libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

enum nvme\_id\_ns\_kpios - Key Per I/O Status

# [SYNOPSIS](#SYNOPSIS)

enum nvme\_id\_ns\_kpios {  
**NVME\_NS\_KPIOS\_KPIOENS\_SHIFT** ,  
**NVME\_NS\_KPIOS\_KPIOENS\_MASK** ,  
**NVME\_NS\_KPIOS\_KPIOSNS\_SHIFT** ,  
**NVME\_NS\_KPIOS\_KPIOSNS\_MASK**

};

# [Constants](#Constants)

[NVME\_NS\_KPIOS\_KPIOENS\_SHIFT](#NVME_NS_KPIOS_KPIOENS_SHIFT)

Shift amount to get Key Per I/O Enabled in Namespace from the *struct nvme\_id\_ns*.kpios field.

[NVME\_NS\_KPIOS\_KPIOENS\_MASK](#NVME_NS_KPIOS_KPIOENS_MASK)

Mask to get Key Per I/O Enabled in Namespace from the *struct nvme\_id\_ns*.kpios field.

[NVME\_NS\_KPIOS\_KPIOSNS\_SHIFT](#NVME_NS_KPIOS_KPIOSNS_SHIFT)

Shift amount to get Key Per I/O Supported in Namespace from the *struct nvme\_id\_ns*.kpios field.

[NVME\_NS\_KPIOS\_KPIOSNS\_MASK](#NVME_NS_KPIOS_KPIOSNS_MASK)

Mask to get Key Per I/O Supported in Namespace from the *struct nvme\_id\_ns*.kpios field.

enum nvme\_id\_ns\_kpios October 2026

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Document: nvme_id_ns_kpios-libnvme3(2) from nvme-cli 3.2-r0 (Chainguard OS)
Source: https://github.com/linux-nvme/nvme-cli