOT_SIZE=20G` in `/etc/sysconfig/docker-storage-setup` in
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+early host boot, such as inside a `cloud-init` boot hook.
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### OpenvSwitch SDN Initialization
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