libnvme(9)

💅 libnvme(9) — API Manual, bestie edition ✨

Okay so we're looking at a page from the libnvme API Manual, and today's main character is a struct. Buckle up 🎀

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🌸 NAME 🌸

struct nvme_power_on_reset_info_list — literally the Controller Reset Information struct, no cap 💖

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✨ SYNOPSIS ✨

Here's the shape of it, exact characters, don't touch a single one 🫶

struct nvme_power_on_reset_info_list {
    __le16 cid;
    __u8 fw_act;
    __u8 op_in_prog;
    __u8 rsvd4[12];
    __le32 ctrl_power_cycle;
    __le64 power_on_ml_seconds;
    __le64 ctrl_time_stamp;
 };

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🦋 Members 🦋

Bestie, let's go through the fields one by one, because every single one of them is doing its little job 🌈

• cid — the Controller ID. That's it, that's the field 👑
• fw_act — Firmware Activation. Yes queen, the firmware got activated 💫
• op_in_prog — Operation in Progress. Something's mid-crunch, hold please 🙈
• rsvd4 — Reserved. Not for us. Hands off, it's reserved for a reason 💀
• ctrl_power_cycle — Controller Power Cycle. The power-cycle counter of the controller itself ⚡
• power_on_ml_seconds — Power on milliseconds. Milliseconds, bestie, not seconds — the field name says _seconds and the description says milliseconds, and I'm just telling you exactly what it says 😭
• ctrl_time_stamp — Controller Timestamp. So it knows when 🕰️

Ngl, rsvd4 being __u8 rsvd4[12] while everything else is __le* is just the struct doing its thing — copy it exactly, don't get creative 💅

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🎀 Sign-off 🎀

This gem is from the libnvme API Manual (that's the <rainbow>libnvme(9)</rainbow> you saw up top 💜), dated October 2026, and the page footer says exactly what the header says about the struct: struct nvme_power_on_reset_info_list, libnvme(9). Slay, go reset some controllers responsibly ✨🫶🍓