Changed Block Tracking API Reaches Beta
By BIOS Founding Team
The CSI Changed Block Tracking feature, which lets storage drivers report which data blocks changed since the last snapshot, reached Beta via the external-snapshot-metadata sidecar project's v1.0.0 release.
It enables incremental backup and faster disaster recovery by transferring only modified blocks instead of entire volumes, currently for block volumes, with file-volume support planned.
Full details: https://kubernetes.io/blog/2026/09/14/csi-changed-block-tracking-beta/
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