verify-archive compares Backblaze backup archives to the local filesystem and reports any discrepancies it finds.

This program has gone through a few iterations in different languages. This repository originally belonged to the Ruby version. That version is still available on the ruby branch. An F# version is also available on the fsharp branch. The main branch is written in Rust. It’s the fastest of the three, so it’s the one I use.

Building

Clone the repository and do cargo build --release. The binary will be found at target/release/verify-archive once the build completes. If you don’t have a Rust environment, install cargo with your package manager or use rustup. I don’t have a minimum-supported Rust version, so assume I’m using the latest. There is also Nix flake in the repository that will set up a development environment.

Running

verify-archive takes two parameters: the archive to check and (optionally) the root directory to start checking. It currently defaults to /Volumes. Ideally it would adapt based on your platform, but I don’t use Backblaze with Windows, so I don’t know how it organizes the archive. The --root parameter at least allows you to change it as necessary.