This section describes how to dynamically create and destroy virtual functions. If you cannot use the dynamic methods to perform these actions, initiate a delayed reconfiguration on the root domain before you create or destroy virtual functions.
If you cannot use this dynamic method, use the static method instead. See Static SR-IOV.
primary# ldm list-io
Note that the name of the physical function includes the location information for the PCIe SR-IOV card or on-board device.
Perform this step only if I/O virtualization is not enabled already for the bus that has the physical function.
After you create one or more virtual functions, you can assign them to a guest domain.
primary# ldm create-vf -n number | max pf-name
Use the ldm create-vf -n max command to create all the virtual functions for that physical function at one time. This command automatically allocates the port and node WWNs for each virtual function and sets the bw-percent property to the default value, which is 0. This value specifies that fair share bandwidth is allocated to all virtual functions.
You can use either the path name or the pseudonym name to specify virtual functions. However, the recommended practice is to use the pseudonym name.
ldm create-vf [bw-percent=value] [port-wwn=value node-wwn=value] pf-name
You can also manually specify Fibre Channel class-specific property values.
A device status might be INV immediately following a root domain reboot (including that of the primary) or immediately after you use the ldm create-vf or ldm destroy-vf command.
primary# ldm start-reconf root-domain-name
Use the same commands as shown previously to dynamically create the virtual functions.
primary# ldm stop-domain -r root-domain
primary# shutdown -i6 -g0 -y
This example shows information about the /SYS/MB/PCIE7/IOVFC.PF0 physical function:
This physical function is from a board in a PCIe slot, PCIE7.
The IOVFC string indicates that the physical function is a Fibre Channel SR-IOV device.
primary# ldm list-io NAME TYPE BUS DOMAIN STATUS ---- ---- --- ------ ------ pci_0 BUS pci_0 primary IOV pci_1 BUS pci_1 rootdom1 IOV niu_0 NIU niu_0 primary niu_1 NIU niu_1 primary /SYS/MB/PCIE0 PCIE pci_0 primary OCC /SYS/MB/PCIE2 PCIE pci_0 primary OCC /SYS/MB/PCIE4 PCIE pci_0 primary OCC /SYS/MB/PCIE6 PCIE pci_0 primary EMP /SYS/MB/PCIE8 PCIE pci_0 primary EMP /SYS/MB/SASHBA PCIE pci_0 primary OCC /SYS/MB/NET0 PCIE pci_0 primary OCC /SYS/MB/PCIE1 PCIE pci_1 rootdom1 OCC /SYS/MB/PCIE3 PCIE pci_1 rootdom1 OCC /SYS/MB/PCIE5 PCIE pci_1 rootdom1 OCC /SYS/MB/PCIE7 PCIE pci_1 rootdom1 OCC /SYS/MB/PCIE9 PCIE pci_1 rootdom1 OCC /SYS/MB/NET2 PCIE pci_1 rootdom1 OCC /SYS/MB/NET0/IOVNET.PF0 PF pci_0 primary /SYS/MB/NET0/IOVNET.PF1 PF pci_0 primary /SYS/MB/PCIE5/IOVNET.PF0 PF pci_1 rootdom1 /SYS/MB/PCIE5/IOVNET.PF1 PF pci_1 rootdom1 /SYS/MB/PCIE7/IOVFC.PF0 PF pci_1 rootdom1 /SYS/MB/PCIE7/IOVFC.PF1 PF pci_1 rootdom1 /SYS/MB/NET2/IOVNET.PF0 PF pci_1 rootdom1 /SYS/MB/NET2/IOVNET.PF1 PF pci_1 rootdom1
The following command shows more details about the specified physical function. The maxvfs value indicates the maximum number of virtual functions that is supported by the device.
primary# ldm list-io -l /SYS/MB/PCIE7/IOVFC.PF0
NAME TYPE BUS DOMAIN STATUS
---- ---- --- ------ ------
/SYS/MB/PCIE7/IOVFC.PF0 PF pci_0 rootdom1
[pci@400/pci@1/pci@0/pci@6/SUNW,emlxs@0]
maxvfs = 8
Example 23 Dynamically Creating a Fibre Channel Virtual Function Without Setting Optional Properties
This example dynamically creates a virtual function without setting any optional properties. In this case, the ldm create-vf command automatically allocates the default bandwidth percentage, port world-wide name (WWN), and node WWN values.
Ensure that I/O virtualization is enabled on the pci_1 PCIe bus. See How to Enable I/O Virtualization for a PCIe Bus.
You can use the ldm create-vf command to create all the virtual functions from the /SYS/MB/PCIE7/IOVFC.PF0 physical function.
primary# ldm create-vf -n max /SYS/MB/PCIE7/IOVFC.PF0 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF0 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF1 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF2 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF3 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF4 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF5 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF6 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF7Example 24 Dynamically Creating a Fibre Channel Virtual Function and Setting Properties
This example dynamically creates a virtual function while setting the bw-percent property value to 25 and specifies the port and node WWNs.
primary# ldm create-vf port-wwn=10:00:00:14:4F:FC:00:01 \ node-wwn=20:00:00:14:4F:FC:00:01 bw-percent=25 /SYS/MB/PCIE7/IOVFC.PF0Example 25 Statically Creating a Fibre Channel Virtual Function Without Setting Optional Properties
This example statically creates a virtual function without setting any optional properties. In this case, the ldm create-vf command automatically allocates the default bandwidth percentage, port world-wide name (WWN), and node WWN values.
First you initiate a delayed reconfiguration on the rootdom1 domain. Then, enable I/O virtualization on the pci_1 PCIe bus. Because the pci_1 bus has already been assigned to the rootdom1 root domain, use the ldm set-io command to enable I/O virtualization.
primary# ldm start-reconf rootdom1 Initiating a delayed reconfiguration operation on the rootdom1 domain. All configuration changes for other domains are disabled until the rootdom1 domain reboots, at which time the new configuration for the rootdom1 domain will also take effect. primary# ldm set-io iov=on pci_1
Now, you can use the ldm create-vf command to create all the virtual functions from the /SYS/MB/PCIE7/IOVFC.PF0 physical function.
primary# ldm create-vf -n max /SYS/MB/PCIE7/IOVFC.PF0 ------------------------------------------------------------------------------ Notice: The rootdom1 domain is in the process of a delayed reconfiguration. Any changes made to the rootdom1 domain will only take effect after it reboots. ------------------------------------------------------------------------------ Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF0 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF1 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF2 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF3 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF4 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF5 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF6 Created new vf: /SYS/MB/PCIE7/IOVFC.PF0.VF7
Finally, reboot the rootdom1 root domain to make the changes take effect in one of the following ways:
rootdom1 is a non-primary root domain
primary# ldm stop-domain -r rootdom1
rootdom1 is the primary domain
primary# shutdown -i6 -g0 -y