[Kimchi-devel] [RFC] - Guest Memory/CPU warning

[Adam King]

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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-- 
Adam King <rak at linux.vnet.ibm.com>
IBM C&SI