Cloning this bug to track refining the check such that it checks the conditions under which overlay/overlay2 are supported.
https://github.com/openshift/openshift-ansible/pull/4757
Commit pushed to master at https://github.com/openshift/openshift-ansible https://github.com/openshift/openshift-ansible/commit/2b1c7492c3c8400370bf675c93cc9ba4b4f83427 openshift_checks/docker_storage: overlay/2 support fix bug 1469197 https://bugzilla.redhat.com/show_bug.cgi?id=1469197 When Docker is configured with the overlay or overlay2 storage driver, check that it is supported and usage is below threshold.
Should be able to get https://github.com/openshift/openshift-ansible/pull/4791 merged for the 3.6.0 release so this should be unreleased.
Merged to the 3.6 branch. The implementation now checks that overlay/overlay2 storage is backed by xfs, that it has sufficient storage (configurable via max_overlay_usage_percent), and that the kernel is RHEL 7.3 or later (on EL systems). It is also possible now to use the overlay drivers and not have ansible reconfigure docker to add --selinux-enabled (Docker refuses to start if these are combined) by specifying openshift_docker_selinux_enabled=False.
Verified with openshift-ansible-3.6.167-1.git.0.0ce5583.el7.noarch.rpm
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2017:1716