Ceph MON processes crash or lose quorum during data rebalance in RHCS 4
Issue
During data rebalancing ( recovery or backfill ), Ceph MON processes create larger and larger memory allocation requests, potentially crashing with 'segfault' if the Kernel cannot honor the memory allocation request.
Environment
Red Hat Ceph Storage 4.x during data rebalancing.
Problem is more prominent with high OSD counts.
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