The storage cluster is designed to automatically adapt when a volume (hard drive) or node fails for any reason. Swarm checks every storage cluster volume during the node startup procedure, and it tracks any gaps in service that trigger a status change:
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Force a volume remount by modifying the disk.volumes setting and adding the :k (keep) policy option. Return them to service dynamically (either remounting or reformatting) using SNMP. (v9.3)
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Reformatting the volume allows it to be filled by the health processor (HP) in an orderly fashion. Doing so Performing this prevents creating excessive work for the health processor and prevents generating trapped space needed to be reclaimed.
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