Radiant Data launches 64-bit Linux HA replicating file system (Linux-Watch) [LWN.net]

Radiant Data launches 64-bit Linux HA replicating file system (Linux-Watch)

Posted Apr 8, 2007 2:02 UTC (Sun) by madscientist (subscriber, #16861)
In reply to: Radiant Data launches 64-bit Linux HA replicating file system (Linux-Watch) by NAR
Parent article: Radiant Data launches 64-bit Linux HA replicating file system (Linux-Watch)

MVFS existed for other UNIX systems including SunOS, Solaris, HP-UX, and AIX for years before it was ported to Linux, so although it was not GPL'd originally it's reasonable to assume it is not a derivative work for the same reasons the video drivers discussed above are not (if they are not). The glue bits were released as source code (to be honest I can't remember the license) just as with other binary modules.

Although I switched jobs recently and am no longer using ClearCase, my understanding is that IBM (which bought Rational Software, which bought PureAtria, which was the combined company of Purify and Atria, which was the original vendor providing ClearCase) released the MVFS kernel module code under the GPL as of ClearCase 6.0, released last year or so.

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Radiant Data launches 64-bit Linux HA replicating file system (Linux-Watch)

Posted Apr 8, 2007 6:06 UTC (Sun) by drag (subscriber, #31333) [Link]

You have a similar issue with OpenAFS.

AFS is ancient, as old as X Windows or Kerberos. Part of that Athena project.

IBM released code for it and it has gone through tremendous improvements in terms of performance, code quality, and stability. Especially with newer releases.

But it's not under a GPL compatable license. Nobody can do anything about it since the original copyright owners are far gone and numerous. Still open source, though, and not a derivative of the kernel.