3.2. Mounting an XFS File System
mount /dev/device /mount/point
mount -o nobarrier /dev/device /mount/point
Direct Access Technology Preview
Direct Access(DAX) provides, as a Technology Preview on the ext4 and XFS file systems, a means for an application to directly map persistent memory into its address space. To use DAX, a system must have some form of persistent memory available, usually in the form of one or more Non-Volatile Dual In-line Memory Modules (NVDIMMs), and a file system that supports DAX must be created on the NVDIMM(s). Also, the file system must be mounted with the
daxmount option. Then, an
mmapof a file on the dax-mounted file system results in a direct mapping of storage into the application's address space.