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CubeFS

v3.6.0Storage & Data
Aug 12, 2026

OTHER 24

A feature and maintenance release with expanded metadata, migration, storage-pool, learner, self-healing, proximity-read, and RocksDB capabilities. Operators need to follow the stated upgrade order and prerequisites; the release also contains corrective fixes, with no security advisories or explicit security flaws disclosed.

All 24 other recorded changesadditions 11 · value changes 8 · fixes 4 · constraints 1

additions (11)

  • - Added tag-aware migration and decommissioning for MetaPartitions and DataPartitions.
  • - Added per-tag concurrency limits and improved target-node selection, scheduling, and recovery control.
  • - Added Region management for metadata nodes and volumes, including default Regions, allowed Region sets, and MetaPartition Region policies.
  • - Added Region-aware placement validation, online policy updates, CLI operations, persistence, and monitoring metrics.
  • - Added pool-aware writable DataPartition metrics
  • - Supported lifecycle-based data rotation across storage pools.
  • - Added Raft learner support to MetaPartition recovery and decommissioning workflows.
  • - Added metadata alignment checks and automatic MetaPartition repair capabilities.
  • - Added Meta NearRead and follower-read support to route metadata reads to nearby, low-latency replicas.
  • - Added follower-read leases and dirty-inode tracking to preserve read-your-writes consistency after metadata updates.
  • - Added experimental RocksDB storage mode for MetaPartitions, with volume-level defaultStoreMode and per-replica memory / rocksdb selection.

value changes (8)

  • - Improved DataPartition placement and accounting across multiple storage pools.
  • - Improved learner selection, apply-progress validation, membership checks, and recovery scheduling to reduce service impact during replica replacement.
  • - Improved recovery diagnostics, apply-progress gating, snapshot handling, and cross-version compatibility.
  • - Improved RocksDB disk selection, unavailable reporting on disk failure, and learner or follower placement that mixes memory and RocksDB store modes.
  • - Optimized client read-ahead, retry backoff, batched directory reads, and inode/cache maintenance.
  • - Improved extent migration with lease validation, inode generation updates, retry budgets, and clearer error classification.
  • - Improved FlashNode cache-key generation, capacity accounting, prewarm status handling, heartbeat processing, and management messages.
  • - Improved DataPartition decommission token scheduling, cancellation cleanup, progress handling, and automatic bad-disk decommissioning.

fixes (4)

  • - Fixed stale client read-ahead data, cache-block double release, ticker leaks, and incomplete node-cache cleanup.
  • - Fixed DataNode available-space underflow
  • delayed repair of new replicas with insufficient tiny extents.
  • - Fixed DataPartition decommission token scheduling, cancellation cleanup, incorrect disk marking, and stalled bad-disk decommissioning.

constraints (1)

  • strengthened storage-mode, storage-type, and topology validation.
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