Autotest’s Directory Structure

  • client: The autotest client. When using the autotest server, the entire client dir is deployed to the machine under test.
    • shared: All the files common to both autotest server and the client are in this directory. It needs to be here, rather than in the top level, because only /client is copied to machines under tests. If you add new modules to the shared library. Your library will then be importable as autotest.client.shared.mylibname.
    • bin: The autotest core python files are all here. Also, any libraries not shared with the server are here.
    • tools: All executables besides autotest itself are here. This includes helpers like boottool.
    • tests: All the tests go here. Each test should be in a directory, which we’ll call test_name. There should also be a file in that directory, which is the actual test. In addition, a file named control should also be in that directory to run the test with default paramaters. All other files the test depends on (and optionally other control files) should be in this directory as well.
    • site_tests: Same as above but for Internal client side tests.
    • profilers: Profilers are here. Profilers run during tests and are not tied to any one test.
  • conmux: This has conmux, which is a console multiplexer. This allows multiple people to share serial concentrators and power strips. Several different types of concentrators and strips are supported, and new ones can be added by writing simple expect scripts.
  • Documenation: This wiki is generally more up to date, but there are some old diagrams here.
  • mirror: This is used for mirroring kernels from
  • queue: This is an empty directory used for the file-system based queueing system.
  • results: This is an empty directory where results can sit.
  • scheduler: The scheduler lives here. The scheduler spawns autoserv instances to test new kernels.
  • server: The autotest server (sometimes called autoserv). Unlike the client, all the python files are just in the root dir. (Should we move them?)
    • doc: Some documentation files. Unfortunately, these are largely out of date. The wiki’s your best bet for documenation.
    • hosts: This contains all the host classes. SSHHost is what most users will be using.
    • tests and site_tests: These are the same as in the client.
  • tko: This is the web-based reporting backend for
  • ui: A script for generating control files.

Where should I put the files I’m adding?

Is this a generic module that will be useful on on both the client and the server? Then put it in client/shared. Or, if this module is providing site-specific functions for use on your local server, add the name to the libraries variable in client/shared/site_libraries.

Are you adding code to the client? Then put it in client. Remember that this code will only be accessible from other client code (and client-side tests), not from server code. Even though the server has a copy of the client, it generally avoids reaching into the client to import code (except for a few special cases). If you want to use your client code from the server as well then put it in the shared library, not on the client.

Are you adding code on the server? If it’s a new kind of host, add it in server/hosts. Be sure to add an import for you new kind of host to server/hosts/__init.py__, since the server code will import host classes by pulling in the whole host package, rather than importing classes from specific submodules.

Are you adding tests? Public client side tests should be added in client/tests/<name>. Private client side tests go in client/site_tests/<name>. Server-side tests should go into server/tests/<name> and again for private server side tests server/site_tests/<name>.