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The legacy and newer QLogic guides disagree about the default driver, supported adapters, NPIV, sysfs layout and module lifecycle. The HOWTO also carries SVN, kernel replacement, firmware flashing and discovery commands that can disrupt active storage. Commit7aade0a109("Makefile: Make the qla2x00t-32gbit driver the default QLogic FC driver") selected the newer tree by default. Commita788a4efd7("Newer version of QLogic target driver with 16G (26xx/83xx) support") added that tree and disabled legacy NPIV target callbacks. Commit08e532715d("Remove procfs support") removed the old management path. Use each qla2xxx_pci_tbl[] and qla_os.c for hardware and firmware facts. Document QLA_32GBIT=no, current per-port sysfs state, reset effects and the matched qla2xxx_scst and qla2x00tgt modules. Replace unsafe generic recipes with repository or vendor sources and mark every HBA, fabric, target and backing-device operation as live.