ReiserFS

Filesystems
Virtual Filesystems
VFS
Disk Filesystems
FAT 12/16/32, VFAT, ExFAT Ext 2/3/4 LEAN HPFS NTFS HFS HFS+ MFS ReiserFS FFS (Amiga) FFS (BSD)/UFS BeFS BFS XFS SFS ZDSFS ZFS USTAR
CD/DVD Filesystems
ISO 9660 Joliet UDF
Network Filesystems
NFS RFS AFS
Flash Filesystems
JFFS2 YAFFS

About ReiserFS

ReiserFS is a journaling file system that is free if your OS is free, and comes at a licensing cost if your OS is not free. It has excellent performance on large directories and small files, using "dancing trees" instead of B-trees, and does meta-data journaling to improve file-system stability across system crashes.

Unlike "classic" filesystems, Reiser allows you to have files that occupy less than one sector on the disk (i.e. it can store several tiny files or tails of files on the same sector) through its tree organization.

As of version 3.6, ReiserFS supports:

• A maximum of 2³² - 3 files in total
• A maximum of 2³² - 4 files in a single directory (In practice this value is limited by the hash function. The r5 hash allows about 1 200 000 file names without collisions.)
• A theoretical maximum file size of 1 EiB (2⁶⁰) but the page cache limits this to 16 TiB on architectures with 32 bit integers.
• A maximum of 2³² number links to a file
• and A maximum filesystem size of 16 TiB (2³²) using 4KiB blocks

Links

• http://www.namesys.com - the ReiserFS homepage
• http://p-nand-q.com/download/rfstool/reiserfs_docs.html - Documentation regarding the format of ReiserFS
• http://en.wikipedia.org/wiki/ReiserFS