Allocate maximum memory to VM on boot with balloon device

I use Proxmox VE for VPS hosting and am trying to make use of memory overcommitment like other hosting providers do. However, when I set the minimum memory for a VM to be lower than the "Memory", the VM boots with the minimum memory and has its total RAM increased only gradually. This has led to many clients opening support requests as they see less RAM than they have ordered, even though there is plenty of free RAM on the host machine (only 45% of the total memory is used, and there is no...

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