libnvme(2)

✨ NAME ✨

enum nvme_mi_cwarn — it's the Controller Health Data Structure (CHDS) but make it the Critical Warning (CWARN) part 💖 this is the enum where all the "bestie, something is wrong" flags live.

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🌸 SYNOPSIS 🌸

enum nvme_mi_cwarn {
    NVME_MI_CWARN_ST ,
    NVME_MI_CWARN_TAUT ,
    NVME_MI_CWARN_RD ,
    NVME_MI_CWARN_RO ,
    NVME_MI_CWARN_VMBF

};

okay so like, five constants, no cap, each one a different flavor of "your controller is going through it" 😭

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🎀 Constants 🎀

• NVME_MI_CWARN_ST — Spare Threshold 💅 the spare blocks situation has hit the threshold and it's giving "we need to talk"
• NVME_MI_CWARN_TAUT — Temperature Above or Under Threshold 🔥 the temp went above or under the threshold — yes, both directions, she's an overachiever like that
• NVME_MI_CWARN_RD — Reliability Degraded 💀 the reliability has lowkey left the chat
• NVME_MI_CWARN_RO — Read Only 🙈 it's read-only now, the writing era is over, periodt
• NVME_MI_CWARN_VMBF — Volatile Memory Backup Failed 😭 the volatile memory backup did NOT slay, it failed

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that's the whole vibe bestie, five warning constants and not one of them is good news 💜

this was libnvme(2), the API Manual — page enum nvme_mi_cwarn, from libnvme, dated July 2026. mwah, go check your controller's health 🫶✨