libnvme(9)

💖 NAME 💖

struct nvme_capacity_mgmt_args — bestie, this is literally the arguments struct for the NVMe Capacity Management command 🎀

okay so quick vibe check: this is a page from the libnvme API Manual, section 9, and it's all about one lil struct that carries everything the Capacity Management command needs. she's giving ✨data carrier✨ energy and we're obsessed 💅

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✨ SYNOPSIS ✨

struct nvme_capacity_mgmt_args {
    __u32 *result;
    int args_size;
    int fd;
    __u32 timeout;
    __u32 cdw11;
    __u32 cdw12;
    __u16 element_id;
    __u8 op;
 };

no cap, that's the whole thing. every field, every type, exactly as it lives. 🫶

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🦋 Members 🦋

okay so let's meet the cast, one field at a time, main character energy only 💜

• result — if everything goes well, this is where the CQE dword0 value lands. she's the payoff field fr fr 🌸
• args_size — the size of struct nvme_capacity_mgmt_args. it's giving "know thyself" but make it bytecount 📏
• fd — the file descriptor of the nvme device. your lil doorway to the hardware, slay 🚪✨
• timeout — timeout in ms. patience is a virtue and this field measures it ⏳
• cdw11 — the least significant 32 bits of the capacity in bytes of the Endurance Group or NVM Set to be created. lowkey the bottom half 🧚
• cdw12 — the most significant 32 bits of the capacity in bytes of the Endurance Group or NVM Set to be created. highkey the top half 👑
• element_id — a value specific to the value of the Operation field. it's giving "depends on op, iykyk" 🙈
• op — the operation to be performed by the controller. this is the "what are we even doing here" field and honestly? iconic 💅

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heads up bestie: cdw11 and cdw12 are a pair — least significant 32 bits and most significant 32 bits of the same capacity value. don't split them up, they're a package deal 💖

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and that's the whole page, no skips, no summaries, every field accounted for 🌈

kisses, this was libnvme(9) — struct nvme_capacity_mgmt_args, API Manual — dated August 2026. byeeee, go manage some capacity bestie 🎀💖✨