---
name: "nvme_registrant_ext-libnvme3"
section: "2"
platform: "linux"
package: "nvme-cli"
version: "3.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/nvme_registrant_ext-libnvme3"
---

# nvme\_registrant\_ext-libnvme3(2)

Registrant Extended Data Structure

## NAME

struct nvme\_registrant\_ext - Registrant Extended Data Structure

## SYNOPSIS

struct nvme\_registrant\_ext {\
     **\_\_le16 cntlid;**\
     **\_\_u8 rcsts;**\
     **\_\_u8 rsvd3\[5\];**\
     **\_\_le64 rkey;**\
     **\_\_u8 hostid\[16\];**\
     **\_\_u8 rsvd32\[32\];**\
 };\

## Members

- cntlid

  Controller ID

- rcsts

  Reservation Status

- rsvd3

  Reserved

- rkey

  Reservation Key

- hostid

  Host Identifier

- rsvd32

  Reserved