libnvme(9)

🌸 NAME 🌸

okay so bestie, gather round — this is the libnvme API manual page for enum nvme_flbas, and it's literally the field that tells you the formatted LBA size. that's it. that's the whole vibe. 💅

✨ SYNOPSIS ✨

here's the whole enum, copied exactly, no cap, character for character:

enum nvme_flbas {
    NVME_FLBAS_LOWER_SHIFT ,
    NVME_FLBAS_META_EXT_SHIFT ,
    NVME_FLBAS_HIGHER_SHIFT ,
    NVME_FLBAS_LOWER_MASK ,
    NVME_FLBAS_META_EXT_MASK ,
    NVME_FLBAS_HIGHER_MASK

};

six members, zero drama (well, okay, a little drama — it's giving "shifts and masks living in the same enum" energy 🦋).

🎀 CONSTANTS 🎀

okay this is the part where we meet the cast. each one is a constant inside enum nvme_flbas, and here's what each one does:

• NVME_FLBAS_LOWER_SHIFT — the shift amount you use to pull out the format index's least significant 4 bits. yes, four bits. not three, not five. four. ✨
• NVME_FLBAS_META_EXT_SHIFT — the shift amount to get the metadata transferred. that's the whole description, bestie, it's succinct and iconic.
• NVME_FLBAS_HIGHER_SHIFT — shift amount for the format index's most significant 2 bits. two bits. the higher ones. main character energy for real 👑
• NVME_FLBAS_LOWER_MASK — the mask that gets you the format index's least significant 4 bits. mask not shift, okay? don't mix them up, i'm begging 🙈
• NVME_FLBAS_META_EXT_MASK — the mask to get the metadata transferred. same deal as its shift buddy, different tool.
• NVME_FLBAS_HIGHER_MASK — the mask for the format index's most significant 2 bits. masking > guessing, fr fr.

ngl the pattern here is chef's kiss: LOWER = 4 bits, HIGHER = 2 bits, META_EXT = metadata transferred. shifts to move it, masks to grab it. slay. 💅

and that's the whole page! no leftovers, no secret options hiding in the back. 🫶

this little cutie came from the API Manual — libnvme(9), dated October 2026. consider yourself fully briefed, bestie. mwah. 💖🎀🦋🌸⭐