nvme_set_features_rrl(2)

💖 nvme_set_features_rrl — libnvme API manual, bestie edition 💖

okay so you're here because you wanna talk to the Read Recovery Level feature on your NVMe device?? slay. this is the libnvme girlie nvme_set_features_rrl, sliding into your C program's DMs. no cap, it's giving "I just want to set one little feature, why is there a whole syscall in my life" energy, and honestly? iconic. let's get into it ✨

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🌸 NAME 🌸

nvme_set_features_rrl — Set read recovery level feature 🔥

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🦋 SYNOPSIS 🦋

int nvme_set_features_rrl (int fd , __u8 rrl , __u16 nvmsetid , bool
save , __u32 *result );

like yes bestie it's a function signature, don't panic, we're gonna walk through every single one of those lil guys 🫶

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🎀 ARGUMENTS 🎀

• fd — File descriptor of nvme device. it's your ticket to the party, the lil int that says "yes hi this is my drive" 💅
• rrl — Read recovery level setting. this is the actual vibe you're setting — it's a __u8, so keep it smol 🌸
• nvmsetid — NVM set id. a __u16, for when your drive is doing that fancy multi-set thing ✨
• save — Save value across power states. it's a bool!! set it and your setting survives a reboot, set it not and... well. it doesn't. main character decision, your call 👑
• result — The command completion result from CQE dword0. a __u32 *, pointer bestie, so make sure you pass something real to point at, not vibes 🙈

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⭐ RETURN ⭐

The <rainbow>nvme command status</rainbow> if a response was received — peek at enum nvme_status_field for the whole taxonomy of possible moods, iykyk — or -1 with errno set otherwise. yes, the classic "-1 and check errno" duet, they never miss 💀

fr fr bestie: if you get -1, do NOT just move on. check that errno. it is LITERALLY trying to tell you something and you're ignoring it. rude. 😭

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🌈 the cute lil sign-off 🌈

this page was living under the libnvme API manual banner in the month of July 2026, answering to the name nvme_set_features_rrl (page 2, section 2, she's a (2) girlie), and that's the whole tea, no cap, go set your read recovery level bestie 💜🧚🍓