Re: [ovirt-users] Hot Memory add and Physical Memory guaranteed

"Luca 'remix_tj' Lorenzetto" <lorenzetto.luca@gmail.com> writes:

i just tested the memory hot add to a vm. This vm had 2048 MB. I set the new memory to 2662 MB. I logged into the vm and i've seen that hasn't been any memory change, even if i said to the manager to apply memory expansion immediately.

Memory shown by free -m is 1772 MB.

[...]

forgot to say that is a RHEL 7 VM and has the memory baloon device enabled.

This is normal with memory balloon enabled – memory balloon often "consumes" the hot plugged memory, so you can't see it. Regards, Milan