Emulex Drivers for Windows Release Notes
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1. 1 Emulex Drivers for Windows Release Notes A complete memory dump will not finish in a boot from storage area network SAN configuration using iBFT with Internet Protocol version 6 IPv6 Workaround Do not specify complete dumps when using iBFT with IPv6 Choose Automatic or Kernel memory dumps P011383 01B Rev A gt G EMULEX An Avago Technologies Company 2 In a boot from SAN configuration using iBFT if the Internet Small Computer System Interface iSCSI target is on a different Internet Protocol version 4 IPv4 subnet than the initiator memory dump will not work Because of a limitation in the Emulex iSCSI crashdump driver ocibftcd sys for memory dumps to work in IPV4 configurations the iSCSI initiator and target must be on the same subnet If the iSCSI initiator and target are on different subnets crashdump will stop at 0 and no memory dmp file will be generated after a reboot Workaround None 3 Windows Server 2008 and Windows Server 2008 R2 are supported although new features are not supported on those operating systems For documentation of features supported on those operating systems see the Emulex Drivers Version 10 4 for Windows User Manual available on the Emulex website 4 Only a maximum of 64 targets can be discovered using the Add Portal option in the iSCSI Target Discovery dialog box Workaround Targets can be added manually or discovered through iSNS 5 While Emulex drivers for Windows 7 an2. VLAN 1 and send the frame out without a VLAN tag and so without VLAN priority resulting in dropped frames If VLAN 0 or VLAN 1 is configured the driver posts an informational message warning you of an incorrect configuration however the results of this error are not prevented Workaround When running network interface card NIC RoCE personality if process flow control PFC is enabled always configure the interface with a VLAN ensuring that the VLAN ID is greater than 1 When using OCe14000 series adapters with active RDMA operations completion queue errors occur on the server when the client is rebooted Any RDMA operation issued by the server in response to an Server Message Block SMB client must be completed before the connections disappear from the server When rebooting any outstanding RDMA operations issued prior to the reboot will be continually retried by the server until it times out resulting in a completion queue error Workaround None After a Windows driver reload with NetworkDirect disabled throughput by way of SMB gets capped to the highest link speed available as shown by the Get SmbClientNetworkInterface PowerShell command on the client system This issue is seen only if RDMA is not enabled on the adapter and SMB uses Transmission Control Protocol TCP Workaround Do one of the following e Set Multichannel Constraint so that only intended interface will be used for traffic e Disable and then enable the po
3. gt G EMULEX An Avago Technologies Company Emulex Drivers for Windows Release Notes Versions FC and FCoE Version 10 6 114 0 NIC Version 10 6 126 0 iSCSI Version 10 6 116 0 Date July 2015 Purpose and Contact Information These release notes describe new features resolved known issues current known issues and technical tips associated with this Emulex drivers for Windows release For the latest product documentation go to www Emulex com If you have questions or require additional information contact an authorized Emulex technical support representative at tech support elx avagotech com 800 854 7112 US Canada toll free 1 714 885 3402 US International or 44 1189 772929 Europe Middle East and Africa New Features 1 2 3 6 Supports OCe14000B series adapters Discontinued support for LPe11000 series adapters Supports RDMA over Converged Ethernet RoCE v2 Layer 3 routing specification on OCe14000B adapters only Adds client support for Windows 10 Optional installation support for the iSCSI Boot Firmware Table iBFT crash dump driver Supports Onelnstall silent installation Resolved Issues 1 2 Packet drops no longer occur when using a 40GbE Cisco switch to connect more than six clients to an adapter configured for RoCE Completion queue errors are no longer reported on the seventh client trying to connect Performance enhancement of Windows RoCE driver Known Issues
4. ault is 0 For example start wait elxdrvr nic lt version gt exe q2 crashdriver 1 When running Onelnstall in silent mode add the ibft 1 to enable the Emulex iSCSI Crash Dump Driver also referred to as iSCSI Boot Firmware Table iBFT crash dump driver The default is 0 For example start wait OneInstall Setup lt version gt exe q2 ibft 1 Technical Tips 1 Emulex Drivers for Windows Release Notes SR IOV and Hyper V Windows Server 2012 Hyper V supports SR IOV only with Windows Server 2012 and Windows 8 8 1 guest operating systems Microsoft has designed SR IOV as an optional P011383 01B Rev A gt G EMULEX An Avago Technologies Company feature in the guest operating system where the SR IOV virtual function is always paired with an emulated NIC interface which is similar to any non SR IOV virtual NIC The virtual Peripheral Component Interconnect PCI function may be added and removed dynamically from the guest operating system without interrupting the network traffic With this design Microsoft is able to support key features such as Live Migration and snapshots even with SR IOV enabled These features do not depend on the existence of the SR IOV hardware they only save the state of the emulated network interface When the virtual machine is restored it will try to recreate the SR IOV virtual NIC but if the hardware is not available it can continue using the emulated NIC seamlessly 2 Ifyou are runni
