NVME_SET_FEATURES_RESV_MASK(2)

💖 nvme_set_features_resv_mask(2) 💖

okay bestie, so this is a page from the libnvme API manual, and babes, it's a short one — but it matters, so let's get into it 🫶

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✨ NAME ✨

nvme_set_features_resv_mask — Set reservation notification mask feature 👑

🌸 SYNOPSIS 🌸

int nvme_set_features_resv_mask (int fd , __u32 mask , bool save , __u32
*result );

🎀 ARGUMENTS 🎀

• fd — File descriptor of nvme device. it's literally your little ticket into the device, no fd no vibes 💅
• mask — Reservation Notification Mask Field. the actual mask you're setting, periodt
• save — Save value across power states. yes girl, make it stick ✨
• result — The command completion result from CQE dword0. that's where the answer comes back to you, iykyk

🦋 DESCRIPTION 🦋

Deprecated: doesn't support specifying a NSID. Use nvme_set_features_resv_mask2 instead.

like… it's giving legacy behavior bestie 😭 this one can't do NSID, so if you need that, go hit up nvme_set_features_resv_mask2 instead, no cap.

⭐ RETURN ⭐

The nvme command status if a response was received (see enum nvme_status_field) or -1 with errno set otherwise.

so basically: you either get the status back, or you get a sad little -1 and errno tells you what went wrong 🙈

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and that's the whole page, girlypop 💜 this was the libnvme API manual, page dated July 2026 — sending you off with love and a fully-set feature flag 🌈🎀 slay responsibly 🫶✨