deadfs(9)

deadfs9

Pseudo-filesystem to own reclaimed vnodes

Overview

The deadfs file system implements operations that do not modify any data and instead return indications of invalid IO. Its role is to provide a fallback vnode operations vector for reclaimed vnode(9)'s.

It is a kernel-only pseudo-file system and so cannot be mounted from userspace.

Releases

4 releases since FreeBSD 14.4-RELEASE; the text changed 1 time.

  1. 14.4–15.1
  2. 16.0

History

UNIX System Manager's Manual (SMM) for 4.4BSD described deadfs as a file system “where rejected vnodes go to die”.

Authors

The deadfs manual page was written by Mateusz Piotrowski ⟨[email protected]⟩.

From base 16.0-CURRENT-20261027-61c70dc16a79 in FreeBSD 16.0-CURRENT (2026-10-27). Parsed by carta from the page's mdoc source.