5. d Windows 8 8 1 are supported they are Emulex signed only You must accept the Emulex certificate to install the client kits Support is provided by Emulex but not by Microsoft Workaround None 6 If you configure the link speed in a BIOS utility the link speed may be overridden by the Emulex driver for Windows according to its LinkSpeed setting Workaround Configure the link speed in both the Emulex driver for Windows and the Boot BIOS or UEFI driver 7 Disabling remote direct memory access RDMA using the PowerShell cmdlet Set NetOffloadGlobalSetting NetworkDirect Disabled is not supported Issuing the command can result in an inconsistent RDMA state specifically RDMA will be disabled globally at the operating system level but will still be enabled at the adapter level Workaround If you run the PowerShell cmdlet Set NetOffloadGlobalSetting NetworkDirect Disabled use the following command to enable RDMA at the operating system level once again Set NetOffloadGlobalSetting NetworkDirect Enabled Alternatively you can use the following PowerShell cmdlets to disable or enable RDMA Disable NetAdapterRdma and Enable NetAdapterRdma Emulex Drivers for Windows Release Notes 2 P011383 01B Rev A 8 10 11 12 13 Emulex Drivers for Windows Release Notes gt G EMULEX An Avago Technologies Company Some switches strip the virtual local area network VLAN tag from the incoming frame with VLAN 0 or
6. dapters from your system you must readjust the multichannel constraints for optimal performance Workaround None The Emulex Drivers Version 10 6 for Windows User Manual states that OCe14000 series adapters support RoCE v2 ports Only OCe14000B series adapters support RoCE v2 ports The Physical Link Tracking parameter is not described in the Emulex Drivers Version 10 6 for Windows User Manual This optional parameter enables or disables physical link tracking when SR IOV is used When SR IOV is enabled the virtual Ethernet bridging VEB switch is used and the driver link status does not reflect the physical link status This parameter forces the driver link status to reflect the physical link status By default physical link status tracking is enabled Disable physical link tracking to allow physical function PF and VFs to communicate via the VEB switch regardless of the physical link status When physical link status tracking is disabled the driver always reports link as UP When physical link tracking is disabled teaming failover will not work When SR IOV is disabled the driver always reports physical link status Two new installation parameters are missing from the Emulex Drivers Version 10 6 for Windows User Manual When running the NIC Driver Kit in silent mode add the crashdriver 1 parameter to enable the Emulex iSCSI Crash Dump Driver also described as the iSCSI Boot Firmware Table iBFT crash dump driver The def
7. ng Windows Server 2012 R2 ensure that you have installed the latest Windows update Otherwise if shutdown is initiated while RoCE traffic is in progress an operating system error may occur often referred to as a BSOD The computer may freeze and require restarting to make it operational While the April 2014 update is specifically required to avoid this issue Emulex strongly recommends the you have Windows Update activated on your servers 3 RoCE traffic requires a lossless network During heavy I O PFC traffic may be dropped at the switch Increase switch port egress buffers Consult your switch vendor or switch documentation Copyright 2015 Emulex All rights reserved worldwide This document refers to various companies and products by their trade names In most if not all cases their respective companies claim these designations as trademarks or registered trademarks This information is provided for reference only Although this information is believed to be accurate and reliable at the time of publication Emulex assumes no responsibility for errors or omissions Emulex reserves the right to make changes or corrections without notice This report is the property of Emulex and may not be duplicated without permission from the Company Emulex Drivers for Windows Release Notes 5 P011383 01B Rev A
8. rt of the required interface e Ensure that no other interfaces are enabled This requires SMB to choose the only interface available that will not cap throughput e Reboot the system For optimal network virtualization using generic routing encapsulation NVGRE performance if Universal Multi Channel UMC is used enable a Hyper V virtual switch on only one NIC function per port Workaround None SMB Direct failover limitations using 4 port OCe14000 series adapters When using 4 port OCe14000 series adapters and one port fails the RDMA connections will be torn down as the result of an out of resource failure Workaround None On OCe14000 series adapters virtual machines VMs do not appear if the virtual switch is created before selecting an single root I O virtualization SR IOV supported profile P011383 01B Rev A 14 15 16 17 18 gt G EMULEX An Avago Technologies Company Workaround Destroy and recreate the virtual switch If you set the adapter to the NIC SRIOV profile and then create the virtual switch SR IOV works as intended On OCe14401 adapters the number of VMQueues are reduced when migrating the VM s Workaround Refer to Knowledge Base article 3031598 on the Microsoft website for more information The following information was omitted from the current release of the Emulex Drivers Version 10 6 for Windows User Manual under the topic SMB Multichannel Note When adding or removing a
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