libnvme(9)

📦 version 3.2, in arch rolling

💅 libnvme(9) — bestie edition 🎀

Okay so real talk, this page lives in the libnvme API manual, and it's literally all about one little enum that tells you what a controller can do with Device Self-test stuff. It's giving "tiny but mighty," and honestly? Iconic. Let's get into it. ✨

🌸 NAME 🌸

enum nvme_id_ctrl_dsto — the flags that say which optional Device Self-test command behaviors and operation behaviors the controller or NVM subsystem supports. That's the whole vibe. 💖

No cap, it's just a bundle of constants describing what your hardware is willing to do.

🦋 SYNOPSIS 🦋

enum nvme_id_ctrl_dsto {
    NVME_CTRL_DSTO_SDSO_SHIFT ,
    NVME_CTRL_DSTO_HIRS_SHIFT ,
    NVME_CTRL_DSTO_SDSO_MASK ,
    NVME_CTRL_DSTO_HIRS_MASK ,
    NVME_CTRL_DSTO_ONE_DST ,
    NVME_CTRL_DSTO_HIRS

};

Look at her. Six constants. Flawless. Periodt. 👑

✨ Constants ✨

  • NVME_CTRL_DSTO_SDSO_SHIFT — the shift amount you use to pull the value of Single Device Self-test Operation out of the Device Self-test Options field. Like, shift it and slay. 🫶
  • NVME_CTRL_DSTO_HIRS_SHIFT — the shift amount to get the value of Host-Initiated Refresh Support out of that same Device Self-test Options field. Two shifts, two besties, same field. 💫
  • NVME_CTRL_DSTO_SDSO_MASK — the mask that gets you the value of Single Device Self-test Operation. Mask on, facts intact. 🙈
  • NVME_CTRL_DSTO_HIRS_MASK — the mask for the value of Host-Initiated Refresh Support. Pop it on, read your bits. 💅
  • NVME_CTRL_DSTO_ONE_DST — okay this one's a whole mood: if it's set, then the NVM subsystem supports only one device self-test operation in progress at a time. If it's cleared, then the NVM subsystem supports one device self-test operation per controller at a time. So it's either one globally or one per controller — read the bit before you assume, bestie. 👀
  • NVME_CTRL_DSTO_HIRS — if it's set, then the controller supports the Host-Initiated Refresh capability. That's it, that's the flag. 🔥
Little vibe check: NVME_CTRL_DSTO_ONE_DST is the only one with a real conditional attached — set means one at a time for the whole subsystem, cleared means one per controller. Don't mix those up, iykyk. 💀

And that's the page, bestie! 🌈 This little glow-up comes from the libnvme API manual — enum nvme_id_ctrl_dsto — dated October 2026. Mwah, go read your bits responsibly. 💜🎀🦋

📦 where this page comes from