NVMe multipath support

configname: CONFIG_NVME_MULTIPATH

Linux Kernel Configuration
└─>Device Drivers
└─>NVME Support
└─>NVMe multipath support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This option controls support for multipath access to NVMe
subsystems. If this option is enabled support for NVMe multipath
access is included in the kernel. If this option is disabled support
for NVMe multipath access is excluded from the kernel. When this
option is disabled each controller/namespace receives its
own /dev/nvmeXnY device entry and NVMe multipath access is
not supported.

If unsure, say Y.