Hi Francesco, MOM is using it via the balloon_min key in balloonInfo. The policy that does that is part of the vdsm package though: https://gerrit.ovirt.org/gitweb?p=vdsm.git;a=blob;f=static/etc/vdsm/mom.d/02... Best regards Martin On Thu, Jun 8, 2017 at 9:28 AM, Francesco Romani <fromani@redhat.com> wrote:

Hi all,

We have this field in the Vdsm API:

- description: The amount of memory guaranteed to the VM in MB name: memGuaranteedSize type: uint

Available in VmDefinition, VMFullInfo, VmParameters

Vdsm dutifully records and reports this value - but doesn't use it. It is used exactly once for balloon stata:

stats['balloonInfo'].update({ 'balloon_max': str(max_mem), 'balloon_min': str( int(vm.conf.get('memGuaranteedSize', '0')) * 1024), 'balloon_cur': str(balloon_cur), 'balloon_target': str(balloon_target) })

Now, a quick git grep in both MOM and Engine reveals no obvious usages. Am I missing something?

Can we drop this for 4.2, and deprecate it in next(4.1) ?

Thanks,

-- Francesco Romani Senior SW Eng., Virtualization R&D Red Hat IRC: fromani github: @fromanirh

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