Owners Manual

can be ignored for the specic code path. When the ag is ignored, the timer hardware might be set to an
incorrect timeout value. This incorrect timeout value might be over 10 seconds and during this time no kernel timer
functions can be run.
Workaround: Upgrade from Red Hat Enterprise Linux 6.5 to Red Hat Enterprise Linux 6.6.
Unable to Install Red Hat Enterprise Linux 6.5 with an existing
brtfs partition
Description: Red Hat Enterprise Linux 6.5 kernel does not function, when installing on Red Hat Enterprise Linux 7 /SUSE Linux
Enterprise Server 12 with an existing brtfs partition.
Cause: The btrfs le systems is not fully supported.
Workaround: Ensure that there are no existing brtfs partitions on the drive before installation.
Underscore is missing for the interface name of Vindicator 2
Emulex card on network page
Description: Underscore is missing for the interface name of Vindicator 2 Emulex card, instead of em1_1 it is showing as em11
on network page.
Cause: Network manager does not update the interface name with an underscore.
Workaround: This error can be ignored as there is no functionality loss.
Unable to boot Red Hat Enterprise Linux 6.5, after successful
installation in UEFI mode
Description:
Unable to boot Red Hat Enterprise Linux 6.5, after successful installation because there is no boot entry in UEFI
boot menu.
Cause: EFIbootmgr is unable to create a UEFI boot entry, when boot variables of Hard drive C: (under BIOS) is greater
than 1024bytes. This is a known limitation.
Workaround:
1 Remove all the bootable devices shown under Hard Drive C: (listed in BIOS under F11 option).
2 Boot into legacy BIOS, and change the boot setting to UEFI mode.
3 Reboot the server, re insert the devices that we removed under Hard Drive C: and reinstall.
Or Create the boot entry manually by choosing redhat.e le which is listed in "Boot from File" option.
DDR DMA testing fails in ethtool on Red Hat Enterprise Linux
6.5 Hypervisor
Description
On a Red Hat Enterprise Linux 6.5 Hypervisor using the Emulex OCM14104 adapter, the Double Data Rate (DDR)
Direct Memory Access (DMA) testing on the ethtool fails, when the cable is unplugged.
18 Installation instructions and important information