Automatically attached SCSI devices

6.10 LPAR mode z/VM guest

FCP devices that use NPIV mode, and for which you did not disable automatic LUN scanning, detect the LUNs automatically and no configuring is necessary.

In this case, no FCP LUN entries are created under /sys/bus/ccw/drivers/zfcp/<device_bus_id>/<wwpn>.

What to do next

To check whether a SCSI device is registered, check for a directory with the name of the LUN in /sys/bus/scsi/devices. If a SCSI device does not exist for this LUN, the LUN is not valid in the storage system, or the FCP device is offline in Linux®.