25 — External SSD and Scratch

Status

EXTERNAL_SSD_CONTROLLER=VALIDATED
TASK_SCRATCH_CONSUMERS=PLANNED
PROJECT_SCRATCH_OPT_IN=REQUIRED
SWAP_OPT_IN=REQUIRED

Authority

Current SSD controller/resource documents and docs/product/product_definition.md.

REQUIRED_PRODUCT_TARGET

Expose:

physical device identity;
mount state;
scratch state;
swap state;
capacity/usage;
active leases;
drain state;
safe-to-unplug state.

Project scratch use is explicit opt-in. Swap enable/disable is also explicit user choice when supported by the validated controller. A newly connected device is never adopted automatically.

Dense/mesh/refinement/texturing scratch consumers acquire storage only through the existing Governor-owned scratch lease boundary.

SCRATCH!=RAM
SWAP!=RAM

REJECTED

Automatic destructive repartitioning, formatting, destructive fsck, overwriting unknown filesystems, or force-unmounting an active lease.

Canonical-reference rule

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