3.9. Red Hat Virtualization Batch Update 8 (ovirt-4.1.9)

3.9.1. Enhancements

This release of Red Hat Virtualization features the following enhancements:
You can now use key=key=value format (where the value of a fence option key is itself in a key=value format) when setting fence agent options, in order to support old drac5 devices that require "ssh_options=-oCiphers=+3des-cbc" in the Options field to enable no-longer-enabled-insecure ciphers for SSH connection.
otopi now optionally logs the list of network connections on the machine after failures. Enable this by installing the optional otopi-debug-plugins package. This can help debug failures to start network services due to "Address already in use" errors.
Proton is a high performance, lightweight messaging library. It can be used in the widest range of messaging applications including brokers, client libraries, routers, bridges, proxies, and more. Proton is based on the AMQP 1.0 messaging
standard. Proton enables integration with the AMQP 1.0 ecosystem from any platform, environment, or language.
Katello Agent is included in RHV and RHVH, and installed on the hosts during deployment. Katello Agent provides a list of the installed RPMs, for better integration with Satellite.
otopi's yum plugin is now more verbose, also logging all RPM scriptlets' output. This can help debug failures caused by errors from such scriptlets.
This update adds IBRS-enabled CPU Models to clusters, which can be used to mitigate Spectre vulnerability in guests. See https://access.redhat.com/solutions/3307851 for more information.
The Software subtab in the Host General pane now contains a new "Kernel Features" field showing the PTI, IBPB, and IBRS kernel features of the host system, if the information is available. The Virtual Machine General pane now contains a new "Guest CPU Type" field showing the guest machine CPU type. These can be used to easily recognize if meltdown fixes are applied. For more info on meltdown patches detection, see https://access.redhat.com/solutions/3317841.
When live or cold merge fails, snapshot disks may be left in an illegal state. If virtual machines with illegal snapshot disks are shut down, they will not re-start. Virtual machines with illegal snapshot disks are now marked with an exclamation mark and a warning message not to shut them down.

3.9.2. Known Issues

These known issues exist in Red Hat Virtualization at this time:
Previously, having an empty VM directory in the export domain caused an error when trying to read the VMs stored in it, resulting in endless SPM re-elections. Now, this issue no longer causes SPM re-election. To fix the VM list loading error, you must remove the empty directory manually.

3.9.3. Deprecated Functionality

The items in this section are either no longer supported or will no longer be supported in a future release
The kernel no longer supports the /sys/block/dm-X/queue/discard_zeroes_data file in sysfs. It is therefore no longer possible to determine whether discarded blocks from a block device returns zeros or the actual data. Therefore, the virtual machine disk properties "Wipe After Delete" and "Enable Discard" are no longer supported at the same time.