CubeSandbox v0.8.0 Adds Crash Restart, JuiceFS COW and FS-Only Snapshots

Key Info

CubeSandbox, an open-source sandbox runtime for AI agents built on RustVMM and KVM, has shipped v0.8.0 with new reliability, storage and scheduling features.

Highlights

• Crash restart: a configurable restart policy brings a failed service's sandbox back on the same node
• JuiceFS COW (preview): metadata stored in existing Redis, MySQL or TiKV, so templates and paused sandboxes work on any machine in the cluster
• FS-only snapshots: snapshot just the filesystem, lowering snapshot cost and letting new sandboxes boot directly from one
• Scheduling: built-in plugins, CEL or a custom gRPC service, plus a test bench that scores a strategy before real traffic
• Also added: cross-node resume on JuiceFS-backed clusters and sandbox-to-sandbox port mapping over plain TCP