.TH "libnvme" 2 "enum nvme_ns_id_desc_nidt" "February 2024" "API Manual" LINUX .SH NAME enum nvme_ns_id_desc_nidt \- Known namespace identifier types .SH SYNOPSIS enum nvme_ns_id_desc_nidt { .br .BI " NVME_NIDT_EUI64" , .br .br .BI " NVME_NIDT_NGUID" , .br .br .BI " NVME_NIDT_UUID" , .br .br .BI " NVME_NIDT_CSI" }; .SH Constants .IP "NVME_NIDT_EUI64" 12 IEEE Extended Unique Identifier, the NID field contains a copy of the EUI64 field in the struct nvme_id_ns.eui64. .IP "NVME_NIDT_NGUID" 12 Namespace Globally Unique Identifier, the NID field contains a copy of the NGUID field in struct nvme_id_ns.nguid. .IP "NVME_NIDT_UUID" 12 The NID field contains a 128-bit Universally Unique Identifier (UUID) as specified in RFC 4122. .IP "NVME_NIDT_CSI" 12 The NID field contains the command set identifier.