Hello, thank you for fast response.
The point of changing the max_mem_size is little tricky, as we have
environments with together ~13k VMs running on top of ovirt, no kidding
:) and currently doing upgrades from 3.6 > 4.1. So we can easy set those
values to the needed ones for every VM, thats not a big deal.
However, I was just hoping it is editable without changing/modifying our
current API calls, for any newly created VM (as this is the reason for
asking for help), somewhere in engine-config or in DB.
I'll just opened an RFE https://bugzilla.redhat.com/show_bug.cgi?id=1475382
Best regards,
Ladislav Humenik
On 26.07.2017 15:58, Michal Skrivanek wrote:
On 26 Jul 2017, at 16:50, Jakub Niedermertl <jnied...@redhat.com
<mailto:jnied...@redhat.com>> wrote:
Hello Ladislav,
the function computing size of default maximum memory size is
currently not configurable from DB.
If you want it to be so please feel free to file an RFE [1].
[1]: https://bugzilla.redhat.com/enter_bug.cgi?product=ovirt-engine
Best regards,
Jakub
On Wed, Jul 26, 2017 at 1:59 PM, Ladislav Humenik
<ladislav.hume...@1und1.de <mailto:ladislav.hume...@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??
if the issue is with GUI then setting the max memory in the template
would be inherited to all VMs from that template, you can even change
that in “Blank” I think, Jakube?
That’s for the default case, you can change that any way you like for
the concrete VM you’re creating.
if the issue is with API you can simply provide any number for the max
mem in all the requests
the VM[64|32]BitMaxMemorySizeInMB values are for the total maximum the
particular qemu we ship supports, it’s not anything you should need to
change.
Thanks,
michal
Kind Regards,
Ladislav Humenik, System administrator
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