ceph/ceph — pull request #2160 by osynge (2014-07-29 15:18:00+00:00)
Title: Do not make directories by mistake.

Rational: I found I had created a series of OSD directories under "/dev/" when disks I thought existed did not exist.

Warning: This change will be noticed by end users and may effect deployment infrastructures.

Note: Please note this patch resolves this issue for ceph-deploy.
https://github.com/ceph/ceph-deploy/pull/224