nvme_lm_cdq(2)

✨ nvme_lm_cdq — bestie edition ✨

okay so this is a page from the libnvme API manual, and it's all about nvme_lm_cdq, the Controller Data Queue command. yes, it's short. no, that doesn't make it less iconic. let's get into it 💖

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💫 NAME 💫

nvme_lm_cdq — Controller Data Queue, aka the Controller Data Queue command. that's the whole name, that's the whole vibe 🦋

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🌸 SYNOPSIS 🌸

int nvme_lm_cdq (struct nvme_lm_cdq_args *args );

like… one function. one pointer. so clean. so minimal. she ate 💅

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🎀 ARGUMENTS 🎀

• args — a struct nvme_lm_cdq_args argument structure. literally just the args struct, that's it, that's the whole input. hand her the struct and she does her thing 🫶

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🔥 RETURN 🔥

so here's what you get back, and this matters, don't skip it:

• if a response was received, you get the nvme command status — check enum nvme_status_field for what those values actually mean 👑
• otherwise you get -1 and errno gets set. so like, check errno, bestie, it's trying to tell you something 😭

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🌈 sign-off 🌈

this whole thing lives in libnvme, dated July 2026, and yes — the page is literally called nvme_lm_cdq, section (2), just like the header says at the top and the footer says at the bottom. circular? maybe. iconic? absolutely. periodt 🎀✨