nvme_get_fe..._volatile_wc(2)

✨ nvme_get_features_volatile_wc ✨

okay bestie, welcome to the libnvme API manual, section 2 💖 this one's called nvme_get_features_volatile_wc and it is here to spill all the tea about your drive's volatile write cache feature 🌸

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🎀 NAME 🎀

nvme_get_features_volatile_wc — get that volatile write cache feature, periodt 💅

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🦋 SYNOPSIS 🦋

int nvme_get_features_volatile_wc (int fd , enum nvme_get_features_sel
sel , __u32 *result );

like. three things. that's it. she's lowkey simple and we love her for it 🫶

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🌈 ARGUMENTS 🌈

• fd — the file descriptor of your nvme device. your lil handle to the drive, your VIP pass, the whole vibe 💫
• sel — selects which type of attribute to return. go check enum nvme_get_features_sel for the menu of options, iykyk 👑
• result — the command completion result straight outta CQE dword0. yes literally that dword, no cap 📮

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💜 RETURN 💜

bestie here's the deal: you get the nvme command status if a response actually came back (peep enum nvme_status_field for the full list of what those statuses mean) 💅

and if not?? you get -1 with errno set. that's the ✨ otherwise ✨ case. not her finest moment but okay 😭

fr fr, -1 is not a vibe — always go read errno if you land there, don't just sit with the sadness 🙈

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that's the whole page, no filler, no fluff, we ate 🍓 stay obsessed, go fetch those features, and remember: your write cache is volatile, so is the drama 🧚

July 2026 energy forever, brought to you by the libnvme API manual — mwah, love u, bye 💖✨🎀🦋