libnvme(9)

🎀 NAME 🎀

okay bestie, so this whole page is about one thing and one thing only: enum nvme_mi_chscf — the Controller Health Data Structure (CHDS) → Controller Health Status Changed Flags (CHSCF). that's it, that's the icon. it's a set of flags that tell you what changed about a controller's health. lowkey important, highkey underrated 💅

✨ SYNOPSIS ✨

here's the whole enum, exactly as it lives, no cap — don't let the blank line before the closing brace jump-scare you, it's part of the vibe:

enum nvme_mi_chscf {
    NVME_MI_CHSCF_RDYF ,
    NVME_MI_CHSCF_CFSF ,
    NVME_MI_CHSCF_SHSTF ,
    NVME_MI_CHSCF_NSSROF ,
    NVME_MI_CHSCF_CECOF ,
    NVME_MI_CHSCF_NACF ,
    NVME_MI_CHSCF_FAF ,
    NVME_MI_CHSCF_CSF ,
    NVME_MI_CHSCF_CTEMPF ,
    NVME_MI_CHSCF_PDLUF ,
    NVME_MI_CHSCF_SPAREF ,
    NVME_MI_CHSCF_CWARNF ,
    NVME_MI_CHSCF_TCIDAF

};

🌸 Constants 🌸

okay so there are thirteen of these bad boys and every single one is a different "something changed" flag. collecting them like Pokémon fr fr 🫶

• NVME_MI_CHSCF_RDYF — Ready Flag. it's giving "we are so ready" ✨
• NVME_MI_CHSCF_CFSF — Controller Fatal Status Flag. yeah… fatal. not the cute kind of drama 😭
• NVME_MI_CHSCF_SHSTF — Shutdown Status Flag. the controller's shutdown situation changed 🫡
• NVME_MI_CHSCF_NSSROF — NVM Subsystem Reset Occurred Flag. a reset happened. it's literally in the name bestie 🔄
• NVME_MI_CHSCF_CECOF — Controller Enable Change Occurred Flag. the enable state moved, and the flag is here to announce it 👑
• NVME_MI_CHSCF_NACF — Namespace Attribute Changed Flag. attributes? changed. the namespaces are having a moment 💫
• NVME_MI_CHSCF_FAF — Firmware Activated Flag. firmware said "I'm active now" and honestly? main character energy 🔥
• NVME_MI_CHSCF_CSF — Controller Status Change Flag. status: changed. that's the whole tweet 🐦
• NVME_MI_CHSCF_CTEMPF — Composite Temperature Change Flag. the temp shifted, keep an eye on it 🌡️
• NVME_MI_CHSCF_PDLUF — Percentage Drive Life Used Flag. your drive's life-used percentage ticked up, the slow march of time fr fr 💀
• NVME_MI_CHSCF_SPAREF — Available Spare Flag. spare availability changed — noted, bestie 🍓
• NVME_MI_CHSCF_CWARNF — Critical Warning Flag. CRITICAL. WARNING. red flag in the literal sense, please look at it 🚩
• NVME_MI_CHSCF_TCIDAF — Telemetry Controller-Initiated Data Available Flag. telemetry data (controller-initiated) is available — go get it, it's yours now 🧚

okay real talk: these are just flags telling you something changed. the page doesn't say any of them are errors or that you should panic — so don't invent drama where there isn't any. the only one wearing a red flag emoji is NVME_MI_CHSCF_CWARNF because, well, "Critical Warning", and even then: it's a change notification 💅

and that's the whole page, no filler, no fluff 🦋

cute lil sign-off: this slice of API Manual realness is from libnvme(9), dated October 2026 — screenshot it, cite it, cite it again, periodt 💖 🌈 ⭐