Limits RegistryPUBLIC RECORDLimits RegistryResearch Console →Maximum regular-file size using extents on ext4 with 64 KiB filesystem blocks.
The question, scope, and sources behind this Registry record.
Under the recorded filesystem formats version and parameters, establish 256 TiB.
Current frontiers derived from accepted Claims.
The accepted equality closes this optimization result.
Assertions tied to evidence, attribution, and review.
The frontier as it changed over time.
Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.
No accepted machine-checked reproductions are recorded for this Limit.
Limits Registry. LR-003701. ext4 maximum extent file size with 64 KiB blocks. 2026.