Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION Instrukcja Użytkownika Pobierz pdf (Strona 12)

Enabling SR-IOV virtual functions on both Intel and

Mellanox cards result in invalid naming conventions for

the network devices

Description: While rebooting, the naming conventions by biosdevname may not be accurate for

all the networking devices, when SR-IOV virtual functions are enabled by systemd

on both Intel and Mellanox devices at the same time.

Applies to: Red Hat Enterprise Linux 7.0

Cause: The mlx4_core driver consumes more time for the probe of all the VFs, which

results in termination of biosdevname.

Workaround: Enable SR-IOV on Intel using the sysfs method.

Mellanox card does not display supported link modes as

40G

Description: The Mellanox 40G Network card does not display the supported link modes as

40G. Instead, it is displayed as 10G.

Applies to: Red Hat Enterprise Linux 7.0

Cause: The Mellanox driver does not set the 40 GB bits in advertised and supported links.

Workaround: This error can be ignored as there is no functionality loss.

Unable to install Red Hat Enterprise Linux 7 on a drive

with an existing btrfs partition

Description: During Red Hat Enterprise Linux 7 installation after selecting a drive with existing

btrfs file system, the Anaconda installer is not able to delete the btrfs partitions.

Applies to: Red Hat Enterprise Linux 7.0

Cause: The Anaconda installer is not able to delete the sub volumes of btrfs file systems.

Workaround: Ensure that there are no existing brtfs partitions on the drive.

syslog displays error Related to network.service

Description: syslog displays the following error messages indicating that network.service has

failed:

• Failed to activate 'em1': Connection 'em1' is not available

on the device em1 at this time.

• Connection activation failed: Connection 'em1' is not

available on the device em1 at this time.

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Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION Instrukcja Użytkownika Strona 12