How FC Storage Appears in Linux
FC Fabric
└── HBA Driver (lpfc / qla2xxx)
└── SCSI Mid-Layer
└── SCSI Disk (sdX — one per path)
└── dm-multipath
└── /dev/mapper/mpathX ← application uses this
└── LVM (optional)Always target /dev/mapper/ devices, never raw sdX paths. ALUA identifies preferred (active/optimized) vs. available (active/non-optimized) paths.