gcsfuser is a WIP Rust rewrite of gcsfuse on top of fuser.

gcsfuser is not ready for nearly anything (yet). It's also an exploratory project. We already have gcsfuse, but want to use gcsfuser to mostly as a peformance comparison that is written in a safe language (e.g., we chose not to compare with a rewrite in C++, despite our C++ library support for GCS).

Currently, gcsfuser can only handle basic reads and writes (see the included tests). If you use gcsfuser, it'll probably eat your data, trash your buckets, and so on. Do not run it against data you care about. There isn't any support, but patches are welcome (see CONTRIBUTING.md).

Read-only tests run successfully without a service account, but to write to a bucket requires a service account JSON file passed via the GOOGLE_APPLICATION_CREDENTIALS environment variable and specifying your read-write bucket in GCSFUSER_TEST_BUCKET. For example:

GOOGLE_APPLICATION_CREDENTIALS=~/account.json GCSFUSER_TEST_BUCKET=my-private-bucket RUST_LOG=info cargo test -- --nocapture

If you don't set GOOGLE_APPLICATION_CREDENTIALS or don't have write access to GCSFUSER_TEST_BUCKET, you should expect tests that interact with private buckets to fail. The current (2021-March-03) set of failures from a straightforward cargo test:

failures:
    fs::tests::large_write
    fs::tests::small_write
    gcs::tests::get_private_bucket
    gcs::tests::get_private_object
    gcs::tests::write_object_chunks
    gcs::tests::write_object_race
    gcs::tests::write_private_object