Release Notes
Table Of Contents
- Dell EMC PowerEdge Systems Running Red Hat Enterprise Linux 7 Release Notes
- Contents
- Release summary
- Compatibility
- New and enhanced in RHEL 7.x release
- Fixes
- The mcelog utility logs 'only decoding architectural errors' message in var/log/messages
- An error message is displayed when the internal SATA optical drive is empty during UEFI boot
- FCoE session is not reestablished after MX9116N switch is rebooted
- Disk drives part of MD RAID are not listed as installation destination by the installer
- Dell EMC OpenManage Storage Services utility fails to reconfigure the virtual disk
- Operating system crashes when twenty DIMMs are connected to the server and the number of I/O operations is high
- Dell EMC Express Flash Enterprise NVMe CD6/CM6 device is not detected by the kernel
- Dell EMC PowerEdge Express Flash Enterprise NVMe Agnostic (AGN) device is not detected by the operating system
- IO_PAGE_FAULT messages are displayed in dmesg for PCIe Generation 4 devices
- Dell EMC PowerEdge Express Flash Enterprise NVMe Agnostic (AGN) device causes the system to stop responding
- Transmit and receive statistics are reported as zero by the ip tool for Broadcom BCM57504 adapters
- Dmesg displays error messages when Broadcom BCM57504 25GB is used on Red Hat Enterprise Linux 7.8
- Important notes
- Known issues
- Intel E810 NIC interfaces are not functional on AMD Rome CPU based systems
- acpi_pad threads are not spawned as expected when power capping is enabled in iDRAC
- Dell Controlled Turbo feature is not functional
- The dmidecode utility displays the slot type as
for PCIe Gen 4 NVMe slots - Access Vector Cache (AVC) denial messages are displayed when NVMe disk is hot inserted
- QLogic Gen7 Fibre Channel cards are not detected with in-box drivers
- Linux operating system fails to detect the Intel x710 card
- After system reboot, Disk data format (DDF) devices are not listed in /proc/mdstat
- System crashes when rebooted with SR-IOV-enabled QLogic cards
- Dmidecode displays OUT OF SPEC in Slot Type and Slot Length of SMBIOS system slots
- Custom partitioning fails with FC LUN
- iscsiadm output displays STATIC in the iface.bootproto field when the network interface is configured to DHCP
- When system reboots, system stops responding at the end of the reboot process
- NMI watchdog reports CPU soft lockup
- Unable to create or modify namespace for NVDIMM
- Chipset watchdog device is not created when the OS Watchdog Timer option is enabled in BIOS
- Systems with QLogic Cards that are configured with VLAN over Bond fail to shutdown or reboot
- NetworkManager fails to bring up VLAN interface created over Bond interface
- NMI message is displayed on Dell EMC AMD systems with NVMe SSDs
- Booting into OS with the QLogic FastLinQ QL41000 card setup with iscsi offload logs multiple error messages related to iSCSI session
- Kernel panic occurs when FCoE function is enabled in QL41000 series adapters
- Network throughput may not be as expected on Broadcom 25 GB or QLogic 25 GB network cards
- Kernel panic occurs with AMD processors on Red Hat Enterprise Linux 7.4
- Turbostat displays an input/output error with AMD processor
- qede driver probe fails when NIC+RDMA is enabled NPAR-EP partitions in QL41xxx cards
- Red Hat Enterprise Linux 7.4 with QLogic QL41xxx rNDC cards ping fails
- SRIOV VFs of Mellanox cards interfaces are named incorrectly
- Red Hat Enterprise Linux 7.4 and 7.5 display an error message related to softhsm tokens
- Red Hat Enterprise Linux 7 displays an error message while searching for a query in Tracker
- NVMe drive model is displayed as unknown in parted
- System Monitor displays incorrect number of CPUs
- Red Hat Enterprise Linux 7 installation may cause Machine Check Errors
- Caps Lock LED status is always off in CLI
- Red Hat Enterprise Linux 7 displays incorrect welcome message
- Red Hat Enterprise Linux 7.4 displays black screen after iSCSI installation using QLogic QL4xxx cards with out-of-box drivers
- Unable to discover iSCSI LUN during Red Hat Enterprise Linux 7 installation with Intel X-550 cards
- Unable to shut down Red Hat Enterprise Linux 7 when you select Graceful shutdown option or when you press power button on system
- Installer displays an exception when installing on an iSCSI disk using QLogic QL41000 qedi based drivers
- Progress bar is not displayed while copying a file from USB drive to Desktop
- Link flap messages are displayed during the device probe for QL41xxx devices
- ip link/ifconfig displays RX dropped packets for QL41xxx based interfaces
- dmesg displays debug messages for QL41xxx devices
- Drivers available in OEMDRV drive is not installed during the OS installation
- Unable to boot to iSCSI after enabling VLAN
- iSCSI interface is not displayed in Anaconda GUI
- Disabling SRIOV-vfs of Mellanox-ConnectX-4 cards results in terminal hang
- mei_me displays hardware start failed messages
- Intel - Sage Flat - ISCSI LUN is not discovered during Red Hat Enterprise Linux 7 OS installation
- Watchdog timer function did not work on Red Hat Enterprise Linux 7.2
- Recovery is not starting on RAID 01 virtual disk when I/Os are in progress
- Red Hat Enterprise Linux 7.3 displays an ACPI warning
- Red Hat Enterprise Linux 7.3 displays a mcelog error message
- IPv6 UEFI PXE installation fails
- Intel x520 FCoE first boot fails with kernel crash
- irqbalance spam messages with banned CPU conflict
- Coretemp driver adds a limited number of cores
- Turbostat displays incorrect information
- Ethtool reports a lower port speed
