Ceph deployed by OpenStack Director has "min_size = 1" configured in pools

Solution In Progress - Updated -

Issue

  • A replicated Ceph OSD pool with min_size = 1 allows an object continue serving I/O when it has only 1 replica which could lead to data loss/data split-brain(incomplete PGs)/Unfound objects.

  • With default templates in OSP Director, pools will have "min_size = 1" configured as a default value.

Environment

  • Red Hat OpenStack Platform 8
  • Red Hat OpenStack Platform 9
  • Red Hat OpenStack Platform 10

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