Dell EMC PowerEdge Systems Running SUSE Linux Enterprise Server 15 Release Notes May 2021 Rev.
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Contents Chapter 1: Release summary..........................................................................................................5 Chapter 2: Compatibility............................................................................................................... 6 Supported host operating systems and hypervisors...................................................................................................6 Supported packages................................................................
Dell Controlled Turbo feature is not functional...........................................................................................................18 The operating system installer does not display the MD virtual disks created using Dell EMC Software RAID Controller under the guided setup................................................................................................19 MD RAID layer is not notified of the surprise removal of Samsung NVMe devices........................................
1 Release summary SUSE Linux Enterprise Server 15 (SLES 15) is the next major release from SUSE following on from SLES 12.
2 Compatibility Topics: • • Supported host operating systems and hypervisors Supported packages Supported host operating systems and hypervisors For all the supported host operating systems and hypervisors to run SLES 15 GA guests, see https://www.suse.com/ releasenotes/x86_64/SUSE-SLES/15/#fate-324054. Supported packages For more information on all the changes to packages, such as additions, updates, removals, and changes to the package layout of software, see https://www.suse.
3 New and enhanced in this release The SUSE Linux Enterprise Server 15 release includes changes to installation and the module system such as: ● Unified installer ● Installation without network using Packages media ● Migration from openSUSE Leap to SUSE Linux Enterprise Server ● Extended package search ● Software Development Kit ● Repository Mirroring Tool (RMT) replaces Subscription Management Tool (SMT) For more information on what is new and enhanced in this release, see https://www.suse.
4 Fixes Topics: • • • • • • • • • • • • • • • • • • • • • • • • /var/log/messages displays kernel warning messages in servers with NVDIMM-N persistent memory modules /proc/mdstat and mdadm -D commands display incorrect statuses when two NVMe devices are surprise removed from a RAID 5 MD array BIOS update does not complete when an update is performed using the Linux .BIN files The owsmangencert.
Solution: The nfit.no_init_ars kernel command-line parameter can be passed to prevent the boot-time Long ARS of the operating system. However, the operating system will perform a Short ARS during boot. Systems affected: Dell EMC PowerEdge R750, Dell EMC PowerEdge R750xa, Dell EMC PowerEdge R650.
The owsmangencert.sh script fails and reports an error Description: The following error is displayed when a self-signed certificate is being created for the OpenWSMAN server using the owsmangencert.sh script: Cannot write random bytes: 139974501831104:error:2407007A:random number generator:RAND_write_file:Not a regular file:crypto/rand/ randfile.c:183:Filename=/dev/random Applies to: SUSE Linux Enterprise Server 15 Service Pack 2 Cause: Using /dev/random is deprecated in OpenSSL 1.1.1.
Solution: Use the command lvs -o +lv_health_status to check the status of the RAID array. The command displays the output Partial when a member of the RAID array is removed.
Workaround Before starting SLES 15 installation, pass the Kernel boot parameter: "LIBSTORAGE_MDPART=1". Solution The issue is resolved in SUSE Linux Enterprise Server 15 SP1 Systems affected N/A Tracking number 100806 Running supportconfig reboots the server with AMD processor Description When you run supportconfig on Dell EMC PowerEdge servers with LRDDR4 DIMMs, the system reboots the server. Applies to SUSE Linux Enterprise Server 15 Solution Update the Kernel to kernel-default-4.12.14-25.16.
Unable to create or modify namespace for NVDIMM Description When you create or modify a namespace for NVDIMM, it fails. Applies to SUSE Linux Enterprise Server 15 Workaround Use the "--no-autorelabel" option while creating or modifying the namespace. For example: ● Creating namespace—#ndctl create-namespace -r region0 -m raw -f --noautolabel ● Modifying namespace—#ndctl create-namespace --mode raw -e namespace0.
Tracking number 141837 Servers with the AMD Rome processor are unable to read the boost states using cpupower Description Servers with the AMD Rome processor are unable to read the boost states using the cpupower tool. The cpupower tool is unable to read the mperf/aperf registers in the AMD Rome processor, and thus unable to collect the information about boost states. It reports the number of boost states as zero.
5. Unplug the drive and then plug-in the drive after clearing the event bits. Solution: The issue is resolved in SUSE Linux Enterprise Server 15 SP2.
