@carloum70 I can't really help you with anything specific but I must make a note that when analyzing network setup you must also take into account the Open vSwitch. Looking at the classic Linux networking, bridging and routing facilities is not enough to get you the full picture. For example, if I remember correctly, Active-Active bonding (non LACP) is implemented by Open vSwitch with so called balance-slb mode. This mode is not available with classic Linux kernel bonding options. What you are seeing (duplicated IPs) is maybe perfectly normal for this kind of setup with Open vSwitch. I would search for the cause of the issue somewhere else like network congestion. Heart beats are very sensitive to network congestion and can easily fail if you do not dedicate network links for this kind of traffic. If you are sharing the links over which heart beats are sent with some high traffic stuff (storage maybe?), it can easily make problems. UPDATE: unfortunately I don't have access to these kind of bonded setups any more so I can't check if the configuration differs in any way from yours. My home lab thingies are single network interface only.

@poddingue Thanks for taking a look. Yes it is this part that tells me that it should start the VM automatically once the import has completed. "After the transfer, the VM on XCP-ng side is started:" Followed by, "This process is fully automated, without any human intervention after it starts on step 1." [image: image.jpeg] https://docs.xcp-ng.org/installation/migrate-to-xcp-ng/ But my findings/experience is that the VM does not start once the import/transfer has completed. So either the docs are wrong. Or the function is not behaving as intended. I'm acctually fine either way. As long as I know what to expect. However, I would like to have it auto-start the VMs after transfer completion. Which would make the procedure "Fully automated". Update: Am I assuming correctly that "the XO V2V guide says to start the VM yourself once the migration is complete " you're reffering to, is part of the "test migration"-procedure? Not the acctual production mgiration? Because: "Final migration Run the production migration When you're ready for the final migration: Shut down the source VM completely. Start the V2V migration in Xen Orchestra with the Stop source option enabled. This ensures the final sync happens while the VM is powered off, and prevents any inconsistencies." In my mind doesn't state that the VM should be started manually post-transfer. Great thanks in advance for discussing! Cheers!

@poddingue Turns out it is all secondary-to-secondary out of sync. So that makes it less intense, though if primary dies I wonder how it will resolve this, or if it will become split brained. Still unsure of how it happened, but the ones I manually cleaned up have not come back. Going to continue to manually clear them up. If it happens again I will have an alert setup to notify me, and I have all the xcp-ng logs and everything to be able to see what happened. If that happens I will post here with details and logs for the resource so we can see how it occurs. [image: image.jpeg]

Hello @poddingue Thanks for your investigation, this confirm my guess. I removed them manually to reclaim disk space. But in my opinion, the health should detect "useless directory". in the vdi directories. But this is "required" only if the backup metadata was clean without the directory cleaned.

@ronan-a For testing purposes, I did the following: I created a VM on the local SR of a host, installed Linux on it, and configured an ISCSI target. I then added that ISCSI target as an ISCSI SR within xcp-ng pool, and created a small VM on that repository, using XO. While the machine was running, I performed a migration without losing a single ping.I assume this confirms my previous assertion regarding the use of a standard storage system.

Thanks, @Jonathon !