[ovirt-devel] Memory size (1024MB) cannot exceed maximum memory size (0MB).] - when trying to create an instance type

[Juan Hernández]

On 12/25/2017 05:46 PM, Yaniv Kaul wrote:
> While trying to add an instance type, I fail with the error:
> Operation Failed". Fault detail is "[Cannot add Template. Memory size
> (1024MB) cannot exceed maximum memory size (0MB).]
> 
> The code is taken from the example in the SDK, so I'm not sure what I'm
> doing wrong here.
> Code:
>          instance_types_service.add(
>              types.InstanceType(
>                  name='myinstancetype',
>                  description='My instance type',
>                  memory=1 * 2**30,
>                  high_availability=types.HighAvailability(
>                      enabled=True,
>                  ),
>                  cpu=types.Cpu(
>                      topology=types.CpuTopology(
>                          cores=2,
>                          sockets=2,
>                      ),
>                  ),
>              ),
>          )
> 
> 
> engine.log:
> 2017-12-25 10:58:19,825-05 INFO
> [org.ovirt.engine.core.bll.AddVmTemplateCommand] (default task-13)
> [265ff704-d89f-471b-8207-fc0e1b8816fd] Lock Acquired to object
> 'EngineLock:{exclusiveLocks='[myinstancetype=TEMPLATE_NAME,
> 703e1265-e160-4a76-82e6-06974156b7b9=TEMPLATE]', sharedLocks='[]'}'
> 2017-12-25 10:58:19,831-05 WARN
> [org.ovirt.engine.core.bll.AddVmTemplateCommand] (default task-13)
> [265ff704-d89f-471b-8207-fc0e1b8816fd] Validation of action 'AddVmTemplate'
> failed for user admin at internal-authz. Reasons:
> VAR__ACTION__ADD,VAR__TYPE__VM_TEMPLATE,ACTION_TYPE_FAILED_MAX_MEMORY_CANNOT_BE_SMALLER_THAN_MEMORY_SIZE,$maxMemory
> 0,$memory 1024
> 2017-12-25 10:58:19,832-05 INFO
> [org.ovirt.engine.core.bll.AddVmTemplateCommand] (default task-13)
> [265ff704-d89f-471b-8207-fc0e1b8816fd] Lock freed to object
> 'EngineLock:{exclusiveLocks='[myinstancetype=TEMPLATE_NAME,
> 703e1265-e160-4a76-82e6-06974156b7b9=TEMPLATE]', sharedLocks='[]'}'
> 2017-12-25 10:58:19,839-05 DEBUG
> [org.ovirt.engine.core.common.di.interceptor.DebugLoggingInterceptor]
> (default task-13) [265ff704-d89f-471b-8207-fc0e1b8816fd] method: runAction,
> params: [AddVmTemplate,
> AddVmTemplateParameters:{commandId='179df9ed-209c-4882-a19a-b76a4fe1adb8',
> user='null', commandType='Unknown'}], timeElapsed: 33ms
> 2017-12-25 10:58:19,846-05 ERROR
> [org.ovirt.engine.api.restapi.resource.AbstractBackendResource] (default
> task-13) [] Operation Failed: [Cannot add Template. Memory size (1024MB)
> cannot exceed maximum memory size (0MB).]
> 
> 
> TIA,
> Y.
> 

I think this is related to the new `memory_policy.max` attribute that 
was introduced in 4.1. I think that for virtual machines it has a 
default value so that it isn't necessary to explicitly provide it. It 
may not have a default value fro instance types. Can you try adding this 
to the request to create the instance type?

   memory_policy=types.MemoryPolicy(
     max=1 * 2**30
   )

Then try again. If it works I think that we need to fix the engine so 
that it assigns a default value, like it does for virtual machines.