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Hyper-V host reboots during live migration

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Hi, I have a two node failover cluster (DELL R815),  they have direct attached storage and they are connected to a 10Gb fiber switch (domain network), then a cable connects the two nodes directly through integrated 1Gb ports (live migration network) . When I migrate VMs, the destination host reboots at a certain point, no matter if I move VMs manually or if I do pause --> drain roles.  The dump shows an error on evbda.sys that seems related to Broadcom drivers, but I tried to perform live migration on both networks and it always fails. I have around 25 VMs, it crashes at about 18-20 VMs, I thought it could be some defective ram modules, but I ran several memory tests and stress tests without results. I also tried to update network drivers to the latest release (now called QLogic) with no luck. I read somewhere to disable VMq, I tried it on 1Gb network with no luck.

I really don't know how to proceed in diagnostic. Hosts are patched (one is really full patched, the other is a few months back because I can't migrate VMs to patch it!)

Thank you


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