<commit_before><commit_msg>V-38655: Mount w/noexec exception [docs only]<commit_after>**Exception**

Neither Ubuntu nor openstack-ansible will configure any removable media mounts
by default. Deploys are strongly urged to mount any additional disks with the
``noexec`` mount option set.

For more information about the ``noexec`` mount option, review this `good
answer from a ServerFault user about noexec`_.

.. _good answer from a ServerFault user about noexec: http://serverfault.com/questions/72356/how-useful-is-mounting-tmp-noexec

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