Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION Bedienungsanleitung PDF herunterladen (Seite 7)

Workaround: Disable Spanning Tree Protocol (STP) or set PortFast on the uplink port to the

iDRAC, during the Virtual Media installation.

Unable to shutdown the Red Hat Enterprise Linux 7 when

you select the Graceful shutdown option or when you

press the power button on the system

Description: When you select the Graceful shutdown option from iDRAC or press the power

button, the system goes to a suspended state and all the tasks stop. The system

restarts to the login prompt on pressing any key.

Applies to: Red Hat Enterprise Linux 7.0

Cause: By default the Power button action drop-down menu is mapped to the

Suspended state in the gnome-tweak-tool.

Workaround: Select Shutdown from the Power button action drop-down menu.

Kernel panic occurs when OMSA services are started

on Red Hat Enterprise Linux 7

Description: Kernel panic occurs when OpenManage Server Administrator (OMSA) services are

started on Red Hat Enterprise Linux 7.

Applies to: Red Hat Enterprise Linux 7.0

Cause: The Kernel might spend more time in servicing the kernel timer functions and set a

flag to prevent the other code from resetting the timer hardware (APIC timer). Then

it programs the timer hardware for a timeout up to 100 ms to run the kernel timer

functions. At the next timer hardware interrupt, this flag is cleared. However, there

is a bug in the kernel where this flag can be ignored in one specific code path.

When this happens, the timer hardware can be set to the wrong timeout value. This

incorrect timeout value can be over 10 seconds during this time no kernel timer

functions will be run.

Workaround: Update the kernel to Z-stream kernel.

When Virtual Disk (VD) is not initialized, Red Hat

Enterprise Linux 7 cannot be installed on 4k sector hard

drives

Description: While installing Red Hat Enterprise Linux 7, on RAID 0 volume created on 4K sector

hard drive, it displays the message setting up the installation environment and an

unknown error.

Applies to: Red Hat Enterprise Linux 7.0

Cause: Calculating the time required to delete the GUID partition table (GPT) magic

number is incorrect for 4k sector hard drives.

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Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION Bedienungsanleitung Seite 7