Hello All, I would like to get some feedback on the update I would like to make to this page. http://wiki.libvirt.org/page/NPIV_in_libvirt Original Content : *NOTE:* You can also create a scsi pool with source adapter type "fc_host" for a HBA, and in that case the attribute "parent" is not necessary. Patched Content: *NOTE:* You can also create a scsi pool with source adapter type "fc_host" for a HBA, and in that case the attribute "parent" is not necessary.Also the attribute "managed" should not be used or set to "no" , ('managed=no' ) for a scsi pool backed with physical HBA. Here are the details for more clarity on the issue: #git show 5530f248 (Info on managed attribute) An optional attribute to instruct the SCSI storage backend to manage destroying the vHBA when the pool is destroyed. For configurations that do not provide an already created vHBA from a 'virsh nodedev-create', libvirt will set this property to "yes". For configurations that have already created a vHBA via 'virsh nodedev-create' and are using the wwnn/wwpn from that vHBA and optionally the scsi_host parent, setting this attribute to "yes" will allow libvirt to destroy the node device when the pool is destroyed. If this attribute is set to "no" or not defined in the XML, then libvirt will not destroy the vHBA. When *managed=yes* is used in the pool xml for scsi pools *backed with physical HBA ports*, the virsh pool-destroy command errors out. #virsh pool-dumpxml poolhba_phy <pool type='scsi'> <name>poolhba_phy</name> <uuid>60d74134-0c18-4d4f-9305-24d96ce1a1b6</uuid> <capacity unit='bytes'>268435456000</capacity> <allocation unit='bytes'>268435456000</allocation> <available unit='bytes'>0</available> <source> <adapter type='fc_host' *managed='yes'* *wwnn='20000120fa8f1271' wwpn='10000090fa8f1271'*/> </source> <target> <path>/dev/disk/by-id</path> <permissions> <mode>0700</mode> <owner>0</owner> <group>0</group> </permissions> </target> </pool> The wwnn and wwpn used above is that of the physical HBA shown below. #virsh nodedev-dumpxml scsi_host2 <- This is the physical HBA. <device> <name>scsi_host2</name> <path>/sys/devices/pci0001:00/0001:00:00.0/0001:01:00.0/0001:02:09.0/0001:09:00.1/host2</path> *<parent>pci_0001_09_00_1</parent>* <capability type='scsi_host'> <host>2</host> <unique_id>1</unique_id> <capability type='fc_host'> *<wwnn>20000120fa8f1271</wwnn> <wwpn>10000090fa8f1271</wwpn>* <fabric_wwn>100050eb1a99d430</fabric_wwn> </capability> <capability type='vport_ops'> <max_vports>255</max_vports> <vports>0</vports> </capability> </capability> </device> #virsh pool-destroy poolhba_phy error: Failed to destroy pool poolhba_phy error: internal error: Invalid adapter name 'pci_0001_09_00_1' for SCSI pool However, When managed attribute is removed OR set to no in the xml, # virsh pool-destroy poolhba_phy Pool poolhba_phy destroyed Although the page http://wiki.libvirt.org/page/NPIV_in_libvirt does not talk about the managed attribute as of now, it would be helpful for a user who might face the above mentioned use-case. Looking forward to your views. Warm Regards, Nitesh Konkar.