libnvme(2)

🎀 NAME 🎀

struct nvme_persistent_event_log — the Persistent Event Log, bestie 💖

It's a whole struct, ok, and it's literally the glow-up of "what even happened on this drive". Every field is a receipt. 👑

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✨ SYNOPSIS ✨

struct nvme_persistent_event_log {
    __u8 lid;
    __u8 rsvd1[3];
    __le32 tnev;
    __le64 tll;
    __u8 rv;
    __u8 rsvd17;
    __le16 lhl;
    __le64 ts;
    __u8 poh[16];
    __le64 pcc;
    __le16 vid;
    __le16 ssvid;
    char sn[20];
    char mn[40];
    char subnqn[NVME_NQN_LENGTH];
    __le16 gen_number;
    __le32 rci;
    __u8 rsvd378[102];
    __u8 seb[32];
};

No cap, that's the whole vibe right there. Types are exactly what they are — I did not touch a single one, and neither should you. 🙅‍♀️

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💅 Members 💅

okay so let's go field by field, main character energy only:

• lid — Log Identifier. The little name tag that says which log this is. 🏷️
• rsvd1 — Reserved. Not for you, bestie. Do not touch. 🙈
• tnev — Total Number of Events. As in, how many things have happened. The drive has lore and this is the episode count. 😭
• tll — Total Log Length. The full length of the log, all of it, no skimping. 📏
• rv — Log Revision. Which version of the log we're on, like a firmware era. 🦋
• rsvd17 — Reserved. Again. Hands off. ✋
• lhl — Log Header Length. How long the header itself is. 📐
• ts — Timestamp. When it all went down. ⏰
• poh — Power on Hours. Exactly what it sounds like — hours this thing has been powered on. It's giving "uptime, but make it a personality trait". 🔥
• pcc — Power Cycle Count. How many times it's been turned off and back on again. Yes, that trick. Again. 💀
• vid — PCI Vendor ID. Who made the thing. 💳
• ssvid — PCI Subsystem Vendor ID. Who made the subsystem, which is not always the same person, iykyk. 👀
• sn — Serial Number. The birth certificate. Every drive is unique, periodt. 🎀
• mn — Model Number. The name on the label. Hi, nice to meet you. 💖
• subnqn — NVM Subsystem NVMe Qualified Name. Yes the whole name. Yes it's long. It's iconic, don't question it. 👑
• gen_number — Generation Number. The counter that goes up every time the log rolls over into a new generation. Slay, evolve. 🌈
• rci — Reporting Context Information. The context info the log is reporting with. ✨
• rsvd378 — Reserved. (Say it with me: don't. touch. it.) 🫶
• seb — Supported Events Bitmap. A whole bitmap of all the event types this thing can even do. A mood board, but for events. 🗂️

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real talk though — every rsvd field in here is reserved. You don't read meaning into it, you don't write meaning into it, you just let it exist. That's the rules. 💜

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okay bestie, that's the whole struct, every single field, nothing skipped, nothing invented. That was libnvme(2), from the API Manual, dated July 2026 — mwah, go read the source if you want more, ily, bye 🫶✨🌸