Bug 859732

Summary:	Quota calculation need to be explained
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	ofri <omasad>
Component:	Documentation	Assignee:	Tim Hildred <thildred>
Status:	CLOSED CURRENTRELEASE	QA Contact:	ecs-bugs
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	3.1.0	CC:	acathrow, dfediuck, dyasny, gklein, jskeoch, yeylon
Target Milestone:	---	Flags:	omasad: needinfo-
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-12-04 17:21:59 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description ofri 2012-09-23 15:44:32 UTC

Since quota calculation differs from the actual storage usege visable to the user, the quota calculation logic need to be explained.

Comment 3 Tim Hildred 2012-09-25 01:34:07 UTC

From emails from Ofri and Gilad:

> > Here is what i think is missing:
> >
> > ************************
> > Quota accounting:
> > After a quota was assigned to a costumer or a resource, each action

/s/costumer/consumer

> > by that user or on that resource that involves storage, vcpu or
> > memory will result in quota consumption or quota release. For
> > example: when a user runs a VM with 1 vcpu and 1024MB memory – the
> > action will consume 1 vcpu and 1024MB of the quota assigned to that
> > user. When The VM will be stopped 1 vcpu and 1024MB will be
> > released
> > back to the quota assigned to that user (Note that Run-time Quota
> > consumption is accounted only during the actual run-time of the
> > consumer).
> > Since the quota acts as an upper bound which limits the user's
> > resources, the quota calculations may differ from the actual
> > current
> > use of the user. The quota is calculated for the max growth
> > potential and not the current usage. For example: if a user creates
> > a virtual thin provision disk of 10GB, the actual disk usage may
> > indicate only 3GB of that disk are actually in use. The quota
> > consumption, however, would be 10GB (The max growth potential of
> > that disk).

Comment 4 Tim Hildred 2012-09-28 07:39:22 UTC

Added new topic to admin guide:
Quota Accounting [11740]

Comment 7 Tim Hildred 2012-10-08 00:57:41 UTC

Yes. And it should say virtual machine instead of VM. 

I'll fix it now. 

Moving to MODIFIED until I can stage it again.

Comment 8 Tim Hildred 2012-10-30 02:07:19 UTC

Red_Hat_Enterprise_Virtualization-Administration_Guide-3.1-en-US-2-103

http://documentation-devel.engineering.redhat.com/docs/en-US/Red_Hat_Enterprise_Virtualization/3.1/html-single/Administration_Guide/index.html#Quota_Accounting