libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

struct nvme\_host\_addressable\_ns\_data - Addressable Namespaces Data Structure

# [SYNOPSIS](#SYNOPSIS)

struct nvme\_host\_addressable\_ns\_data {  
**\_\_le32 nsid;**  
**\_\_u8 mat;**  
**\_\_u8 rsvd5\[3];**  
**\_\_le64 memo;**  
};

# [Members](#Members)

[nsid](#nsid)

Namespace Identifier, may or may not be attached to the controller processing the command

[mat](#mat)

Memory Access Type, see *enum nvme\_host\_addressable\_ns\_mat*

[rsvd5](#rsvd5)

Reserved

[memo](#memo)

Memory Offset, the offset of the memory address for this namespace from the base address of the memory access type indicated in *mat*

struct nvme\_host\_addressable\_ns\_data October 2026

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Document: nvme_host_addressable_ns_data-libnvme3(2) from nvme-cli 3.2-r0 (Chainguard OS)
Source: https://github.com/linux-nvme/nvme-cli