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OpenAFS is an open source implementation of the Andrew distributed file system (AFS). AFS was originally developed at Carnegie Mellon University, and developed as a commercial product by the Transarc Corporation, which was subsequently acquired by IBM. At LinuxWorld on 15 August 2000, IBM announced their plans to release a version of their commercial AFS product under the IBM Public License. This became OpenAFS. Today, OpenAFS is actively developed for a wide range of operating system families including: AIX, Mac OS X, Darwin, HP-UX, Irix, Solaris, Linux, Microsoft Windows, FreeBSD, NetBSD and OpenBSD.

Governance

Governance of the project is split between the board of elders who consider issues of strategic direction, and the gatekeepers who control the source repository. At the moment, all gatekeepers are also members of the board of elders.

Licensing

Although there is no legal entity that owns the OpenAFS source code, copyright on many files is attributed to IBM. Most of the source is covered by the IPL, however several files in the tree are covered by university vanity licenses. All applicable licenses are listed in a file in the source repository called openafs/doc/LICENSE.

Development

The contributors over the last five years have made significant improvements to both the implementation and the AFS3 protocol without breaking interoperability with the IBM/Transarc releases. Since that announcement was written, several large development projects have been integrated, such as: 64-bit Windows support, Windows Vista support, Mac OS X v10.4 and v10.5 support, and the demand attach fileserver.

Many development projects are at various stages of completion. The following are several prominent examples:

• fileserver backend utilizing object storage
• rxtcp
• rxgk
• rxk5
• instrumentation framework
• byte-range locking support

Deployment

The existing user base includes small single server cells as well as large multinational deployments spanning academia, private research laboratories, government, and commercial entities. A small snapshot of the deployed AFS cells can be found by reviewing the contents of the CellServDB file distributed with OpenAFS.

Commercial Support

Commercial support and contract development for OpenAFS are available from companies such as Sine Nomine Associates and Secure Endpoints Inc.

External links

Free software portal

• OpenAFS web site
• AFS Wiki

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