Indeed, after edit HE VM settings via manager UI, ovf update triggered immediately (checked in /var/log/ovirt-engine/engine.log).
I dumped HE ovf_store and untar <he_vm_id>.ovf fom it.
And i checked that all changes i made for Descriprion, MaxMemorySizeMb, minGuaranteedMemoryMb 
applyed (written to ovf) and remains after reboot. It works as expected.
But not for memory or Memory Size - this settings remained initial and not written to ovf. 
Well, memory hotplug works - via adding new memory devices, but after reboot this memory devices detached but Memory Size not increased.

--
Best regards
Alexey

Actually, you need to untar the OVF from the shared storage and check the configuration from the tar.
Just keep it like that (running ) and tomorrow power down and then up the HostedEngine.

Best Regards,
Strahil Nikolov

On May 30, 2019 12:06, "Valkov, Alexey" <Valkov.Alexey@knauf.ru> wrote:
Hello, Strahil. I've just tried with engine-config -s OvfUpdateIntervalInMinutes=1 systemctl restart ovirt-engine.service After that, i changed Memory Size in manager UI. And waited about 30 minutes. Then checked memSize in /var/run/ovirt-hosted-engine-ha/vm.conf (which if i right understand syncronized with ovf every minute) and saw memSize have not been changed. And Memory Size property (in manager UI) also remains initial. Thus i think that ovf dont changes. I return OvfUpdateIntervalInMinutes=60 and will wait till tomorrow, may be the setting will be magically aplyed.

--
Best regards
Alexey

Hi Alexey,
How much time did you check before rebooting.
I have noticed ,that despite the default OVF update interval of 1 hour, it takes 5-6 hours for the engine to update the OVF.

Best Regards,
Strahil Nikolov

On May 30, 2019 10:30, "Valkov, Alexey" <Valkov.Alexey@knauf.ru> wrote:
I try to increase memory of HE VM (oVirt 4.2.8). If i do it from manager UI, i see that hot plug works - new memory devices appear and corresponding memory increase appeares inside engine guest. But 'Memory Size' property of hosted engine (in manager UI) don't reflect that new amount of memory. Also after reboot of engine vm, memory size changes back to initial value. Is it possible to change memory size of HE vm ( as far as i know the settings stored in ovf on HE domain) and how i can make this change to be persistent.

--
Best regards
Alexey

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