libnvme(2)

💫 libnvme(2) — API Manual 💫

okay bestie, welcome to the libnvme man page corner of the internet, where we read struct definitions like they're a group chat and every field is a little ✨character✨. today's main character? a log struct that's all about spinning rust and the actuators that make it go whirrrr. let's get into it 🎀

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🌸 NAME 🌸

struct nvme_rotational_media_info_log — Rotational Media Information Log

like, it's giving rotational media. it's the log that tells you how your spinning media is doing. no cap. 💅

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✨ SYNOPSIS ✨

here's the whole vibe, character for character, pls don't touch it, it's fragile:

struct nvme_rotational_media_info_log {
    __le16 endgid;
    __le16 numa;
    __le16 nrs;
    __u8 rsvd6[2];
    __le32 spinc;
    __le32 fspinc;
    __le32 ldc;
    __le32 fldc;
    __u8 rsvd24[488];
 };

look at those little __le16 and __le32 types. little endian girlies, we stan. 🫶

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👑 Members 👑

okay so this is the part where we meet every single field, one by one, no skipping, no "oh that one's boring". every member ate and every member gets their moment:

• endgid — Endurance Group Identifier. it's the ID that says which endurance group this bad boy belongs to. iykyk. 🔥
• numa — Number of Actuators. literally just how many actuators are in there. more actuators = more little arms doing the thing. 💪
• nrs — Nominal Rotational Speed. the speed it's supposed to spin at. the aspirational rotation. the main character spin. 🌈
• rsvd6 — Reserved. do not perceive it. do not touch it. it's reserved and it's thriving in its little reserved era. 🙈
• spinc — Spinup Count. how many times it has spun up. every spinup is a little glow-up. ✨
• fspinc — Failed Spinup Count. how many spinup attempts said "not today". tragic, honestly. 😭
• ldc — Load Count. how many times the heads got loaded. busy busy busy. 🍓
• fldc — Failed Load Count. how many of those didn't work out. the flop era, lowkey. 💀
• rsvd24 — Reserved. another reserved one, and yes it's a whole 488 bytes of reserved. it's quiet, it's mysterious, it's not telling us anything. we respect the privacy. 🧚

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heads up bestie: the rsvd6 and rsvd24 fields are Reserved. that means look, don't touch. don't be the person who writes into reserved space. that's not the vibe. 💜

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🌟 little sign-off 🌟

this lil page is part of the libnvme API Manual, and it's dated July 2026, filed under the name struct nvme_rotational_media_info_log alongside its libnvme(2) siblings. that's the whole page, bestie. you now know more about rotational media info than 90% of the people you'll talk to today. slay, go forth, and may all your spinups be non-failed. periodt. 💖🦋🌸