[Users] Quota for VMs created from templates

Mon Oct 7 11:43:53 UTC 2013

----- Original Message -----
> From: "Mitja Mihelič" <mitja.mihelic at arnes.si>
> To: "Gilad Chaplik" <gchaplik at redhat.com>
> Cc: "Einav Cohen" <ecohen at redhat.com>, users at ovirt.org
> Sent: Monday, October 7, 2013 1:30:34 PM
> Subject: Re: [Users] Quota for VMs created from templates
> 
> On 10/06/2013 11:30 AM, Gilad Chaplik wrote:
> > Einav, Thanks for the questions, see inline.
> >
> >> @Gilad:
> >>
> >> 1. Does the 'VmCreator' Role contain the 'consume-quota' action? so when
> >> granting "VmCreator"
> >> on Data Center "DC1" to user "User1", "User1" can automatically consume
> >> any
> >> quota defined
> >> in "DC1" (including, for example, "TemplateQuota", in Mitja's case)?
> > No, only SuperUser and DataCenterAdmin roles contains consume_quota action.
> >
> >> 2. Related to both your previous reply and my previous reply: Can a user
> >> associate a CPU/RAM
> >> Quota to a VM that he is now *creating*, even if he doesn't have
> >> consume-quota permissions
> >> on that CPU/RAM Quota? In Mitja's case, he attempted to create a VM
> >> associated with both
> >> "TemplateQuota" and "UserQuota", while the user (maybe - depends on answer
> >> to
> >> 1) didn't
> >> have permission to consume "TemplateQuota", and the VM creation succeeded.
> >> Is
> >> that OK?
> > Yes, you should be able to assign a VM to a CPU/RAM quota, without
> > being a consumer of that quota, the check is done only when running the VM
> > (when the resources are consumed).
> >
> > There is a difference between User and Admin Portal: in User portal quota
> > list is being
> > populated by quota that can be consumed by the user, so leaving the quota
> > unchanged will selected an appropriate
> > quota; also while creating a VM, disk's quota is set in 'Resource
> > Allocation' tab (see image).
> >
> > @Mitja,
> >
> > Please check which quota(s) are assigned to VM while consuming the
> > resources,
> > and who is the user performing the task.
> All tasks are performed by the same user (Helpdesk User).
> 
> Quotas assigned to VM by default at creation time:
> - RAM/CPU - TemplateQuota (as displayed in User Portal->htvm10->General)
> - disk - UserQuota (as displayed in User Portal->htvm10->Disks and then
> Edit on the disk)
> 
> Quotas assigned to VM after power-on:
> - RAM/CPU - TemplateQuota (as displayed in User Portal->htvm10->General)
> - disk - UserQuota (as displayed in User Portal->htvm10->Disks and then
> Edit on the disk)
> 
> Please see the screenshots of the quota/resources consumed by the VM.
> 
> In the Admin portal, I could see, that TemplateQuota (CPU/RAM) was
> consumed when the VM was started by the user.
> 
> Regards,
> Mitja

Mitja, 

Thank you for the detailed description (a picture worth a thousand words), 
now it seems like a bug :-) let me just confirm and get back to you.

Thanks, 
Gilad.

> >
> >> [if the answer to both questions is "no", there is a chance that Mitja
> >> discovered a bug]
> >>
> >> ----
> >> Thanks,
> >> Einav
> >>
> >>
> >> ----- Original Message -----
> >>> From: "Mitja Mihelič" <mitja.mihelic at arnes.si>
> >>> To: "Einav Cohen" <ecohen at redhat.com>
> >>> Cc: users at ovirt.org
> >>> Sent: Friday, October 4, 2013 8:14:10 AM
> >>> Subject: Re: [Users] Quota for VMs created from templates
> >>>
> >>> In addition to the described setup:
> >>> The user was also given a permission on the data center with the role
> >>> VmCreator.
> >>> The user is not listed as a consumer of TemplateQuota, but they have an
> >>> inherited role VmCreator in the permissions tab.
> >>> Could this permission be the reason the user can create and run VMs that
> >>> are associated with TemplateQuota?
> >>>
> >>> Regards,
> >>> Mitja
> >>>
> >>> --
> >>> Mitja Mihelič
> >>> ARNES, Tehnološki park 18, p.p. 7, SI-1001 Ljubljana, Slovenia
> >>> tel: +386 1 479 8877, fax: +386 1 479 88 78
> >>>
> >>> On 10/03/2013 05:06 PM, Einav Cohen wrote:
> >>>> AFAIK, a user cannot create a VM that is associated with one (or more)
> >>>> quota objects on which he doesn't
> >>>> have consumer permissions.
> >>>> i.e. if the VM was created successfully by the user, and this VM is
> >>>> associated with TemplateQuota, and
> >>>> with the quota that has been created for the user (let's call it
> >>>> UserQuota), it means that the user has
> >>>> consumer permissions on both TemplateQuota and UserQuota.
> >>>> If the user doesn't have permissions on one of these Quota objects - the
> >>>> fact that the VM has been created
> >>>> successfully sounds like a bug to me.
> >>>>
> >>>> ----
> >>>> Thanks,
> >>>> Einav
> >>>>
> >>>> ----- Original Message -----
> >>>>> From: "Mitja Mihelič" <mitja.mihelic at arnes.si>
> >>>>> To: users at ovirt.org
> >>>>> Sent: Thursday, October 3, 2013 9:59:06 AM
> >>>>> Subject: [Users] Quota for VMs created from templates
> >>>>>
> >>>>> Hi!
> >>>>>
> >>>>> We are running engine version 3.3.0 on CentOS6 and we have come across
> >>>>> a
> >>>>> problem, possibly a bug.
> >>>>> When a user creates a VM from a template, the template's quota is
> >>>>> assigned to the VM.
> >>>>>
> >>>>> Here is the setup:
> >>>>> - quota is set to Enforced on the data center
> >>>>> - quota is created for template purposes (TemplateQuota)
> >>>>> - a template is created from a sealed VM with TemplateQuota assigned to
> >>>>> it
> >>>>> - quota is created for a user, the user is set as its consumer
> >>>>> - the user creates a VM from the mentioned template and leaves the
> >>>>> quota
> >>>>> unchanged
> >>>>> - the created VM consumes the user's storage quota but does not consume
> >>>>> their memory and CPU quota
> >>>>>
> >>>>> This way a user can create and run an arbitrary number of VMs as long
> >>>>> they stay within their storage quota.
> >>>>> No errors are reported in the logs.
> >>>>>
> >>>>> Kind regards,
> >>>>> Mitja Mihelic
> >>>>>
> >>>>> --
> >>>>> --
> >>>>> Mitja Mihelič
> >>>>> ARNES, Tehnološki park 18, p.p. 7, SI-1001 Ljubljana, Slovenia
> >>>>> tel: +386 1 479 8877, fax: +386 1 479 88 78
> >>>>>
> >>>>>
> >>>>> _______________________________________________
> >>>>> Users mailing list
> >>>>> Users at ovirt.org
> >>>>> http://lists.ovirt.org/mailman/listinfo/users
> >>>>>
> >>>
> >>> _______________________________________________
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> >>>
> 
>