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[LICENSING]

ReiserFS is hereby licensed under the GNU General

Public License version 2.

Source code files that contain the phrase "licensing governed by

reiserfs/README" are "governed files" throughout this file.  Governed

files are licensed under the GPL.  The portions of them owned by Hans

Reiser, or authorized to be licensed by him, have been in the past,

and likely will be in the future, licensed to other parties under

other licenses.  If you add your code to governed files, and don't

want it to be owned by Hans Reiser, put your copyright label on that

code so the poor blight and his customers can keep things straight.

All portions of governed files not labeled otherwise are owned by Hans

Reiser, and by adding your code to it, widely distributing it to

others or sending us a patch, and leaving the sentence in stating that

licensing is governed by the statement in this file, you accept this.

It will be a kindness if you identify whether Hans Reiser is allowed

to license code labeled as owned by you on your behalf other than

under the GPL, because he wants to know if it is okay to do so and put

a check in the mail to you (for non-trivial improvements) when he

makes his next sale.  He makes no guarantees as to the amount if any,

though he feels motivated to motivate contributors, and you can surely

discuss this with him before or after contributing.  You have the

right to decline to allow him to license your code contribution other

than under the GPL.

Further licensing options are available for commercial and/or other

interests directly from Hans Reiser: hans@reiser.to.  If you interpret

the GPL as not allowing those additional licensing options, you read

it wrongly, and Richard Stallman agrees with me, when carefully read

you can see that those restrictions on additional terms do not apply

to the owner of the copyright, and my interpretation of this shall

govern for this license.

Finally, nothing in this license shall be interpreted to allow you to

fail to fairly credit me, or to remove my credits, without my

permission, unless you are an end user not redistributing to others.

If you have doubts about how to properly do that, or about what is

fair, ask.  (Last I spoke with him Richard was contemplating how best

to address the fair crediting issue in the next GPL version.)

[END LICENSING]

Reiserfs is a file system based on balanced tree algorithms, which is

described at http://devlinux.com/namesys.

Stop reading here.  Go there, then return.

Send bug reports to yura@namesys.botik.ru.

mkreiserfs and other utilities are in reiserfs/utils, or wherever your

Linux provider put them.  There is some disagreement about how useful

it is for users to get their fsck and mkreiserfs out of sync with the

version of reiserfs that is in their kernel, with many important

distributors wanting them out of sync.:-) Please try to remember to

recompile and reinstall fsck and mkreiserfs with every update of

reiserfs, this is a common source of confusion.  Note that some of the

utilities cannot be compiled without accessing the balancing code

which is in the kernel code, and relocating the utilities may require

you to specify where that code can be found.

Yes, if you update your reiserfs kernel module you do have to

recompile your kernel, most of the time.  The errors you get will be

quite cryptic if your forget to do so.

Real users, as opposed to folks who want to hack and then understand

what went wrong, will want REISERFS_CHECK off.

Hideous Commercial Pitch: Spread your development costs across other OS

vendors.  Select from the best in the world, not the best in your

building, by buying from third party OS component suppliers.  Leverage

the software component development power of the internet.  Be the most

aggressive in taking advantage of the commercial possibilities of

decentralized internet development, and add value through your branded

integration that you sell as an operating system.  Let your competitors

be the ones to compete against the entire internet by themselves.  Be

hip, get with the new economic trend, before your competitors do.  Send

email to hans@reiser.to.

To understand the code, after reading the website, start reading the

code by reading reiserfs_fs.h first.

Hans Reiser was the project initiator, primary architect, source of all

funding for the first 5.5 years, and one of the programmers.  He owns

the copyright.

Vladimir Saveljev was one of the programmers, and he worked long hours

writing the cleanest code.  He always made the effort to be the best he

could be, and to make his code the best that it could be.  What resulted

was quite remarkable. I don't think that money can ever motivate someone

to work the way he did, he is one of the most selfless men I know.

Yura helps with benchmarking, coding hashes, and block pre-allocation

code.

Anatoly Pinchuk is a former member of our team who worked closely with

Vladimir throughout the project's development.  He wrote a quite

substantial portion of the total code.  He realized that there was a

space problem with packing tails of files for files larger than a node

that start on a node aligned boundary (there are reasons to want to node

align files), and he invented and implemented indirect items and

unformatted nodes as the solution.

Konstantin Shvachko, with the help of the Russian version of a VC,

tried to put me in a position where I was forced into giving control

of the project to him.  (Fortunately, as the person paying the money

for all salaries from my dayjob I owned all copyrights, and you can't

really force takeovers of sole proprietorships.)  This was something

curious, because he never really understood the value of our project,

why we should do what we do, or why innovation was possible in

general, but he was sure that he ought to be controlling it.  Every

innovation had to be forced past him while he was with us.  He added

two years to the time required to complete reiserfs, and was a net

loss for me.  Mikhail Gilula was a brilliant innovator who also left

in a destructive way that erased the value of his contributions, and

that he was shown much generosity just makes it more painful.

Grigory Zaigralin was an extremely effective system administrator for

our group.

Igor Krasheninnikov was wonderful at hardware procurement, repair, and

network installation.

Jeremy Fitzhardinge wrote the teahash.c code, and he gives credit to a

textbook he got the algorithm from in the code.  Note that his analysis

of how we could use the hashing code in making 32 bit NFS cookies work

was probably more important than the actual algorithm.  Colin Plumb also

contributed to it.

Chris Mason dived right into our code, and in just a few months produced

the journaling code that dramatically increased the value of ReiserFS.

He is just an amazing programmer.

Igor Zagorovsky is writing much of the new item handler and extent code

for our next major release.

Alexander Zarochentcev (sometimes known as zam, or sasha), wrote the

resizer, and is hard at work on implementing allocate on flush.  SGI

implemented allocate on flush before us for XFS, and generously took

the time to convince me we should do it also.  They are great people,

and a great company.

Yuri Shevchuk and Nikita Danilov are doing squid cache optimization.

Vitaly Fertman is doing fsck.

Jeff Mahoney, of SuSE, contributed a few cleanup fixes, most notably

the endian safe patches which allow ReiserFS to run on any platform

supported by the Linux kernel.

SuSE, IntegratedLinux.com, Ecila, MP3.com, bigstorage.com, and the

Alpha PC Company made it possible for me to not have a day job

anymore, and to dramatically increase our staffing.  Ecila funded

hypertext feature development, MP3.com funded journaling, SuSE funded

core development, IntegratedLinux.com funded squid web cache

appliances, bigstorage.com funded HSM, and the alpha PC company funded

the alpha port.  Many of these tasks were helped by sponsors other

than the ones just named.  SuSE has helped in much more than just

funding....