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.
Reiser4 FS Wiki:Copyrights
From Reiser4 FS Wiki
Reiser4 wiki copyright
All submitted work is governed by the Creative Commons Attribution/Share-Alike License, except for content where different terms apply:
archive.org copyright
Please see their terms of use.
namesys.com copyright
As namesys.com is down, we were not able to copy any content from this site or lookup their terms of use. Please let us know if you find something.