Github user nreich commented on the issue: https://github.com/apache/geode/pull/704 The requirement for the ".gfd" extension currently resides in the ExportDataCommand from gfsh, the only non-internal entry point to create/restore a backup. This constraint could be also validated in RegionSnapshotServiceImpl before starting the local snapshot creation. I can add a toString to SnapshotOptions, some of the contents will still return an only somewhat helpful Object.toString() value, but it should provide the desired information.
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