Fwd: an operating system is not composed by few parts, it's not like a grandmother cake apples part 04

[Paolo Del Bene]

http://www.hp.com/hpinfo/newsroom/press/2008/080623a.html

News releaseHP Contributes Source Code to Open Source Community to Advance
Adoption of Linux PALO ALTO, Calif., June 23, 2008

Continuing its efforts to advance customer adoption of Linux, HP today
announced the contribution of its Tru64 UNIX Advanced File System (AdvFS)
source code to the open source community.

The AdvFS source code includes capabilities that increase uptime, enhance
security and help ensure maximum performance of Linux file systems. HP will
contribute the code as a reference implementation of an enterprise Linux
file system under the terms of General Public License Version 2 for
compatibility with the Linux kernel, as well as provide design
documentation, test suites and engineering resources.

Linux is one of the most prominent examples of free software and open
source development, and source code continues to draw interest from
developers, the user community and customers. HP, which ships a Linux
server at the rate of one per minute, has long provided open source
alternatives to customers and contributed to the open source community to
speed market development.

The source code serves as a rich technology base to advance ongoing
development of Linux by providing a comprehensive foundation for Linux
kernel developers to leverage and improve Linux file system functionality.

Developed by HP, AdvFS has been deployed for more than 16 years by
enterprises throughout the world. It simplifies file and storage
management, enables online system backups and increases data availability.
The integration of key AdvFS file system features also accelerates the
roadmap of future solutions designed to strengthen Linux for enterprise
customers.

“To ensure the highest levels of data security and availability, Linux
customers need full and immediate access to established technology,” said
Martin Fink, senior vice president and general manager, Business Critical
Systems, HP. “We continue to invest our engineering resources in the
development of that technology, while working with the open source
community to ensure accessibility and seamless integration.”

Increasing Linux performance and advancing productivity

Business demands for improved solutions are driving the Linux kernel
development community to focus on the advancement of file system
functionality. Currently, file systems are being developed through an open
community process. HP’s contribution fuels these efforts.

“HP’s contribution of the Advanced File System code, coupled with their
overall resource commitment to Linux, will greatly accelerate the
development and commercial availability of improved system functionality
for Linux,” said Jim Zemlin, executive director, Linux Foundation. “The
technology and engineering resources being made available for
next-generation file system projects are proof that HP is a true open
source community leader.”

Linux market leader

HP extended its worldwide lead in the Linux market with 38.6 percent of
revenue market share for the first quarter of 2008, according to IDC. HP
also holds the No. 1 Linux server market position in unit shipments, with
36.4 percent of market share worldwide.(1)

“HP’s contribution accelerates the development of future Linux file
systems, ensuring enhanced system performance to meet our increasingly
demanding needs,” said Professor Giovanni Aloisio, chief executive officer
of the Italian Southern Partnership for Advance Computational
Infrastructures (SPACI) in southern Italy. “Linux is playing a significant
role in our building of a supercomputing grid environment running HP
Integrity servers. We have used many technologies over the years, including
Tru64 UNIX with the Advanced File System, and this announcement assures
SPACI of continued Linux growth to conduct significant new research.”

The Tru64 UNIX Advanced File System source code, design documentation and
test suites are available by visiting
http://advfs.sourceforge.net<
http://www.hp.com/cgi-bin/leaving_hp.cgi?cc=us&lang=en&exit_text=Continue%20to%20site&area_text=Newsroom&area_link=http://www.hp.com/hpinfo/newsroom/index.html&exit_link=http://
advfs.sourceforge.net>.
More information on open source and Linux at HP is available at
www.hp.com/go/linux.

About HP

HP focuses on simplifying technology experiences for all of its customers –
from individual consumers to the largest businesses. With a portfolio that
spans printing, personal computing, software, services and IT
infrastructure, HP is among the world’s largest IT companies, with revenue
totaling $110.4 billion for the four fiscal quarters ended April 30, 2008.
More information about HP (NYSE: HPQ) is available at http://www.hp.com.
------------------------------

(1) IDC Worldwide Quarterly Server Tracker, May 2008.
------------------------------