- Red Hat Enterprise Linux 7.3 displays an error message for drivers
- Mellanox ConnectX-4 NIC interfaces are named incorrectly
- Unable to read the Base Address Registers address logged in /var/log/messages
- Unable to detect a degraded S130 volume after the reboot
- Unable to install Red Hat Enterprise Linux 7 in the 16th hard drive slot by using unattended installation
- Red Hat Enterprise Linux 7 displays an error message related to network service in var/log/messages
- Unable to assign hot spare in Software RAID configuration when the virtual disk is in use
- ACPI displays warning message when system IO range conflicts
- DWS login fails in Red Hat Enterprise Linux 7.2
- Red Hat Enterprise Linux 7.2 displays a warning message in dmesg logs
- Invalid naming conventions for the Intel X710 card when NPAR or NPAR-EP is enabled
- Red Hat Enterprise Linux 7 displays an error message in /var/log/messages
- Unable to reboot Red Hat Enterprise Linux 7 after the successful installation on iSCSI or FC or FCoE
- Red Hat Enterprise Linux 7 displays an unknown netevent message during FCoE boot
- Ethtool offline test for network devices do not restore its previous state
- Installation on iSCSI LUN displays few unknown symbol messages
- NVMe devices are not identified during Red Hat Enterprise Linux installation
- Unable to restart Red Hat Enterprise Linux 7 after the successful installation on iSCSI LUN
- Red Hat Enterprise Linux 7 might not boot in the UEFI mode
- Installing Red Hat Enterprise Linux 7 by using the iDRAC Virtual Media does not resume if the iDRAC network is set to the shared LOM mode
- Kernel panic occurs when OMSA services are started on Red Hat Enterprise Linux 7
- When Virtual Disk is not initialized, Red Hat Enterprise Linux 7 cannot be installed on 4k sector hard drives
- Invalid naming conventions for the ports of Emulex OneConnect OCe14102-UX-D card when NPAR-EP is enabled
- Unable to move soft link .desktop file
- Unable to boot Red Hat Enterprise Linux 7, when the Execute Disable option is disabled
- Unable to install Red Hat Enterprise Linux 7 in the UEFI mode
- While adding second slave to bond, it asks for connection type and shows additional connection types
- Loopback device is displayed as unknown in network settings
- Kernel panic on reboot or shutdown when Mellanox Team is setup
- PCIeSSDs report incorrect pciehp messages during boot
- VMM does not displays Windows Server 2012 in drop-down list
- Ethtool link test fails in Offline mode despite the cable being connected to the port
- PXE boot fails with a system crash when Red Hat Enterprise Linux 7 is installed on local storage and the tftp server has an invalid boot EFI file
- NVMe driver reports I/O error on Surprise Removal or Surprise Insertion
- Reading EEPROM from a Broadcom device via ethtool results in soft lockup
- Error during the first boot on iSCSI disk
- Enabling SR-IOV virtual functions on both Intel and Mellanox cards result in invalid naming conventions for the network devices
- Mellanox card does not display supported link modes as 40G
- Unable to install Red Hat Enterprise Linux 7 on a drive with an existing btrfs partition
- syslog displays error Related to network.service
- Unable to move the OpenManage Server Administrator icon anywhere on the desktop
- ras-mc-ctl command displays DIMM labels related error message
- Limitations
- Resources and support
- Contacting Dell EMC
Network throughput may not be as expected on
Broadcom 25 GB or QLogic 25 GB network cards
Description: On Dell EMC's yx4x PowerEdge R7425, R7415, and R6415 servers, the network throughput may not be as
expected on Broadcom 57414 Dual Port 25 GB or QLogic FastLinQ 41262 Dual Port 25 GB network cards.
Applies to: Red Hat Enterprise Linux 7.4 on Dell EMC's yx4x PowerEdge R7425, R7415, and R6415 servers
Cause: IOMMU queue flush and queue management changes are required.
Workaround: Boot with kernel boot parameter iommu=pt. For more information, see www.support.amd.com/
TechDocs/56224.pdf
Kernel panic occurs with AMD processors on Red Hat
Enterprise Linux 7.4
Description: On Dell EMC's yx4x PowerEdge servers with Advanced Micro Devices (AMD) processor and H330 PERC,
Red Hat Enterprise Linux 7.4 installation stops and results in kernel panic related to memory cgroups.
Applies to: Red Hat Enterprise Linux 7.4
Cause: This issue occurs due to the differences in the NUMA nodes memory layout in AMD platforms.
Workaround: Boot with kernel boot parameter cgroup_disable=memory.
Solution: Update the kernel version to 3.10.0-693.5.2.el7 or later.
Turbostat displays an input/output error with AMD
processor
Description:
On Dell EMC's yx4x PowerEdge servers with Advanced Micro Devices (AMD) processor, if you run the
Turbostat utility with the Debug option, the system displays an input/output error.
Applies to: Red Hat Enterprise Linux 7.4
Cause: Turbostat reads the Intel's model-specific registers (MSRs) on AMD platforms.
Workaround: Use other Command-Line Interface tools such as cpupower.
qede driver probe fails when NIC+RDMA is enabled
NPAR-EP partitions in QL41xxx cards
Description:
On Dell EMC's yx4x PowerEdge servers when NIC+RDMA is enabled in the NPAR-EP partitions in
QL41xxx card series, qede driver probe fails.
Applies to: Red Hat Enterprise Linux 7.4 with firmware version 14.02.15
Cause: Enabling NIC+RDMA in the NPAR-EP partitions creates a resource-shortage with inbox qed drivers
version:8.10.
Workaround: Use QLogic drivers version 8.23 provided by Dell EMC or disable NIC+RDMA in the partitions.
Solution: Update QLogic drivers from www.access.redhat.com/errata/RHEA-2017:3489.
26 Known issues