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Bug 888862

Summary:	Live Snaphost: There is no validation of the DC's compatability version for a diskless VM
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	Allon Mureinik <amureini>
Component:	ovirt-engine	Assignee:	Maor <mlipchuk>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Dafna Ron <dron>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	3.1.1	CC:	abaron, dyasny, iheim, lpeer, Rhev-m-bugs, sgrinber, yeylon, ykaul
Target Milestone:	---
Target Release:	3.2.0
Hardware:	All
OS:	All
Whiteboard:	storage
Fixed In Version:	sf5	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		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:
Bug Blocks:	915537

Description Allon Mureinik 2012-12-19 16:45:53 UTC

Description of problem:
Taking a live snapshot of a diskless VM on a 3.0 DC fails since this DC does not support the snapshot verb instead of failing "nicely" with a canDoAction message.

Version-Release number of selected component (if applicable):
si25

How reproducible:
100%

Steps to Reproduce:
1. Create a 3.0 DC ***WITH A 3.0 HOST*** on RHEV-M 3.1
2. Create a VM with no disks and boot it from network
3. Take a live snapshot
  
Actual results:
Live snapshot fail with an error message from VDSM

Expected results:
Should get a canDoAction about an unsupported operation in this DC compatability level.

Additional info:

Comment 1 Allon Mureinik 2012-12-19 16:50:22 UTC

technical insight:

CreateAllSnapshotsFromVmCommand's canDoAction loads the VM's disks, and only if there are any disks, performs the relevant checks, among them the cluster compatibility level check.
This check should be pushed forward, and done before loading the disks.

Comment 2 Allon Mureinik 2013-01-20 10:02:22 UTC

Maor - why did you move this bug to POST?
Can you add a change-id of a patch that solves this and/or a gerrit link?

Comment 3 Maor 2013-01-20 13:07:52 UTC

Pushed upstream at http://gerrit.ovirt.org/#/c/11107/

Comment 4 Maor 2013-01-20 13:08:22 UTC

Merged upstream with change id I77e301643b3ac9789cc5eb7527b6a5a4a0aac6be

Comment 6 Dafna Ron 2013-02-06 15:30:18 UTC

verified on sf5

tested for 3.0 DC and cluster and a 3.0 DC and 3.1 Cluster

Error while executing action: Cannot create Snapshot. Selected data center compatibility version does not support live snaps

Comment 7 Itamar Heim 2013-06-11 08:25:47 UTC

3.2 has been released

Comment 8 Itamar Heim 2013-06-11 08:26:21 UTC

3.2 has been released