Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

Bug 1054175

Summary:	Missing storage allocation checks when running a stateless VM
Product:	[Retired] oVirt	Reporter:	Allon Mureinik <amureini>
Component:	ovirt-engine-core	Assignee:	Vered Volansky <vered>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Elad <ebenahar>
Severity:	high	Docs Contact:
Priority:	high
Version:	3.4	CC:	acanan, amureini, bugs, dfediuck, ebenahar, eedri, gklein, iheim, jkt, lpeer, nlevinki, obasan, rbalakri, Rhev-m-bugs, scohen, vered, yeylon
Target Milestone:	---
Target Release:	3.5.0
Hardware:	Unspecified
OS:	All
Whiteboard:	storage
Fixed In Version:	ovirt-3.5.0_rc1	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	960934	Environment:
Last Closed:	2014-10-17 12:35:54 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Storage	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1149809, 1178022
Bug Blocks:	960934

Description Allon Mureinik 2014-01-16 11:56:08 UTC

+++ This bug was initially created as a clone of Bug #960934 +++

When a VM is run as stateless, temporary volumes are created for each disk leaf. These are their storage requirements:

      | File Domain                             | Block Domain
 -----|-----------------------------------------|-------------
 qcow | 1M (header size)                        | 1G
 -----|-----------------------------------------|-------------
 raw  | preallocated: disk capacity (getSize()) | disk capacity
      | thin (sparse): 1M                       | (there is no raw sparse on 
                                                   block domains)

Comment 1 Vered Volansky 2014-07-14 16:01:21 UTC

Also created are two temporary memory volumes.

Comment 2 Vered Volansky 2014-07-16 11:28:01 UTC

Disregard last comment.

Comment 3 Elad 2014-08-07 14:50:21 UTC

Stateless VM:

Block domain, preallocated, raw disk: 1GB was created when started the stateless VM

Block domain, sparse, cow disk: 1G was created when started the stateless VM

File domain, sparse, raw: 4K was created when started the stateless VM

File, preallocated, raw: 4K was created when started the stateless VM


Verified on ovirt-3.5 rc1:
vdsm-4.16.1-6.gita4a4614.el6.x86_64
ovirt-engine-3.5.0-0.0.master.20140804172041.git23b558e.el6.noarch

Comment 4 Elad 2014-08-10 14:15:11 UTC

Tested that staring a stateless VM while there is not enough free space on the storage domain for the new volume to be created

Comment 5 Sandro Bonazzola 2014-10-17 12:35:54 UTC

oVirt 3.5 has been released and should include the fix for this issue.