I would suggest an improvement on your b options to be c: change from a text input box to selection list, and only offer valid choices. On 4/24/2014 11:20 AM, Rodrigo Trujillo wrote:
Hi all,
we have recently merged the patches that allow user to change guest memory and cpu. When user change this parameters, we have some problems:
1- If user assigned more virtual cpus than the amount in the host and start the VM, VM will start normally, but the host server will have the performance heavily declined.
2- If user assigned more virtual memory than the physical amount in the host, the VM does not start and qemu throws an exception like "Cannot allocate memory."
Solutions:
1a - Show the number of host physical CPUs in edit Template and edit Guest windows, then warn the user if he assigns a higher number 1b - Show the number of host physical CPUs in edit Template and edit Guest windows, then does not allow to set up a higher number (generate a error during edition)
2a - Show the host MEMORY amount in edit Template and edit Guest windows, then warn the user if he assigns a higher number 2b - Show the host MEMORY amount in edit Template and edit Guest windows, then does not allow to set up a higher number (generate a error during edition)
- A third option would be check the numbers before start a guest and warn the user, or does not allow the vm to be started.
I would like to implement 1a and 2b. Do you have any thoughts or concerns/suggestions ?
Rodrigo Trujillo
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