---
name: "nfsdumpstate"
section: "8"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["freebsd"]
url: "https://new.carta.tech/nfsdumpstate"
---

# nfsdumpstate(8)

display NFSv4 open/lock state

## NAME

**nfsdumpstate** – display NFSv4 open/lock state

## SYNOPSIS

**nfsdumpstate** \[**-o**\] \[**-l** *filename*\]

## DESCRIPTION

**nfsdumpstate** displays open/lock state for the NFSv4 client and server in the experimental nfs subsystem.

The options are as follows:

- **-o**

  Displays a summary of Clients for NFSv4. Each line lists a Client with the ClientID being the last field of the line.

  The following are the client flag values displayed:

  - NC

    Needs Confirmation

  - CB

    Callbacks are enabled

  - GSS

    Using RPCSEC\_GSS

  - REV

    Administratively Revoked, via [nfsrevoke(8)](/nfsrevoke/8.md)

- **-l** *filename*

  Displays a list of all NFSv4 Opens and Locks on the file specified by the *filename*. The ClientID is the last field of each line.

## SEE ALSO

[nfsv4(4)](/nfsv4/4.md), [nfsrevoke(8)](/nfsrevoke/8.md)

## HISTORY

The **nfsdumpstate** utility was introduced with the NFSv4 experimental subsystem in 2009.