NAND Framework in HEAD.

[Rafal Jaworowski]

On 2012-05-17, at 12:56, Aleksandr Rybalko wrote:

> On Thu, 17 May 2012 14:10:34 +0200
> Grzegorz Bernacki <gjb at semihalf.com> wrote:
> 
>>> Hello,
>>> 
>>> I would like to annouce merging of the project/nand branch into
>>> HEAD. The purpose of this project was to create a complete
>>> environment supportng NAND Flash devices in FreeBSD.
>>> 
>>> The NAND Flash environment consists of a driver framework for NAND 
>>> controllers and memory chips, a NAND device simulator and a fault 
>>> tolerant, log-structured file system (NANDFS), tailored to meet the 
>>> unique challenges of NAND flash storage. The package includes all
>>> the tools, utilities and documentation needed to deploy this
>>> technology in custom applications.
>>> 
>>> The NAND Flash environment consists of several distinct components:
>>>   - NAND framework (drivers harness for NAND controllers and NAND
>>> chips)
>>>   - NAND simulator (NANDsim)
>>>   - NAND file system (NAND FS)
>>>   - Companion tools and utilities
>>>   - Documentation (manual pages)
>>> 
>>> NAND FS adopts log-structured approach and some parts of its
>>> internal design are derived from the new implementation of the
>>> log-structured file system (NILFS), with some concepts rooting in
>>> the original (now legacy) BSD log-structured file system (LFS).
>>> 
>>> The NAND FS has the following major features:
>>>   - Hard links
>>>   - Symbolic links
>>>   - Case-sensitive, case-preserving
>>>   - Snapshots
>>>     – No limit on the number of snapshots (only volume-limited)
>>>     – Mountable as read-only file systems
>>>     – Simultaneously mountable (there can be a writable mount
>>> concurrently mixed with a number of read-only snapshots)
>>>   - Redundant super block
>>>   - Metadata
>>>     – POSIX file permissions
>>>     – Creation timestamps
>>>     – Last content modification timestamps
>>>     – Last metadata change timestamps
>>>     – Checksum / ECC
>>> 
>>> Additional documentation related to project can be found at:
>>> http://wiki.semihalf.com/moin.cgi/FreeBSD/NAND
>>> 
>>> The NAND Flash Framework was developed by Semihalf. Juniper Networks
>>> and the FreeBSD Foundation kindly sponsored releasing the code to
>>> the FreeBSD community.
>>> 
>>> regards,
>>> grzesiek
>>> _______________________________________________
>>> freebsd-embedded at freebsd.org mailing list
>>> http://lists.freebsd.org/mailman/listinfo/freebsd-embedded
>>> To unsubscribe, send any mail to
>>> "freebsd-embedded-unsubscribe at freebsd.org"
> 
> Cool! Many thanks for that! to you Grzegorz and to whole Semihalf!!!

This project was developed by Grzegorz Bernacki, Mateusz Guzik, Łukasz Płachno, Jan Sięka, Łukasz Wójcik, with some help from Jakub Klama and yours truly. We would like to thank Marcel Moolenaar, Larkland Morley and Craig Rodrigues for testing, problem reports and integration at Juniper side.

Rafal