libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

struct nvme\_host\_metadata - Host Metadata Data Structure

# [SYNOPSIS](#SYNOPSIS)

struct nvme\_host\_metadata {  
**\_\_u8 ndesc;**  
**\_\_u8 rsvd1;**  
**union {**  
**struct nvme\_metadata\_element\_desc descs\[0];**  
**\_\_u8 descs\_buf\[4094];**  
**};**  
};

# [Members](#Members)

[ndesc](#ndesc)

Number of metadata element descriptors

[rsvd1](#rsvd1)

Reserved

{unnamed\_union}

anonymous

[descs](#descs)

Metadata element descriptors

[descs\_buf](#descs_buf)

Metadata element descriptor buffer

struct nvme\_host\_metadata October 2026

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