Hi,
How to make ceph still work if the cluster lost all OSD hosts except one on disaster where the capacity of single host is bigger than total used data? I need to minimize downtime while recovering/reinstalling the lost hosts.
More generally, how to make ceph choose highest number of types after root (region) of CRUSH at first but still can step by step down to lowest number of types (osd) if the higher number of types is not available.
Best regards,
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