On 26 Jul 2017, at 14:59, Ladislav Humenik <ladislav.humenik@1und1.de> wrote:
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@ovirt]# engine-config -g VM64BitMaxMemorySizeInMB VM64BitMaxMemorySizeInMB: 8388608 version: 4.1 VM64BitMaxMemorySizeInMB: 8388608 version: 3.6 VM64BitMaxMemorySizeInMB: 8388608 version: 4.0 [root@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??
Hi, no, not really, it’s just a UI-side default suggestion. In API you supply it yourself in the request, any value you would want. It just limits the max hotpluggable amount of memory Thanks, michal
Kind Regards, Ladislav Humenik, System administrator
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