Module disk 

Free-space checks for the volume holding the output directory: an up-front comparison against the run’s estimated output size (see pipeline::estimate_output_bytes) and a DiskGuard polled during generation, so a run stops cleanly instead of filling the disk.

Structs

DiskGuard

Polled during generation: fails once free space on the output volume drops below MIN_FREE_BYTES. Only that one disk’s storage figures are refreshed per check, so polling it once per batch is cheap.

Constants

MIN_FREE_BYTES

Free space below which a running generation stops. Comfortably more than one batch’s worth of output (a 500K-row IPC batch of the widest schemas is ~200 MB), so the stop happens before a write can fail.

Functions

available_space

Free space (bytes) on the volume holding path, or None if it can’t be determined (unusual filesystem, sandbox) — callers then skip the check rather than block a run on a guess.

gb