Module versioning 

MARS reflink snapshots with epoch-based version management and retention. Mirror & Archive Recovery System (MARS) – zero-cost reflink snapshots with epoch-based version management and retention policies.

Structs

FileVersion

A single file version entry in the MARS versioning index.

VersionLookup

In-memory index mapping inodes and content hashes to version snapshots.

Functions

cleanup_cli

CLI entry point for version cleanup with optional dry-run mode.

cleanup_versions

Removes old versions exceeding count or size limits, preserving the newest.

copy_version_to_path

Extracts a specific version epoch to a destination path.

force_version_cli

CLI entry point for forcing a tagged version snapshot (not yet implemented).

list_versions

Lists all MARS versions for a live file by scanning the target root.

print_versions_table

Prints a formatted table of file versions to stdout, showing the last limit entries.

prune_global_history

Deletes oldest version snapshots globally until bytes_to_free bytes are reclaimed.

revert_file

Atomically reverts a live file to the specified version epoch via reflink.

verify_content_match

Compares two files by sampling the first and last 64KB of content.