Fix: Docker on Centos/rhel7 defaults to missing d_type on xfs

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Background The Docker overlay2 storage driver requires the xfs d_type feature to functioning correctly. That means the xfs filesystem needs to be created with mkfs.xfs -n ftype=1 /path/to/dev Unfortunately, that is not the default in RHEL/Centos7. So you end up with an unstable Docker install. See the output of xfs_info and look for ftype=0 If… Read more »