Apologies, I should also add that the destination node is a new node that was added. Below are the CPU Types: Sources: Intel Westmere IBRS SSBD Family Destination: Intel Broadwell Family I have set the CPU configs on the cluster to Intel Westmere IBRS SSBD Family, after seeing that the destination node was not compatible. Anton Louw Cloud Engineer: Storage and Virtualization ______________________________________ D: 087 805 1572 | M: N/A A: Rutherford Estate, 1 Scott Street, Waverley, Johannesburg anton.louw@voxtelecom.co.za www.vox.co.za From: Anton Louw Sent: 23 October 2020 16:08 To: users@ovirt.org Subject: Manual VM Migration fails Hello Everybody, I am having a strange issue. When I try and manually migrate a VM from one host to another, I get an error stating: "Migration failed (VM: VM1, Source: node6.example.com, Destination: node3.example.com)" I have tried with a few different machines, and it pops up with the same error. I have attached the VDSM logs of both source and destination nodes. The time frame is 16:01 I see the below in that time frame, but not quite sure what I need to change: 2020-10-23 16:01:14,419+0200 ERROR (migsrc/42186f82) [virt.vm] (vmId='42186f82-b84c-7e65-e736-e6331acd04ed') Failed to migrate (migration:450) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 431, in _regular_run time.time(), migrationParams, machineParams File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 505, in _startUnderlyingMigration self._perform_with_conv_schedule(duri, muri) File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 591, in _perform_with_conv_schedule self._perform_migration(duri, muri) File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 525, in _perform_migration self._migration_flags) File "/usr/lib/python2.7/site-packages/vdsm/virt/virdomain.py", line 100, in f ret = attr(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/common/libvirtconnection.py", line 131, in wrapper ret = f(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/common/function.py", line 94, in wrapper return func(inst, *args, **kwargs) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1781, in migrateToURI3 if ret == -1: raise libvirtError ('virDomainMigrateToURI3() failed', dom=self) libvirtError: operation failed: guest CPU doesn't match specification: missing features: spec-ctrl,ssbd