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.

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Best regards
Alexey