Oracle® VM Server for SPARC 3.3 Administration Guide

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Updated: October 2015

Dynamic SR-IOV

    The dynamic SR-IOV feature removes the following static SR-IOV requirements:

  • Root domain. Initate a delayed reconfiguration on the root domain, create or destroy a virtual function, and reboot the root domain

  • I/O domain. Stop the I/O domain, add or remove a virtual function, and start the I/O domain

With dynamic SR-IOV you can dynamically create or destroy a virtual function without having to initiate a delayed reconfiguration on the root domain. A virtual function can also be dynamically added to or removed from an I/O domain without having to stop the domain. The Logical Domains Manager communicates with the Logical Domains agent and the Oracle Solaris I/O virtualization framework to effect these changes dynamically.

Dynamic SR-IOV Software Requirements

For information about the required PCIe SR-IOV software and firmware versions, see SR-IOV Hardware and Software Requirements.

Note - If your system does not meet the dynamic SR-IOV software and firmware requirements, you must use the static SR-IOV method to perform SR-IOV-related tasks. See Static SR-IOV.

Dynamic SR-IOV Configuration Requirements

    To dynamically create or destroy a virtual function, ensure that the following conditions are met:

  • I/O virtualization has been enabled for a PCIe bus before you begin to configure virtual functions.

  • The OS that runs on the root domain and on I/O domains must be at least the Oracle Solaris 11.1 SRU 10 OS.

  • The physical function device is not configured in the OS or is in a multipathing configuration. For example, you can unplumb an Ethernet SR-IOV device or have it in an IPMP or an aggregation to successfully create or destroy a virtual function.

    An operation to create or destroy a virtual function requires that the physical function device driver toggle between the offline and online states. A multipathing configuration permits the device driver to toggle between these states.

  • The virtual function is either not in use or in a multipathing configuration before you remove a virtual function from an I/O domain. For example, you can either unplumb an Ethernet SR-IOV virtual function or not use it in an IPMP configuration.

    Note - You cannot use aggregation for Ethernet SR-IOV virtual functions because the current multipathing implementation does not support virtual functions.