Be File System

{{cite web | url=http://www.zdnet.com/products/osuser/boj/hacker10.html | title=BeOS Journal 10: A First Look at DR9 | author=Scot Hacker | date=1997-07-01 | work=ZDNet | access-date=2007-03-22 |archive-url = https://web.archive.org/web/19991002123347/http://www.zdnet.com/products/osuser/boj/hacker10.html |archive-date = 1999-10-02}}</ref>"},"introduction_date":{"wt":"{{Start date and age|1997|05|10}}"},"partition_id":{"wt":"Be_BFS ([[Apple Partition Map|Apple]])<br>[[Partition type#PID_EBh|0xEB]] ([[Master Boot Record|MBR]])<br/>{{mono|42465331-3BA3-10F1-802A-4861696B7521}} ([[GUID Partition Table|GPT]])"},"directory_struct":{"wt":"[[B+ tree]]<ref name=\"practical-book\" />"},"file_struct":{"wt":"[[inode]]s"},"bad_blocks_struct":{"wt":"inodes"},"max_filename_size":{"wt":"255 characters"},"max_files_no":{"wt":"Unlimited"},"max_volume_size":{"wt":"~2 [[Exabyte|EB]] *"},"max_file_size":{"wt":"~260 [[Gigabyte|GB]] *"},"filename_character_set":{"wt":"All [[UTF-8]] but \"/\""},"dates_recorded":{"wt":"Access, Creation, Modified"},"date_range":{"wt":"Unknown"},"date_resolution":{"wt":"1s"},"forks_streams":{"wt":"Yes"},"attributes":{"wt":""},"file_system_permissions":{"wt":"Unix permissions, [[Access-control_list#POSIX_ACL|POSIX ACLs]]"},"compression":{"wt":"No"},"encryption":{"wt":"No"},"OS":{"wt":"[[BeOS]], [[Magnussoft ZETA|ZETA]], [[Haiku (operating system)|Haiku]], [[SkyOS]], [[Syllable (operating system)|Syllable]], [[Linux]]"}},"i":0}}]}'>

BFS

Developer	Be Inc.
Full name	Be File System
Introduced	May 10, 1997;29 years ago (1997-05-10) with BeOS Advanced Access Preview Release
Partition IDs	Be_BFS (Apple) 0xEB (MBR) 42465331-3BA3-10F1-802A-4861696B7521 (GPT)
Structures
Directory contents	B+ tree
File allocation	inodes
Bad blocks	inodes
Limits
Max volume size	~2 EB *
Max file size	~260 GB *
Max number</span>"}]]}'>no. of files	Unlimited
Max filename length	255 characters
Allowed filename characters	All UTF-8 but "/"
Features
Dates recorded	Access, Creation, Modified
Date range	Unknown
Date resolution	1s
Forks	Yes
File system permissions	Unix permissions, POSIX ACLs
Transparent compression	No
Transparent encryption	No
Other
Supported operating systems	BeOS, ZETA, Haiku, SkyOS, Syllable, Linux

The Be File System (BFS) is the native file system for the BeOS. In the Linux kernel, it is referred to as "BeFS" to avoid confusion with Boot File System.

BFS was developed by Dominic Giampaolo and Cyril Meurillon over a ten-month period, starting in September 1996, to provide BeOS with a modern 64-bit-capable journaling file system. It is case-sensitive and capable of being used on floppy disks, hard disks and read-only media such as CD-ROMs. However, its use on small removable media is not advised, as the file-system headers consume from 600 KB to 2 MB, rendering floppy disks virtually useless.

Like its predecessor, OFS (Old Be File System, written by Benoit Schillings - formerly BFS), it includes support for extended file attributes (metadata), with indexing and querying characteristics to provide functionality similar to that of a relational database.

Whilst intended as a 64-bit-capable file system, the size of some on-disk structures mean that the practical size limit is approximately 2 exabytes. Similarly the extent-based file allocation reduces the maximum practical file size to approximately 260 gigabytes at best and as little as a few blocks in a pathological worst case, depending on the degree of fragmentation.

1. ↑ Scot Hacker (1997-07-01). "BeOS Journal 10: A First Look at DR9". ZDNet. Archived from the original on 1999-10-02. Retrieved 2007-03-22.
2. 1 2 3 Henry Bortman. "Benoît Schillings, Software Engineer". The BeOS Bible. Archived from the original on 27 September 2006. Retrieved 2006-09-10.
3. ↑ Daniel Teixeira (2002-09-04). "OBFS Reaches Beta". Haiku News. Archived from the original on 2006-10-04. Retrieved 2006-12-09.
4. ↑