Longhorn now supports configurable CPU cores for the v2 data engine, offering both global and per-node configuration options.

Global Configuration

To set CPU cores globally, update the v2-data-engine-cpu-mask setting using a hexadecimal encoded string. For example:

• Use 0x01 to allocate 1 core
• Use 0x03 to allocate 2 cores
• Use 0x07 to allocate 3 cores

Per-node Configuration

For node-specific CPU core allocation, update the spec.dataEngineSpec.v2.cpuMask field of the instance manager with a hexadecimal encoded string. By default, this value is empty, and the v2 data engine will use the global setting specified by v2-data-engine-cpu-mask. When a per-node configuration is set, the v2 data engine will prioritize this value over the global setting for that specific node.