NVME_SET_FEATURES_POWER_MGMT(2)

✨ NAME ✨

okay bestie, gather round, because this is nvme_set_features_power_mgmt from the libnvme API manual — and yes, it does exactly what it says on the tin: it sets the power management feature. 🎀

That's the whole vibe. Setting the power management feature on your nvme device. Slay.

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🌸 SYNOPSIS 🌸

int nvme_set_features_power_mgmt (int fd , __u8 ps , __u8 wh , bool save
, __u32 *result );

literally just one function call, five args, no drama. 💅

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🦋 ARGUMENTS 🦋

here's the rundown on everything you're passing in, no cap:

• fd — the file descriptor of your nvme device. like, the actual handle to the thing you're talking to. 🫶
• ps — the Power State. which power state, babes, that's on you to pick.
• wh — the Workload Hint. a lil nudge about what kind of work is happening. 👀
• save — Save value across power states. set it true if you want this to stick around when the power state changes. yes queen, persistence.
• result — the command completion result from CQE dword0. this is where the answer comes back to you. 📬

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💖 RETURN 💖

so what do you get back? it returns the nvme command status if a response was received — go peek at enum nvme_status_field for the deets on those.

and if no response came through? you get -1, with errno set. classic. 😭 so like, always check your errno, bestie, i'm begging.

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👑 sign-off 👑

k that's the whole page!! this one's from the libnvme situation, dated July 2026 — nvme_set_features_power_mgmt(2), section 2, as always. go forth and manage your power features responsibly. mwah. 💜✨🌙