NVME_SET_FEATURES_IOCS_PROFILE(2)

✨ NAME ✨

nvme_set_features_iocs_profile — okay bestie, this one sets the I/O command set profile feature 💅 (yes, the manual name is nvme_set_features_iocs_profile(2) from the libnvme API manual, and it's giving very "queue up the NVMe vibes" energy, we love that for us).

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🎀 SYNOPSIS 🎀

int nvme_set_features_iocs_profile (int fd , __u16 iocsi , bool save );

That's the whole signature, no cap. Three little args and it's off to the races 🦋

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🌸 ARGUMENTS 🌸

• fd — the file descriptor of the nvme device, aka your lil all-access pass to the drive 🫶
• iocsi — the I/O Command Set Combination Index. That's the index, bestie, the actual number-of-the-thing 📇
• save — whether to save the value across power states, so it survives the lights going out 🔌✨ (true = it remembers, false = it's a short-term memory girlie)

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💖 RETURN 💖

So here's what you get back:

• the nvme command status if a response was received — see enum nvme_status_field for what that status is actually saying 👀
• or -1 with errno set otherwise

fr fr, check that errno when you see the -1 — it's not being mysterious on purpose, it's telling you exactly what went wrong 💀

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no SEE ALSO section on this one, we're keeping it short and iconic, periodt 👑

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and that's the whole page, bestie 🌈 This cutie lives in the libnvme API manual, dated July 2026 — tysm for reading, ily, go set some features responsibly 💜🦋✨