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PowerScale OneFS Job Engine
Executive summary Job Engine Multiple jobs processing Job exclusion sets Job Engine management Job Engine orchestration and job processing
Job Engine orchestration and job processing overview
Coordinator process
Director process
Manager process
Worker threads
Job Engine checkpoints
Job Engine resource utilization monitoring
Job Engine throttling and flow control
Job Engine low-space behavior
Job performance
File system protection and management Job Engine monitoring and reporting Job Engine best practices and considerations Conclusion

Job Engine low-space behavior

Job Engine low-space behavior

  • In situations where the available capacity on one or more disk pools falls below a low-space threshold, the Job Engine engages low-space mode. This mode enables space-saving jobs to run and reclaim space before the Job Engine or even the cluster becomes unusable. When the Job Engine is in low-space mode, new jobs are not started, and any jobs that are not space-saving are paused. Once free space returns above the low-space threshold, jobs that have been paused for space are resumed.

    The space-saving jobs are:

    • AutoBalance(LIN)
    • Collect
    • MultiScan
    • ShadowStoreDelete
    • SnapshotDelete
    • TreeDelete

    Once the cluster is no longer space-constrained, any paused jobs are automatically resumed.