libnvme(2)

💖 libnvme(2) — the API manual, but make it a vibe ✨

okay bestie, welcome to libnvme(2), the API manual itself, and today's main character is a struct. yes a struct. and she is serving.

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🌸 NAME 🌸

struct nvme_nvm_id_ns — the NVME Command Set I/O Command Set Specific Identify Namespace Data Structure. that's her full legal name. she's a big deal. 💅

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🦋 SYNOPSIS 🦋

here's the whole thing, verbatim, no edits, no notes, we do not touch the code:

struct nvme_nvm_id_ns {
    __le64 lbstm;
    __u8 pic;
    __u8 pifa;
    __u8 rsvd10[2];
    __le32 elbaf[64];
    __le32 npdgl;
    __le32 nprg;
    __le32 npra;
    __le32 nors;
    __le32 npdal;
    __le32 lbapss;
    __le32 tlbaag;
    __u8 rsvd296[3800];
 };

not me counting the bytes in rsvd296[3800]... she's got a lot of reserved space and honestly, relatable. the padding is the personality. 😭✨

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👑 Members 👑

field-by-field, one by one, no skips, no shortcuts, we respect the whole lineup 🫶

• lbstm — Logical Block Storage Tag Mask. it's the mask, bestie, it masks. 🎀
• pic — Protection Information Capabilities. what she's capable of. iconic behavior.
• pifa — Protection Information Format Attribute. the format attribute of the protection info, as promised. 🌸
• rsvd10 — Reserved. she's reserved. give her space. 🙈
• elbaf — List of Extended LBA Format Support. a whole list, [64] wide, very much a group chat. 💜
• npdgl — Namespace Preferred Deallocate Granularity Large. yes "Large" is part of the name, don't @ me.
• nprg — Namespace Preferred Read Granularity.
• npra — Namespace Preferred Read Alignment.
• nors — Namespace Optimal Read Size. optimal! she said optimal! 👑
• npdal — Namespace Preferred Deallocate Alignment Large. again with the Large. we love a consistent queen.
• lbapss — LBA Format Placement Shard Size. shard. size. say it with me. ✨
• tlbaag — Tracked LBA Allocation Granularity.
• rsvd296 — Reserved. and there is so much of it ([3800]), she's just out here holding space for the future. 🌈

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lowkey a reminder: rsvd10 and rsvd296 are Reserved — no cap, don't go writing your own little secrets in there, that's not the move. 💀

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and that's the whole page, bestie — every member, every byte count, every default, all of it, untouched. this was struct nvme_nvm_id_ns, from the libnvme API manual, dated July 2026. periodt. 💖✨🎀🦋🌸💅🫶