libnvme(2)

💖 NAME 💖

okay bestie, gather round — this page lives in the libnvme(2) API Manual, and what it's giving you is:

enum nvme_io_opcode — the Opcodes for I/O Commands

that's it, that's the whole vibe: one enum, twenty members, zero chill. it's the master list of every I/O command opcode nvme knows about, and we're gonna go through every single one together, no skipping, no scrolling past. 🫶

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🦋 SYNOPSIS 🦋

here's the whole thing in its natural habitat, copy-paste ready, not a single member changed:

enum nvme_io_opcode {
    nvme_cmd_flush ,
    nvme_cmd_write ,
    nvme_cmd_read ,
    nvme_cmd_write_uncor ,
    nvme_cmd_compare ,
    nvme_cmd_write_zeroes ,
    nvme_cmd_dsm ,
    nvme_cmd_verify ,
    nvme_cmd_resv_register ,
    nvme_cmd_resv_report ,
    nvme_cmd_resv_acquire ,
    nvme_cmd_io_mgmt_recv ,
    nvme_cmd_resv_release ,
    nvme_cmd_cancel ,
    nvme_cmd_copy ,
    nvme_cmd_io_mgmt_send ,
    nvme_zns_cmd_mgmt_send ,
    nvme_zns_cmd_mgmt_recv ,
    nvme_zns_cmd_append ,
    nvme_cmd_fabric

};

yes, there's a lil blank line before the closing brace, and yes, we're keeping it. character for character, bestie. 💅 the way that last blank line is just sitting there is honestly so real of it.

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✨ Constants ✨

and now the moment you've all been waiting for — the official roll call. twenty members, in order, with what each one is called. 👑

• nvme_cmd_flush — Flush 🌊
• nvme_cmd_write — Write ✍️
• nvme_cmd_read — Read 📖
• nvme_cmd_write_uncor — Write Uncorrectable 🔥
• nvme_cmd_compare — Compare ⚖️
• nvme_cmd_write_zeroes — write Zeros 🫥 (the page genuinely writes it lowercase as "write Zeros" and we are NOT fixing it, we're respecting the author's choices)
• nvme_cmd_dsm — Dataset Management 🗂️
• nvme_cmd_verify — Verify ✅
• nvme_cmd_resv_register — Reservation Register 📝
• nvme_cmd_resv_report — Reservation Report 📋
• nvme_cmd_resv_acquire — Reservation Acquire 🔒
• nvme_cmd_io_mgmt_recv — I/O Management Receive 📥
• nvme_cmd_resv_release — Reservation Release 🔓
• nvme_cmd_cancel — Cancel 🚫
• nvme_cmd_copy — Copy 📄
• nvme_cmd_io_mgmt_send — I/O Management Send 📤
• nvme_zns_cmd_mgmt_send — Zone Management Send 🧚
• nvme_zns_cmd_mgmt_recv — Zone Management Receive 🧚
• nvme_zns_cmd_append — Zone Append ➕
• nvme_cmd_fabric — Fabric Commands 🧵

heads up bestie: that's all the information this page gives you. no defaults, no return values, no error codes, no signals, no environment variables, no SEE ALSO — just the enum and these descriptions. so don't go inventing behaviour for any of these bad boys. if you need the actual semantics, that's a different page's problem. 🙈

also notice the naming switch-up, iykyk: the first chunk is all nvme_cmd_*, and then four of them — nvme_zns_cmd_mgmt_send, nvme_zns_cmd_mgmt_recv, nvme_zns_cmd_append — come in as nvme_zns_cmd_* instead, then nvme_cmd_fabric brings us right back home. the way it just switches prefixes mid-enum like that? main character energy. periodt. 🌈

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and that's the whole page, gorgeous. 💖 twenty opcodes, fully accounted for, nothing skipped, nothing invented, vibe check passed with flying colours. go forth and reference your enum members responsibly. 🎀

this has been enum nvme_io_opcode from the libnvme(2) manual — dated July 2026, which is literally so futuristic of it — signing off, mwah, slay, eat your veggies, #include your headers. 🌸🫶⭐