[ovirt-users] Feature: Maximum memory size | BUG

[Ladislav Humenik]

Hallo, after engine update to 4.1.2 from 4.0.6 we have following bug

*Your Future Description: *

Maximum memory value is stored in |VmBase.maxMemorySizeMb| property. It 
is validated against range [/memory of VM/, /*MaxMemorySizeInMB/], where 
/*MaxMemorySizeInMB/ is one of |VM32BitMaxMemorySizeInMB|, 
|VM64BitMaxMemorySizeInMB| and |VMPpc64BitMaxMemorySizeInMB| 
configuration options depending on selected operating system of the VM. 
Default value in webadmin UI is 4x size of memory.

During migration of engine 4.0 -> 4.1 all VM-like entities will get max 
memory = 4x memory.

If a VM (or template) is imported (from export domain, snapshot, 
external system) and doesn't have max memory set yet, the maximum value 
of max memory is set (|*MaxMemorySizeInMB| config options).

*Our engine settings:*
[root at ovirt]# engine-config -g VM64BitMaxMemorySizeInMB
VM64BitMaxMemorySizeInMB: 8388608 version: 4.1
VM64BitMaxMemorySizeInMB: 8388608 version: 3.6
VM64BitMaxMemorySizeInMB: 8388608 version: 4.0
[root at ovirt# engine-config -g VM32BitMaxMemorySizeInMB
VM32BitMaxMemorySizeInMB: 20480 version: general

*Template:
*engine=# select vm_guid,vm_name,mem_size_mb,max_memory_size_mb from 
vm_static where vm_name LIKE 'Blank';
                vm_guid                | vm_name | mem_size_mb | 
max_memory_size_mb
--------------------------------------+---------+-------------+--------------------
  00000000-0000-0000-0000-000000000000 | Blank   |        8192 
|              32768
(1 row)

*Created VM*
- expected is mem_size_mb * VM64BitMaxMemorySizeInMB
- we get mem_size_mb * 4 (default)

*Engine: *engine=# select vm_guid,vm_name,mem_size_mb,max_memory_size_mb 
from vm_static where vm_name LIKE 'vm-hotplug%';
                vm_guid                |   vm_name   | mem_size_mb | 
max_memory_size_mb
--------------------------------------+-------------+-------------+--------------------
  254a0c61-3c0a-41e7-a2ec-5f77cabbe533 | vm-hotplug  |        1024 
|               4096
  c0794a03-58ba-4e68-8f43-e0320032830c | vm-hotplug2 |        3072 
|              12288
(2 rows)

*Question:*
It is possible to change this (default * 4) behavior in DB??

Kind Regards,
Ladislav Humenik, System administrator