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How to reclaim space on StorageGRID after versioned objects are Deleted

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Applies to

  • StorageGRID
  • ONTAP
  • Fabric Pool

Description

ONTAP issued deletes were placing a delete marker instead of actual deletes when versioning is enabled.

Object deletion and defragmentation:

  • FabricPool does not delete blocks from attached object stores. Instead, FabricPool defragments objects based on the percentage of used blocks in the object.
  • Defragmentation reclaims space that is used by blocks that have been deleted or that are no longer being referenced by ONTAP's local tier.
  • Defragmentation and deletion do not occur until less than the unreclaimed space threshold being referenced by ONTAP is met.
  • When enough (1,024) blocks have zero references, their original 4MB objects are deleted, and a new 4MB object is created.

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