Date: Thu, 17 May 2012 14:15:46 +0200 From: Rafal Jaworowski <raj@semihalf.com> To: Aleksandr Rybalko <ray@dlink.ua> Cc: freebsd-fs@freebsd.org, Grzegorz Bernacki <gjb@semihalf.com>, freebsd-arm@freebsd.org, freebsd-embedded@FreeBSD.org Subject: Re: NAND Framework in HEAD. Message-ID: <EBD95B1F-63D7-4B83-A4CE-A223A8CB7F16@semihalf.com> In-Reply-To: <20120517135630.6ec31920.ray@dlink.ua> References: <4FB4EABA.702@semihalf.com> <20120517135630.6ec31920.ray@dlink.ua>
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On 2012-05-17, at 12:56, Aleksandr Rybalko wrote: > On Thu, 17 May 2012 14:10:34 +0200 > Grzegorz Bernacki <gjb@semihalf.com> wrote: >=20 >>> Hello, >>>=20 >>> 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. >>>=20 >>> The NAND Flash environment consists of a driver framework for NAND=20= >>> controllers and memory chips, a NAND device simulator and a fault=20 >>> tolerant, log-structured file system (NANDFS), tailored to meet the=20= >>> unique challenges of NAND flash storage. The package includes all >>> the tools, utilities and documentation needed to deploy this >>> technology in custom applications. >>>=20 >>> 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) >>>=20 >>> 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). >>>=20 >>> The NAND FS has the following major features: >>> - Hard links >>> - Symbolic links >>> - Case-sensitive, case-preserving >>> - Snapshots >>> =E2=80=93 No limit on the number of snapshots (only = volume-limited) >>> =E2=80=93 Mountable as read-only file systems >>> =E2=80=93 Simultaneously mountable (there can be a writable = mount >>> concurrently mixed with a number of read-only snapshots) >>> - Redundant super block >>> - Metadata >>> =E2=80=93 POSIX file permissions >>> =E2=80=93 Creation timestamps >>> =E2=80=93 Last content modification timestamps >>> =E2=80=93 Last metadata change timestamps >>> =E2=80=93 Checksum / ECC >>>=20 >>> Additional documentation related to project can be found at: >>> http://wiki.semihalf.com/moin.cgi/FreeBSD/NAND >>>=20 >>> The NAND Flash Framework was developed by Semihalf. Juniper Networks >>> and the FreeBSD Foundation kindly sponsored releasing the code to >>> the FreeBSD community. >>>=20 >>> regards, >>> grzesiek >>> _______________________________________________ >>> freebsd-embedded@freebsd.org mailing list >>> http://lists.freebsd.org/mailman/listinfo/freebsd-embedded >>> To unsubscribe, send any mail to >>> "freebsd-embedded-unsubscribe@freebsd.org" >=20 > Cool! Many thanks for that! to you Grzegorz and to whole Semihalf!!! This project was developed by Grzegorz Bernacki, Mateusz Guzik, =C5=81ukas= z P=C5=82achno, Jan Si=C4=99ka, =C5=81ukasz W=C3=B3jcik, 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
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