IBM Support

IJ27831: 'FAILED TO MODIFY RX AND TX VALUE FOR ETH0' WHEN INSTALLING QRADAR ON A KVM THAT IS USING VIRTIO_NET DRIVER

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APAR status

  • Closed as program error.

Error description

  • During the Network Information setup page of a QRadar
    installation, a message similar to "failed to modify rx and tx
    value for eth0" can sometimes be observed.  This occurs when
    QRadar is installed on a KVM with the Virtio_Net driver and the
    ring buffer settings are attempted to be applied by the
    install, but fail.
    Attempting to manually configure the ring buffer settings with
    the ifup-local command fails with a similar error message.
    On this type of KVM installation, the QRadar installation
    should not be attempting to apply ring buffer settings.
    On this type of KVM installation, the QRadar installation
    should not be attempting to apply ring buffer settings for
    network interfaces.
    To verify if the Virtio_Net driver is in use, the following can
    be run from a command line:
    # ethtool -i eth0 | grep -i driver
    If the output from the above command is:
    driver:virtio_net
    that indicates the virtio_net driver is installed.
    

Local fix

  • Using the vi command, edit /sbin/ifup-local
    Changing ETHTOOL_ENABLED=1
    to ETHTOOL_ENABLED=0
    For Example:
    if [[ "${DEVICE}" =~ ^bond.* ]]; then
           ETHTOOL_ENABLED=0
    else
           ethtool -g "${DEVICE}" 2&>1 > /dev/null
           if [ "$?" -ne 1 ] ; then
                   ETHTOOL_ENABLED=0
           else
                    ETHTOOL_ENABLED=1
           fi
    fi
    Change to:
    if [[ "${DEVICE}" =~ ^bond.* ]]; then
           ETHTOOL_ENABLED=0
    else
           ethtool -g "${DEVICE}" 2&>1 > /dev/null
           if [ "$?" -ne 1 ] ; then
                   ETHTOOL_ENABLED=0
           else
                    ETHTOOL_ENABLED=0
           fi
    fi
    

Problem summary

  • This issue was fixed in QRadar QRM QVM release of 7.4.2
    FixPack 2, 7.4.1 FixPack 2 and 7.3.3 FixPack 6.
    

Problem conclusion

  • This issue was fixed in QRadar QRM QVM release of 7.4.2
    FixPack 2, 7.4.1 FixPack 2 and 7.3.3 FixPack 6.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IJ27831

  • Reported component name

    QRADAR SOFTWARE

  • Reported component ID

    5725QRDSW

  • Reported release

    732

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-09-10

  • Closed date

    2020-11-16

  • Last modified date

    2021-01-26

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    QRADAR SOFTWARE

  • Fixed component ID

    5725QRDSW

Applicable component levels

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU029","label":"Software"},"Product":{"code":"SSBQAC","label":"IBM QRadar SIEM"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"732"}]

Document Information

Modified date:
08 March 2021