David Vallee Delisle 050c9aa99f [train-only] post stack creation tsx validation ... RHEL-8.3 kernel disabled the Intel TSX (Transactional Synchronization Extensions) feature by default as a preemptive security measure, but it breaks live migration from RHEL-7.9 (or even RHEL-8.1 or RHEL-8.2) to RHEL-8.3. Operators are expected to explicitly define the TSX flag in their KernelArgs for the compute role to prevent live-migration issues during the upgrade process. This is explained in detail in this article [a] If operators don't want to add the TSX flag to the KernelArgs, they can always set "ForceNoTsx" to true. Adding this mandatory validation right after the stacks are updated is probably the earliest place where we can validate and fail if necessary. We'd rather fail quickly than too late as this will provide the best experience for our users. In addition to this, there's a tripleo-validation [b] in the work. This is meant to be train-only for now but we will have to refactor if (when?) we support FFU from queens to Wallaby+ [a] https://access.redhat.com/solutions/6036141 [b] https://review.opendev.org/c/openstack/tripleo-validations/+/790806 Co-Authored-By: Martin Schuppert <mschuppert@redhat.com> Related: https://bugzilla.redhat.com/1923165 Closes-Bug: #1916758 Change-Id: I35246fbf74394f6e315973283464085d2aef08b2		2021-05-17 16:38:23 -04:00
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notes	[train-only] post stack creation tsx validation	2021-05-17 16:38:23 -04:00
source	Bump the openstackdocstheme extension to 1.20	2019-08-01 09:49:37 +08:00