---
name: "nvme_associate_ns_data-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_associate_ns_data-libnvme3"
---

# nvme\_associate\_ns\_data-libnvme3(2)

Associate Namespace Data Structure

## NAME

struct nvme\_associate\_ns\_data - Associate Namespace Data Structure

## SYNOPSIS

struct nvme\_associate\_ns\_data {\
     **\_\_u8 pad\[32\];**\
     **\_\_le32 ensid;**\
     **\_\_u8 ensnqn\[256\];**\
     **\_\_le32 unsid;**\
     **\_\_le16 uctrlid;**\
     **\_\_u8 unsnqn\[256\];**\
     **\_\_u8 rsvd554\[22\];**\
 };\

## Members

- pad

  Padding (PAD), shall be cleared to 0h

- ensid

  Exported Namespace ID (ENSID) to associate

- ensnqn

  Exported NVM Subsystem NQN (ENSNQN). Ignored for a memory-based controller, or if ESUBIDV is set.

- unsid

  Underlying Namespace ID (UNSID) to associate with *ensid*

- uctrlid

  Underlying Controller ID (UCTRLID). Ignored for a memory-based controller.

- unsnqn

  Underlying NVM Subsystem NQN (UNSNQN). Ignored for a memory-based controller.

- rsvd554

  Reserved