libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

enum nvme\_zns\_id\_ns\_ozcs - Optional Zoned Command Support

# [SYNOPSIS](#SYNOPSIS)

enum nvme\_zns\_id\_ns\_ozcs {  
**NVME\_ZNS\_ID\_NS\_OZCS\_RAZB\_SHIFT** ,  
**NVME\_ZNS\_ID\_NS\_OZCS\_RAZB\_MASK** ,  
**NVME\_ZNS\_ID\_NS\_OZCS\_ZRWASUP\_SHIFT** ,  
**NVME\_ZNS\_ID\_NS\_OZCS\_ZRWASUP\_MASK**

};

# [Constants](#Constants)

[NVME\_ZNS\_ID\_NS\_OZCS\_RAZB\_SHIFT](#NVME_ZNS_ID_NS_OZCS_RAZB_SHIFT)

Shift amount to get Read Across Zone Boundaries (RAZB)

[NVME\_ZNS\_ID\_NS\_OZCS\_RAZB\_MASK](#NVME_ZNS_ID_NS_OZCS_RAZB_MASK)

Mask to get RAZB

[NVME\_ZNS\_ID\_NS\_OZCS\_ZRWASUP\_SHIFT](#NVME_ZNS_ID_NS_OZCS_ZRWASUP_SHIFT)

Shift amount to get ZRWA Supported (ZRWASUP)

[NVME\_ZNS\_ID\_NS\_OZCS\_ZRWASUP\_MASK](#NVME_ZNS_ID_NS_OZCS_ZRWASUP_MASK)

Mask to get ZRWASUP

enum nvme\_zns\_id\_ns\_ozcs October 2026

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