Ubuntu Server 20.04 LTS for Dell EMC PowerEdge Servers Release Notes December 2020 Rev.
Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents Chapter 1: Release summary..........................................................................................................4 Version....................................................................................................................................................................................4 Release date........................................................................................................................................................................
1 Release summary Topics: • • • Version Release date Priority and recommendations Version Ubuntu Server 20.04 LTS Release date September 2020 Priority and recommendations RECOMMENDED: Dell EMC highly recommends applying this update as soon as possible. The update contains changes to improve the reliability and availability of your Dell EMC system.
2 Compatibility Topics: • Supported systems Supported systems yx4x and yx5x Dell EMC PowerEdge servers.
3 New and enhanced in this release For information about the new and enhanced features of Ubuntu 20.04 LTS, see www.ubuntu.com/server.
4 Important notes The default server ISO image is the general availability (GA) kernel-Linux 5.4. To download Ubuntu Server installer media and ISO images, go to www.ubuntu.com/download/server. Links to download Ubuntu Server 20.04.1 LTS and the canonical Ubuntu 20.04 release notes are found on this page. NOTE: By default, the Subiquity installer download is available. Ubuntu 20.04 does not support the Debian-installer.
5 Known issues Topics: • • • • • • • • The name of the NVMe device may change when it is hot-inserted after a surprise removal NVMe devices are enumerated in namespace 2 when hot-inserted into the server after being surprise removed /proc/mdstat and mdadm -D commands display incorrect statuses when two NVMe devices are surprise removed from a RAID 5 MD array Status of the RAID 0 LV is displayed as Available when one of the members of the RAID array is surprise removed BIOS Dell Update Packages (DUPs) will
/proc/mdstat and mdadm -D commands display incorrect statuses when two NVMe devices are surprise removed from a RAID 5 MD array Description: When two of three NVMe devices are surprise removed from a RAID 5 MD array, the command cat/ proc/mdstat displays the array status incorrectly as active. Similarly, when the status of the MD RAID is queried using the mdadm -D /dev/mdNcommand, the number of active and working devices displayed is two. Only the status of the array reported is incorrect.
Ubuntu Server 20.04 live image installation fails due to a loss of network connectivity Description The Ubuntu Server 20.04 live image installation fails due to a loss of network connectivity. The live image is designed to update all the packages to the latest version and then proceed with installation. Solution For seamless installation of Ubuntu Server 20.04, at least one network connection is required. Systems affected All yx4x and yx5x Dell EMC PowerEdge servers. Applies to Ubuntu 20.
Tracking number 172420 Known issues 11
6 Limitations ● Installing a graphical user interface on servers is not recommended by Ubuntu. For more information, see https:// help.ubuntu.com/community/ServerGUI. ● Dell EMC PowerEdge RAID Controller S150 is not supported on Ubuntu 20.04 LTS. For more information about the limitations of this release, see Ubuntu 20.04 (Focal Fossa) Release Notes.
7 Updating Ubuntu For instructions on how to update Ubuntu 20.04 from Ubuntu 18.04, see www.help.ubuntu.com/community/FocalUpgrades.
8 Resources and support For more information about the features of this release, see www.wiki.ubuntu.com/FocalFossa/ReleaseNotes#Ubuntu_Server. Topics: • • • • Identifying the series of your Dell EMC PowerEdge servers Latest Release Notes Related documents and links Accessing documents using product selector Identifying the series of your Dell EMC PowerEdge servers The PowerEdge series of servers from Dell EMC are divided into different categories based on their configuration.
Table 1. PowerEdge servers naming convention and examples YX3X servers YX4X systems YX4XX systems YX5XX PowerEdge M630 PowerEdge M640 PowerEdge R6415 PowerEdge R6515 PowerEdge M830 PowerEdge R440 PowerEdge R7415 PowerEdge R7515 PowerEdge T130 PowerEdge R540 PowerEdge R7425 PowerEdge R6525 Latest Release Notes To access the latest Release Notes for this version: 1. Go to www.dell.com/support/home/en-us/products/software_int/software_operating_systems. 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 contact information on your purchase invoice, packing slip, bill, or the product catalog.
