Dynamic Memory Increase says VM needs to reboot
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Hello,
I am running a Linux box on XCP-NG 8.2.1 that shows the tools in use, and when I try to change the VM's dynamic memory, it says it needs to be rebooted. Am I missing something?

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Hi,
Are you changing the static or dynamic range?
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@olivierlambert Dynamic.

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You are asking to grow the RAM beyond the dynamic limits, so it needs to modify the static values. See static at 16GiB Max, so going to 32GiB in dynamic needs to also grow static to 32GiB, explaining the reboot needed.
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@olivierlambert ok, i see my order of operations is wrong. Thank you for the help.
So quick question about memory ballooning since we're talking about memory. I assume you can over-subscribe memory? This would be done with the dynamic ranges?
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Yes, and then Xen will reduce the RAM if there's not enough available to boot a new VM (reducing down to dynamic min).
Static means it can't be changed live, while dynamic can.