libnvme(2)

✨ NAME ✨

okay so bestie, welcome to libnvme(2) — the API manual, section 2, and today's main character is:

enum nvme_id_ctrl_oaes — Optional Asynchronous Events Supported 💖

like. it's the enum that tells you which optional async events your NVMe controller is vibing with. no cap.

---

🌸 SYNOPSIS 🌸

enum nvme_id_ctrl_oaes {
    NVME_CTRL_OAES_NA_SHIFT ,
    NVME_CTRL_OAES_FA_SHIFT ,
    NVME_CTRL_OAES_ANA_SHIFT ,
    NVME_CTRL_OAES_PLEA_SHIFT ,
    NVME_CTRL_OAES_LBAS_SHIFT ,
    NVME_CTRL_OAES_EGE_SHIFT ,
    NVME_CTRL_OAES_NS_SHIFT ,
    NVME_CTRL_OAES_TTH_SHIFT ,
    NVME_CTRL_OAES_RGCNS_SHIFT ,
    NVME_CTRL_OAES_ANSAN_SHIFT ,
    NVME_CTRL_OAES_ZD_SHIFT ,
    NVME_CTRL_OAES_DL_SHIFT ,
    NVME_CTRL_OAES_NA_MASK ,
    NVME_CTRL_OAES_FA_MASK ,
    NVME_CTRL_OAES_ANA_MASK ,
    NVME_CTRL_OAES_PLEA_MASK ,
    NVME_CTRL_OAES_LBAS_MASK ,
    NVME_CTRL_OAES_EGE_MASK ,
    NVME_CTRL_OAES_NS_MASK ,
    NVME_CTRL_OAES_TTH_MASK ,
    NVME_CTRL_OAES_RGCNS_MASK ,
    NVME_CTRL_OAES_ANSAN_MASK ,
    NVME_CTRL_OAES_ZD_MASK ,
    NVME_CTRL_OAES_DL_MASK ,
    NVME_CTRL_OAES_NA ,
    NVME_CTRL_OAES_FA ,
    NVME_CTRL_OAES_ANA ,
    NVME_CTRL_OAES_PLEA ,
    NVME_CTRL_OAES_LBAS ,
    NVME_CTRL_OAES_EGE ,
    NVME_CTRL_OAES_NS ,
    NVME_CTRL_OAES_TTH ,
    NVME_CTRL_OAES_RGCNS ,
    NVME_CTRL_OAES_ANSAN ,
    NVME_CTRL_OAES_ZD ,
    NVME_CTRL_OAES_DL

};

like, look at her. thirty-six constants, three flavours, one icon 💅

---

🎀 Constants 🎀

💫 the _SHIFT girlies (shift amounts)

these are the shift amounts, bestie — how far you gotta slide over to peek at whether each event is supported 🦋

• NVME_CTRL_OAES_NA_SHIFT — shift amount to get the Namespace Attribute Notices event supported
• NVME_CTRL_OAES_FA_SHIFT — shift amount to get the Firmware Activation Notices event supported
• NVME_CTRL_OAES_ANA_SHIFT — shift amount to get the ANA Change Notices supported
• NVME_CTRL_OAES_PLEA_SHIFT — shift amount to get the Predictable Latency Event Aggregate Log Change Notices event supported
• NVME_CTRL_OAES_LBAS_SHIFT — shift amount to get the LBA Status Information Notices event supported
• NVME_CTRL_OAES_EGE_SHIFT — shift amount to get the Endurance Group Events Aggregate Log Change Notices event supported
• NVME_CTRL_OAES_NS_SHIFT — shift amount to get the Normal NVM Subsystem Shutdown event supported
• NVME_CTRL_OAES_TTH_SHIFT — shift amount to get the Temperature Threshold Hysteresis Recovery event supported
• NVME_CTRL_OAES_RGCNS_SHIFT — shift amount to get the Reachability Groups Change Notices supported
• NVME_CTRL_OAES_ANSAN_SHIFT — shift amount to get the Allocated Namespace Attribute Notices supported
• NVME_CTRL_OAES_ZD_SHIFT — shift amount to get the Zone Descriptor Change Notifications supported
• NVME_CTRL_OAES_DL_SHIFT — shift amount to get the Discover Log Page Change Notifications supported

---

🌈 the _MASK era (mask values)

and these are the masks — swipe right to isolate the bit and find out if it's supported ✨

• NVME_CTRL_OAES_NA_MASK — mask to get the Namespace Attribute Notices event supported
• NVME_CTRL_OAES_FA_MASK — mask to get the Firmware Activation Notices event supported
• NVME_CTRL_OAES_ANA_MASK — mask to get the ANA Change Notices supported
• NVME_CTRL_OAES_PLEA_MASK — mask to get the Predictable Latency Event Aggregate Log Change Notices event supported
• NVME_CTRL_OAES_LBAS_MASK — mask to get the LBA Status Information Notices event supported
• NVME_CTRL_OAES_EGE_MASK — mask to get the Endurance Group Events Aggregate Log Change Notices event supported
• NVME_CTRL_OAES_NS_MASK — mask to get the Normal NVM Subsystem Shutdown event supported
• NVME_CTRL_OAES_TTH_MASK — mask to get the Temperature Threshold Hysteresis Recovery event supported
• NVME_CTRL_OAES_RGCNS_MASK — mask to get the Reachability Groups Change Notices supported
• NVME_CTRL_OAES_ANSAN_MASK — mask to get the Allocated Namespace Attribute Notices supported
• NVME_CTRL_OAES_ZD_MASK — mask to get the Zone Descriptor Change Notifications supported
• NVME_CTRL_OAES_DL_MASK — mask to get the Discover Log Page Change Notifications supported

---

👑 the plain ones (the actual supported events)

no shift, no mask, just the vibes. each one = that event is supported 🫶

• NVME_CTRL_OAES_NA — Namespace Attribute Notices event supported
• NVME_CTRL_OAES_FA — Firmware Activation Notices event supported
• NVME_CTRL_OAES_ANA — ANA Change Notices supported
• NVME_CTRL_OAES_PLEA — Predictable Latency Event Aggregate Log Change Notices event supported
• NVME_CTRL_OAES_LBAS — LBA Status Information Notices event supported
• NVME_CTRL_OAES_EGE — Endurance Group Events Aggregate Log Change Notices event supported
• NVME_CTRL_OAES_NS — Normal NVM Subsystem Shutdown event supported
• NVME_CTRL_OAES_TTH — Temperature Threshold Hysteresis Recovery event supported
• NVME_CTRL_OAES_RGCNS — Reachability Groups Change Notices supported
• NVME_CTRL_OAES_ANSAN — Allocated Namespace Attribute Notices supported
• NVME_CTRL_OAES_ZD — Zone Descriptor Change Notifications supported
• NVME_CTRL_OAES_DL — Discover Log Page Change Notifications supported

---

bestie reminder: all of these are optional async events, hence the "OAES" in the name. the controller tells you which ones it's down for, and you go from there. 💖

---

and that's the whole page, periodt 🎀 this was enum nvme_id_ctrl_oaes from the libnvme(2) API Manual, dated July 2026, written up by your girl with love. mwah 💅✨