> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/man/man9/deadfs.9.md).

# deadfs.9

`deadfs` — 拥有已回收 vnode 的伪文件系统

## 名称

`deadfs`

## 描述

`deadfs` 文件系统实现的操作不修改任何数据，而是返回指示无效 IO 的信号。其作用是为已回收的 [vnode(9)](/man/man9/vnode.9.md) 提供一个回退的 vnode 操作向量。

它是一个仅内核的伪文件系统，因此无法从用户态挂载。

## 参见

[insmntque(9)](/man/man9/insmntque.9.md), [vnode(9)](/man/man9/vnode.9.md), VOP\_RECLAIM(9)

## 历史

4.4BSD 的 UNIX 系统管理员手册（SMM）将 `deadfs` 描述为"被拒绝的 vnode 去死亡"的文件系统。

## 作者

`deadfs` 手册页由 Mateusz Piotrowski <0mp@FreeBSD.org> 编写。


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