Installation guide

Chapter 29. N_Port ID Virtualization (NPIV)

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WWNN and WWPN validation

Libvirt does not validate the WWPN or WWNN values, invalid WWNs are rejected by

the kernel and libvirt reports the failure. The error reported by the kernel is similar to the

following:

# virsh nodedev-create badwwn.xml

error: Failed to create node device from badwwn.xml

error: Write of '1111222233334444:5555666677778888' to '/sys/class/fc_host/host6/

vport_create' during vport create/delete failed: No such file or directory

4. Create the virtual HBA

Create the virtual HBA with the virsh nodedev-create command using the file from the

previous step.

# virsh nodedev-create newHBA.xml

Node device pci_10df_fe00_0_scsi_host_0_scsi_host created from newHBA.xml

The new virtual HBA should be detected and available to the host. The create command output

gives you the node device name of the newly created device.

Destroying a virtual HBA with virsh

To destroy the device, use virsh nodedev-destroy:

# virsh nodedev-destroy pci_10df_fe00_0_scsi_host_0_scsi_host

Destroyed node device 'pci_10df_fe00_0_scsi_host_0_scsi_host'