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 would trigger a status change:
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You can force a volume remount by modifying the disk.volumes setting and adding the :k (keep) policy option. You can also return them to service dynamically (either remounting or reformatting) using SNMP. (v9.3)
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