libnvme(2)

💖 libnvme (2) — bestie, we're doing the API manual 💅

okay so before we even start: this is a page from the libnvme API manual, section 2, and today's main character is a struct. yes a struct. she's tiny, she's niche, and she ate. let's go 🦋

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🌸 NAME 🌸

struct nvme_mi_vpd_tra — Vital Product Data Topology MultiRecord ✨

like. the name is the whole personality. it's a VPD (Vital Product Data) thing, specifically the Topology MultiRecord vibe. say it with your chest: nvme_mi_vpd_tra. iconic.

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✨ SYNOPSIS ✨

here's the whole shape of her, no cap:

struct nvme_mi_vpd_tra {
    __u8 vn;
    __u8 rsvd6;
    __u8 ec;
    struct nvme_mi_vpd_telem elems[0];
 };

so it's a struct with three little __u8 fields and then an array of struct nvme_mi_vpd_telem called elems with a [0] size. that's it. that's the girl. 🎀

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👑 Members 👑

four fields, bestie, and every single one matters. no skipping, I don't do that.

• vn — Version Number 💜 literally the version number. that's the whole job. she tells you what version this is.
• rsvd6 — Reserved 🙈 she's reserved. as in, hands off, not for you, she's sitting there being padding and looking pretty. do not touch.
• ec — Element Count 🔥 the count of elements. how many. a number. obsessed with her efficiency honestly.
• elems — Element Descriptor 🌈 this one is the struct nvme_mi_vpd_telem elems[0]; situation — the flexible-array-friend at the end of the struct, holding all the element descriptors. she's last in the struct for a reason and the reason is layout. iykyk. 🧚

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💀 okay so heads up, this is a C struct in an API manual. if you're out here reading this page you're probably deep in kernel-adjacent NVMe-over-MI land, and honestly? respect. 🫶

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⭐ a lil sign-off ⭐

this page came out in July 2026, it's the struct nvme_mi_vpd_tra page from the libnvme(2) API Manual, and yeah — that's the whole vibe. go forth and respect the rsvd6 (she's reserved, bestie, i said what i said 💅). bye mwah 💖🌸✨