Bug 1054175 - Missing storage allocation checks when running a stateless VM
Summary: Missing storage allocation checks when running a stateless VM
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: oVirt
Classification: Retired
Component: ovirt-engine-core
Version: 3.4
Hardware: Unspecified
OS: All
high
high
Target Milestone: ---
: 3.5.0
Assignee: Vered Volansky
QA Contact: Elad
URL:
Whiteboard: storage
Depends On: 1149809 1178022
Blocks: 960934
TreeView+ depends on / blocked
 
Reported: 2014-01-16 11:56 UTC by Allon Mureinik
Modified: 2016-02-10 19:44 UTC (History)
17 users (show)

Fixed In Version: ovirt-3.5.0_rc1
Doc Type: Bug Fix
Doc Text:
Clone Of: 960934
Environment:
Last Closed: 2014-10-17 12:35:54 UTC
oVirt Team: Storage
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
oVirt gerrit 30776 0 master MERGED core: Storage validation when running stateless VM Never
oVirt gerrit 30840 0 master MERGED core: Threshold validation for stateless VM Never
oVirt gerrit 30853 0 ovirt-engine-3.5 MERGED core: Extract Validator creation and apply usages Never
oVirt gerrit 30855 0 ovirt-engine-3.5 MERGED core: Storage validation when running stateless VM Never
oVirt gerrit 30856 0 ovirt-engine-3.5 MERGED core: Threshold validation for stateless VM Never

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.
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