This news release contains forward-looking statements that involve risks,
uncertainties and assumptions. If such risks or uncertainties materialize
or such assumptions prove incorrect, the results of HP and its consolidated
subsidiaries could differ materially from those expressed or implied by
such forward-looking statements and assumptions. All statements other than
statements of historical fact are statements that could be deemed
forward-looking statements, including but not limited to statements of the
plans, strategies and objectives of management for future operations; any
statements concerning expected development, performance or market share
relating to products and services; anticipated operational and financial
results; any statements of expectation or belief; and any statements of
assumptions underlying any of the foregoing. Risks, uncertainties and
assumptions include the execution and performance of contracts by HP and
its customers, suppliers and partners; the achievement of expected results;
and other risks that are described in HP’s Quarterly Report on Form 10-Q
for the fiscal quarter ended April 30, 2008 and HP’s other filings with the
Securities and Exchange Commission, including but not limited to HP’s
Annual Report on Form 10-K for the fiscal year ended October 31, 2007. HP
assumes no obligation and does not intend to update these forward-looking
statements.

© 2008 Hewlett-Packard Development Company, L.P. The information contained
herein is subject to change without notice. The only warranties for HP
products and services are set forth in the express warranty statements
accompanying such products and services. Nothing herein should be construed
as constituting an additional warranty. HP shall not be liable for
technical or editorial errors or omissions contained herein.
© 2011 Hewlett-Packard Development Company, L.P.


http://advfs.sourceforge.net/

Tru64 AdvFS Technology


What's AdvFS?

AdvFS is a file system that was developed by Digital Equipment Corp and
continues to be part of HP's
Tru64 operating system.  If you're not familiar with the Tru64 Advanced
File System, you can check out
the product documentation<
http://h30097.www3.hp.com/docs/pub_page/V51B_DOCS/V51B_DOCLIST.HTM#adm_docs
>on
HP's web site.

What's cool about AdvFS?

AdvFS has a number of interesting features:

  - Simplified file system and storage management


  - Flexible multi-device storage pools shared by multiple file systems,
  with or without a volume manager


  - Exceptional file system availability


  - No need to take file systems off-line to expand, shrink or reconfigure
  - Snapshots for consistent backups while applications are on-line
  - Ability to recover deleted files


  - Wide range of performance management tools


  - Fine grain control over file system and file placement within the
  storage pool
  - On-line rebalancing of files and free space across the storage pool
  - On-demand or background file and file system defragmentation


  - Transaction log management


  - Choices for logging metadata and data (selectable at the file system
  or file level) asynchronously or synchronously

What's available from this project?

This project is making available two generations of AdvFS source code,
licensed under GPLv2 to be compatible with the Linux kernel.   The first
generation is the version that is currently shipping on Tru64 which
represents a well tested enterprise quality file system that has been
deployed worldwide for many years.  The second generation is a port that
was completed a few years ago but never productized.  It includes major
improvements to portions of the file system and is functionally complete
but never went through extensive field or system testing.   The source code
is available from the download
page<https://sourceforge.net/project/showfiles.php?group_id=230741>
.

We're also including design documentation for both code bases.  The
documentions includes the "Hitchhikers Guide to AdvFS", which describes the
design of the Tru64 implemention of AdvFS, as well as  training materials
that go along with the Hitchhikers Guide.   The design of the second
generation is a set of component design specifications that describe
changes and enhancements that we made as part of the port.  The
documentation is available from the download
page<https://sourceforge.net/project/showfiles.php?group_id=230741>
.

We will also soon be making a set of test cases available so check back
here again.

Our objective is to make the code available so that Linux developers can
pick and choose pieces that make sense for existing and new linux file
systems.  Its also a good reference for anyone interested in file systems.
 However, we discourage Tru64 users from trying to build and use the code
as it won't be supported by HP on Tru64.

How is the code licensed?

The code on this site is licensed under the GPLv2 to be compatible with the
Linux kernel.

Questions?

If you have questions, please use the developers
forum<https://sourceforge.net/forum/?group_id=230741>or send a note to
the linux file system developers mailing list.


http://sourceforge.net/projects/advfs/forums/forum/833655

http://sourceforge.net/projects/advfs/forums/forum/833655/topic/2106644

http://h30097.www3.hp.com/docs/pub_page/V51B_DOCS/v51b_doclist.htm#adm_docs

now if you are interested you can watch the source code of GNU/KFreeBSD and
then tell us if there is or there is not any violation about.

for Richard Matthew Stallman in reply to me:

It would violate the GPL to load that CDDL-licensed module dynamically
into a GPL-covered kernel.
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