System crashes when rebooted with SR-IOV-enabled QLogic cards Description When the system is rebooted with SR-IOV-enabled QLogic cards, the system crashes and generates a coredump (vmcore) in /var/crash. Applies to SUSE Linux Enterprise Server 15 SP1 Cause: The system crash is due to an issue in the qede driver. Workaround Disable SR-IOV before rebooting the system.
Systems affected: PowerEdge R6515, PowerEdge R6525, PowerEdge R7515, PowerEdge R7525, and PowerEdge C6525 Tracking number: 125732 After kernel update, the NFIT errors are displayed Description: When a system with NVDIMM-N/AEP is booted into SUSE Linux Enterprise Server 15 SP1, dmesg displays unknown symbol messages. This issue is cosmetic.
5 Known issues Topics: • • • • • vsftpd utility may be terminated by out of memory killer process Dell Controlled Turbo feature is not functional The operating system installer does not display the MD virtual disks created using Dell EMC Software RAID Controller under the guided setup MD RAID layer is not notified of the surprise removal of Samsung NVMe devices Unable to shut down SLES when the graceful shutdown option from iDRAC is selected or when power button is pressed on the server vsftpd utility may
The operating system installer does not display the MD virtual disks created using Dell EMC Software RAID Controller under the guided setup Description If MD virtual disks are created using Dell EMC Software RAID Controller on a hard disk that is not formatted before installation, the operating system installer may not display the MD virtual disks under the guided setup. For more information, see https://www.suse.com/support/kb/doc/?id=000019839.
NOTE: The workaround may not work when the system is locked. Gnome prevents accidental shutdown when the system is locked. As a security precaution, Gnome does not allow any power related actions such as shutdown from any system management interfaces like iDRAC or when the power button is pressed unless the user is active and logged-in to OS.
6 Limitations This section summarizes the various limitations that exists in SUSE Linux Enterprise Server 15 GA. ● For information on Kernel limitations, see https://www.suse.com/releasenotes/x86_64/SUSE-SLES/15/#TechInfo.Kernel. ● For information on KVM limitations, see https://www.suse.com/releasenotes/x86_64/SUSE-SLES/15/#TechInfo.KVM. ● For information on Xen limitations, see https://www.suse.com/releasenotes/x86_64/SUSE-SLES/15/#TechInfo.XEN.
7 Instructions for installing and upgrading SLES Topics: • • • • Downloading SLES Installation prerequisites Installation process Upgrade process Downloading SLES You can standardize on SUSE Linux Enterprise with expanded support by downloading SLES 15 at https://www.suse.com/ download-linux/. Installation prerequisites Minimum Linux server system requirements ● Local installation: 1024 MiB RAM, and 512 MiB Swap recommended ● 2 GiB available disk space (more disk space recommended, 8.
● For detailed information on upgrade related information for SUSE Linux Enterprise Server 15 GA, see https:// www.suse.com/releasenotes/x86_64/SUSE-SLES/15/#InstUpgrade.Upgrade.
8 Resources and support Topics: • • • • Related documentation for Linux Documentation resources Identifying the series of your Dell EMC PowerEdge servers Downloading the drivers and firmware Related documentation for Linux NOTE: For all PowerEdge and PowerVault documentation, go to Dell.com/poweredgemanuals and Dell.com/ powervaultmanuals. Enter the system Service Tag to get your system documentation.
Table 1. Additional documentation resources for your server (continued) Task Document Location Integrated Dell Remote Access Controller User's Guide. For information about installing Dell.com/operatingsystemmanuals the operating system, see the operating system documentation. Managing your server For information about understanding Remote Access Controller Admin (RACADM) subcommands and supported RACADM interfaces, see the RACADM Command Line Reference Guide for iDRAC. Dell.
Table 1. Additional documentation resources for your server (continued) Task Document Location (CMC), see the CMC User’s Guide. Working with the Dell EMC PowerEdge RAID controllers For information about Dell.com/storagecontrollermanuals understanding the features of the Dell EMC PowerEdge RAID controllers (PERC) and deploying the PERC cards, see the Storage controller documentation.
● 1 ̶ one socket server ● 2 ̶ two socket server Table 2.
9 Contacting Dell EMC Dell EMC provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell EMC for sales, technical support, or customer service issues, go to www.dell.com/contactdell. If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill, or the product catalog.
