libnvme(9)

💖 libnvme(9) 💖

okay so bestie, welcome to the API Manual for libnvme — that's the manual name btw, we're in section 9, the kernel/API girlies section, iykyk. and today's main character is an enum. yes an enum. it's giving "small but mighty" and honestly? obsessed. 🫶

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✨ NAME ✨

enum nvme_mi_ccsf — NVM Subsystem Health Data Structure (NSHDS) — Composite Controller Status Flags (CCSF)

like, that's a lot of acronyms in one breath but basically it's the Composite Controller Status Flags, living inside the NVM Subsystem Health Data Structure (NSHDS). she's the vibe check for your controller's health, fr fr. 💅

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🌸 SYNOPSIS 🌸

enum nvme_mi_ccsf {
    NVME_MI_CCSF_RDYF ,
    NVME_MI_CCSF_CFSF ,
    NVME_MI_CCSF_SHSTF ,
    NVME_MI_CCSF_NSSROF ,
    NVME_MI_CCSF_CECOF ,
    NVME_MI_CCSF_NACF ,
    NVME_MI_CCSF_FAF ,
    NVME_MI_CCSF_CSF ,
    NVME_MI_CCSF_CTEMPF ,
    NVME_MI_CCSF_PDLUF ,
    NVME_MI_CCSF_SPAREF ,
    NVME_MI_CCSF_CWARNF ,
    NVME_MI_CCSF_TCIDAF

};

thirteen flags. thirteen little icons in the group chat, each one telling you something diff about the state of your controller. 👑

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🦋 Constants 🦋

bestie these are the actual members, and yes every single one matters, no skipping:

• NVME_MI_CCSF_RDYF — Ready Flag 🌈 is the controller ready? that's the whole vibe of this one.
• NVME_MI_CCSF_CFSF — Controller Fatal Status Flag 💀 fatal. as in, not a drill.
• NVME_MI_CCSF_SHSTF — Shutdown Status Flag 🚪 tells you where things stand with shutdown.
• NVME_MI_CCSF_NSSROF — NVM Subsystem Reset Occurred Flag 🔄 a subsystem reset happened, and this flag remembers it.
• NVME_MI_CCSF_CECOF — Controller Enable Change Occurred Flag ⚡ the controller's enable state changed — noted.
• NVME_MI_CCSF_NACF — Namespace Attribute Changed Flag 🗂️ namespace attributes got a lil glow-up (or any change tbh).
• NVME_MI_CCSF_FAF — Firmware Activated Flag 🧚 new firmware is live and activated, slay.
• NVME_MI_CCSF_CSF — Controller Status Change Flag 📢 controller status changed, look alive.
• NVME_MI_CCSF_CTEMPF — Composite Temperature Change Flag 🌡️ the composite temp shifted, keep an eye on her.
• NVME_MI_CCSF_PDLUF — Percentage Drive Life Used Flag 📉 your drive-life-used percentage updated — she's aging, we love her anyway.
• NVME_MI_CCSF_SPAREF — Available Spare Flag 🍓 spare capacity info changed, always good to know.
• NVME_MI_CCSF_CWARNF — Critical Warning Flag 🚨 critical warning. yes ma'am, pay attention.
• NVME_MI_CCSF_TCIDAF — Telemetry Controller-Initiated Data Available Flag 🔭 the controller has telemetry data ready for you — go get it bestie.

ngl, a couple of these names are giving "I was named by a committee of engineers" (because they were), but every single one is a real flag with a real meaning, so treat them with respect. 💖

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and that's the whole page!! short, sweet, iconique. this was the enum nvme_mi_ccsf page, written October 2026, part of libnvme section 9 — the API Manual. mwah, go read your controller's flags, ily, bye! 🎀✨💜