Memory range fragmentation bug ("Failed to get Memory Geometry") [Hyper-V bug]

[vivianezw]

This is an unfixable Hyper-V bug.

It happens only on Hyper-V VMs with "Dynamic Memory" enabled. The memory ranges will fragment after a while leading to thousands of memory ranges. (reported: up to 8000!) It's not only bad for memory dumping, it's generally bad.

Can be avoided by making sure the "Dynamic Memory" setting is disabled. It can be disabled at any time, but the machine needs to be powered down.