[LICENSING]
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ReiserFS is hereby licensed under the GNU General
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Public License version 2.
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Source code files that contain the phrase "licensing governed by
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reiserfs/README" are "governed files" throughout this file. Governed
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files are licensed under the GPL. The portions of them owned by Hans
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Reiser, or authorized to be licensed by him, have been in the past,
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and likely will be in the future, licensed to other parties under
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other licenses. If you add your code to governed files, and don't
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want it to be owned by Hans Reiser, put your copyright label on that
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code so the poor blight and his customers can keep things straight.
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All portions of governed files not labeled otherwise are owned by Hans
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Reiser, and by adding your code to it, widely distributing it to
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others or sending us a patch, and leaving the sentence in stating that
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licensing is governed by the statement in this file, you accept this.
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It will be a kindness if you identify whether Hans Reiser is allowed
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to license code labeled as owned by you on your behalf other than
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under the GPL, because he wants to know if it is okay to do so and put
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a check in the mail to you (for non-trivial improvements) when he
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makes his next sale. He makes no guarantees as to the amount if any,
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though he feels motivated to motivate contributors, and you can surely
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discuss this with him before or after contributing. You have the
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right to decline to allow him to license your code contribution other
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than under the GPL.
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Further licensing options are available for commercial and/or other
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interests directly from Hans Reiser: hans@reiser.to. If you interpret
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the GPL as not allowing those additional licensing options, you read
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it wrongly, and Richard Stallman agrees with me, when carefully read
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you can see that those restrictions on additional terms do not apply
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to the owner of the copyright, and my interpretation of this shall
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govern for this license.
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Finally, nothing in this license shall be interpreted to allow you to
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fail to fairly credit me, or to remove my credits, without my
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permission, unless you are an end user not redistributing to others.
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If you have doubts about how to properly do that, or about what is
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fair, ask. (Last I spoke with him Richard was contemplating how best
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to address the fair crediting issue in the next GPL version.)
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[END LICENSING]
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Reiserfs is a file system based on balanced tree algorithms, which is
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described at https://reiser4.wiki.kernel.org/index.php/Main_Page
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Stop reading here. Go there, then return.
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Send bug reports to yura@namesys.botik.ru.
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mkreiserfs and other utilities are in reiserfs/utils, or wherever your
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Linux provider put them. There is some disagreement about how useful
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it is for users to get their fsck and mkreiserfs out of sync with the
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version of reiserfs that is in their kernel, with many important
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distributors wanting them out of sync.:-) Please try to remember to
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recompile and reinstall fsck and mkreiserfs with every update of
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reiserfs, this is a common source of confusion. Note that some of the
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utilities cannot be compiled without accessing the balancing code
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which is in the kernel code, and relocating the utilities may require
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you to specify where that code can be found.
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Yes, if you update your reiserfs kernel module you do have to
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recompile your kernel, most of the time. The errors you get will be
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quite cryptic if your forget to do so.
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Real users, as opposed to folks who want to hack and then understand
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what went wrong, will want REISERFS_CHECK off.
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Hideous Commercial Pitch: Spread your development costs across other OS
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vendors. Select from the best in the world, not the best in your
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building, by buying from third party OS component suppliers. Leverage
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the software component development power of the internet. Be the most
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aggressive in taking advantage of the commercial possibilities of
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decentralized internet development, and add value through your branded
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integration that you sell as an operating system. Let your competitors
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be the ones to compete against the entire internet by themselves. Be
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hip, get with the new economic trend, before your competitors do. Send
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email to hans@reiser.to.
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To understand the code, after reading the website, start reading the
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code by reading reiserfs_fs.h first.
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Hans Reiser was the project initiator, primary architect, source of all
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funding for the first 5.5 years, and one of the programmers. He owns
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the copyright.
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Vladimir Saveljev was one of the programmers, and he worked long hours
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writing the cleanest code. He always made the effort to be the best he
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could be, and to make his code the best that it could be. What resulted
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was quite remarkable. I don't think that money can ever motivate someone
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to work the way he did, he is one of the most selfless men I know.
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Yura helps with benchmarking, coding hashes, and block pre-allocation
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code.
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Anatoly Pinchuk is a former member of our team who worked closely with
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Vladimir throughout the project's development. He wrote a quite
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substantial portion of the total code. He realized that there was a
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space problem with packing tails of files for files larger than a node
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that start on a node aligned boundary (there are reasons to want to node
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align files), and he invented and implemented indirect items and
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unformatted nodes as the solution.
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Konstantin Shvachko, with the help of the Russian version of a VC,
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tried to put me in a position where I was forced into giving control
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of the project to him. (Fortunately, as the person paying the money
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for all salaries from my dayjob I owned all copyrights, and you can't
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really force takeovers of sole proprietorships.) This was something
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curious, because he never really understood the value of our project,
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why we should do what we do, or why innovation was possible in
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general, but he was sure that he ought to be controlling it. Every
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innovation had to be forced past him while he was with us. He added
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two years to the time required to complete reiserfs, and was a net
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loss for me. Mikhail Gilula was a brilliant innovator who also left
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in a destructive way that erased the value of his contributions, and
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that he was shown much generosity just makes it more painful.
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Grigory Zaigralin was an extremely effective system administrator for
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our group.
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Igor Krasheninnikov was wonderful at hardware procurement, repair, and
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network installation.
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Jeremy Fitzhardinge wrote the teahash.c code, and he gives credit to a
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textbook he got the algorithm from in the code. Note that his analysis
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of how we could use the hashing code in making 32 bit NFS cookies work
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was probably more important than the actual algorithm. Colin Plumb also
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contributed to it.
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Chris Mason dived right into our code, and in just a few months produced
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the journaling code that dramatically increased the value of ReiserFS.
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He is just an amazing programmer.
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Igor Zagorovsky is writing much of the new item handler and extent code
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for our next major release.
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Alexander Zarochentcev (sometimes known as zam, or sasha), wrote the
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resizer, and is hard at work on implementing allocate on flush. SGI
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implemented allocate on flush before us for XFS, and generously took
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the time to convince me we should do it also. They are great people,
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and a great company.
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Yuri Shevchuk and Nikita Danilov are doing squid cache optimization.
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Vitaly Fertman is doing fsck.
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Jeff Mahoney, of SuSE, contributed a few cleanup fixes, most notably
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the endian safe patches which allow ReiserFS to run on any platform
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supported by the Linux kernel.
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SuSE, IntegratedLinux.com, Ecila, MP3.com, bigstorage.com, and the
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Alpha PC Company made it possible for me to not have a day job
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anymore, and to dramatically increase our staffing. Ecila funded
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hypertext feature development, MP3.com funded journaling, SuSE funded
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core development, IntegratedLinux.com funded squid web cache
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appliances, bigstorage.com funded HSM, and the alpha PC company funded
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the alpha port. Many of these tasks were helped by sponsors other
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than the ones just named. SuSE has helped in much more than just
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funding....
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