Most of the documentation is a snapshot of the old Namesys site (archive.org, 2007-09-29).
There was also a Reiser4 Wiki (archive.org, 2007-07-06) once on pub.namesys.com.
Reiser4 development appears to have stalled and ReiserFS is deprecated and scheduled to be removed from mainline Linux in 2025.
New pages
From Reiser4 FS Wiki
- 15:52, 12 November 2020 Transparent File Migration (hist) [11,773 bytes] Edward (Talk | contribs) (Added "Transparent File Migration" page)
- 13:27, 18 August 2020 Logical Volumes Howto (hist) [2,442 bytes] Edward (Talk | contribs) (Added "Logical Volumes Howto" page)