3 Replies Latest reply: Mar 31, 2012 7:48 AM by 912398 RSS

    Invalid network speed in OEL 5.7 VM (Oracle VM 3.0.3)

    912398
      Dear all,

      I have installed OEL 5.7 in VM Server 3.0.3. And I found that virtual network adapter detected 100Mb only!!! The VM server has 4 x 1 Gbps onboard network port.

      [root@CSDAB501 tmp]# ethtool eth3
      Settings for eth3:
      Supported ports: [ TP MII ]
      Supported link modes: 10baseT/Half 10baseT/Full
      100baseT/Half 100baseT/Full
      Supports auto-negotiation: Yes
      Advertised link modes: 10baseT/Half 10baseT/Full
      100baseT/Half 100baseT/Full
      Advertised auto-negotiation: Yes
      Speed: 100Mb/s
      Duplex: Full
      Port: MII
      PHYAD: 32
      Transceiver: internal
      Auto-negotiation: on
      Supports Wake-on: pumbg
      Wake-on: d
      Current message level: 0x00000007 (7)
      Link detected: yes

      [root@CSDAB501 tmp]# uname -a
      Linux CSDAB501 2.6.32-200.13.1.el5uek #1 SMP Wed Jul 27 21:02:33 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux
      [root@CSDAB501 tmp]# cat /etc/enterprise-release
      Enterprise Linux Enterprise Linux Server release 5.7 (Carthage)

      How can I resolve this issue? And I found no PV driver for OEL.

      Thanks,

      Mike
        • 1. Re: Invalid network speed in OEL 5.7 VM (Oracle VM 3.0.3)
          861130
          HI,
          PV drivers should be included with the kernel on UEK. Can you check what it says under /etc/modprobe.conf for the network aliases?
          • 2. Re: Invalid network speed in OEL 5.7 VM (Oracle VM 3.0.3)
            Avi Miller-Oracle
            mtktang wrote:
            Linux CSDAB501 2.6.32-200.13.1.el5uek #1 SMP Wed Jul 27 21:02:33 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux
            This is our UEK kernel, so check what devices are being referenced in /etc/fstab. If you're using /dev/xvd style devices or UUIDs or LVM, you can just switch the VM guest type to a Xen PVM guest and it'll boot in full paravirtualized mode.
            • 3. Re: Invalid network speed in OEL 5.7 VM (Oracle VM 3.0.3)
              912398
              The following is the feedback from Oracle Support.
              ===
              Oracle Support - March 31, 2012 8:34:28 AM GMT+08:00 [ODM Answer]
              kernel-uek-2.6.32-100.35.1.el5uek and higher have support for hardware virtualized guest that uses paravirtualized drivers (PVHVM).

              So I assume you run kernel kernel-uek-2.6.32-200.13.1.el5uek.x86_64 which support PVHVM driver by default.
              1. The document of '8.11 Installing Paravirtualized Drivers' is url below:
              http://docs.oracle.com/cd/E20065_01/doc.30/e18549/vm.htm#BABICHHG
              [1] Show kernel you are running now.
              #uname -a
              If kernel is support PVHVM driver by default, then you can execute the next steps:

              [2] Modify the /etc/modprobe.conf file to include:
              alias scsi_hostadapter xenblk
              alias eth0 xennet

              [3]Shut down the virtual machine.

              [4]Edit the virtual machine and change the Domain Type to Xen PVM. See Section 8.9.9, "Editing a Virtual Machine" for information on editing a virtual machine.
              [5] Start the virtual machine. See Section 8.9.1, "Starting a Virtual Machine" for information on starting a virtual machine

              2. Generally we recommend you to install PV guest instead of running HVM guest with pv driver.

              As PVHVM is a domain Type which is used to run Microsoft Windows guest operating systems with an acceptable performance level.
              ===

              I am confused both mode of VM - PVM and HVM. Which one is the best choice of virtualized OEL 5.7 running Oracle 11g R2.

              Wait for your feedback.

              Thanks.