Reiser4

Reiser4
Developer(s)Edward Shishkin and others[1]
Full nameReiser4
Introduced2004; 20 years ago (2004) with Linux
Partition IDsApple_UNIX_SVR2 (Apple Partition Map)

0x83 (MBR)

Basic data partition (GPT)
Structures
Directory contentsDancing B*-tree
Limits
Max file size8 TiB on x86
Max filename length3976 bytes
Allowed filename
characters
All bytes except NUL and '/'
Features
Dates recordedmodification (mtime), metadata change (ctime), access (atime)
Date range64-bit timestamps[2]
ForksNo
File system
permissions
Unix permissions
Transparent
compression
Yes
Transparent
encryption
No
Data deduplicationNo
Other
Supported
operating systems
Linux
Websitereiser4.wiki.kernel.org
Repositorygithub.com/edward6/reiser4

Reiser4 is a computer file system, successor to the ReiserFS file system, developed from scratch by Namesys and sponsored by DARPA as well as Linspire. Reiser4 was named after its former lead developer Hans Reiser. As of 2021, the Reiser4 patch set is still being maintained,[3][4] but according to Phoronix, it is unlikely to be merged into mainline Linux without corporate backing.[5]

  1. ^ "Credits - Reiser4 FS Wiki". reiser4.wiki.kernel.org. Retrieved 2019-08-05.
  2. ^ Documentation/filesystems/reiser4.txt from a reiser4-patched kernel source, "By default file in reiser4 have 64-bit timestamps."
  3. ^ Larabel, Michael (2019-04-13). "Reiser4 Brought To The Linux 5.0 Kernel - Phoronix". Phoronix. Retrieved 2019-08-04.
  4. ^ Cite error: The named reference reiser4sourceforge was invoked but never defined (see the help page).
  5. ^ "Ten Features You Will Not Find in the Mainline Linux 4.10 Kernel - Phoronix".