ceph/ceph-deploy — pull request #200 by l-mb (2014-06-25 15:18:56+00:00)
Title: Fix "disk zap" sgdisk invocation

If the metadata on the disk is truly invalid, sgdisk would fail to zero
it in one go, because --mbrtogpt apparently tried to operate on the
metadata it read before executing --zap-all.

Splitting this up into two separate invocations to first zap everything
and then clear it properly fixes this issue.