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Bug 1446919

Summary:	[downstream clone - 4.1.2] Snapshot deletion fails with error reported as "Drive image file could not be found"
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	rhev-integ
Component:	ovirt-engine	Assignee:	Daniel Erez <derez>
Status:	CLOSED ERRATA	QA Contact:	Kevin Alon Goldblatt <kgoldbla>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4.0.5	CC:	ahino, amureini, derez, lsurette, rabraham, ratamir, rbalakri, Rhev-m-bugs, srevivo, tnisan, ykaul, ylavi
Target Milestone:	ovirt-4.1.2	Keywords:	ZStream
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1411572	Environment:
Last Closed:	2017-05-24 11:23:53 UTC	Type:	---
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:	1411572
Bug Blocks:

Description rhev-integ 2017-04-30 14:41:54 UTC

+++ This bug is a downstream clone. The original bug is: +++
+++   bug 1411572 +++
======================================================================

Description of problem:

Unable to delete a snapshot when one of the disk's which is part of it is deactivated. 

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

ovirt-engine-4.0.5.5-0.1.el7ev.noarch

How reproducible:

Steps to Reproduce:
1. Create 2 new disks for a VM .
2. Create a snapshot with the above 2 disks involved. 
3. Deactivate one of the disk's that is part of the snapshot.
4. Delete the snapshot and it will result in the error below 

engine.log
--------------------

 Engine exception thrown while sending merge command: org.ovirt.engine.core.common.errors.EngineException: EngineException: org.ovirt.      engine.core.vdsbroker.vdsbroker.VDSErrorException: VDSGenericException: VDSErrorException: Failed to MergeVDS, error = Drive image file could not be found, code = 13 (Failed with error imageErr and code 13)

5. The disk that is activated gets removed successfully and the disk or image is marked as illegal.
6. once activated again from the disk's tab it can be removed .

Actual results:

-results in the disk/image being marked as illegal in the snapshot .
- stale snapshot entry in table.

Expected results:

- warning to user indicating that one of the disk is in inactive or deactivated state. 

Additional info:

(Originally by Ribu Abraham)

Comment 1 rhev-integ 2017-04-30 14:42:02 UTC

It'd be great if you could attach relevant engine and vdsm logs.

(Originally by Yaniv Kaul)

Comment 5 rhev-integ 2017-04-30 14:42:19 UTC

If I remember correctly this is the expected behavior, Daniel can you confirm?

(Originally by Tal Nisan)

Comment 6 rhev-integ 2017-04-30 14:42:23 UTC

@Ala - is it the excepted behavior with live merge? or perhaps related to bug 1327140 ?

(Originally by Daniel Erez)

Comment 7 rhev-integ 2017-04-30 14:42:29 UTC

It is the expected behavior though a warning indicating that the snapshot will not be removed the non-active disk will be marked as illegal (in the disks sub-tab in the snapshots tab)

(Originally by Ala Hino)

Comment 8 rhev-integ 2017-04-30 14:42:34 UTC

@Ala,

Currently there is no warning or indication as such and hence wouldn't it be a good idea to have a warning indication or notification for this case. 

Ribu

(Originally by Ribu Abraham)

Comment 11 rhev-integ 2017-04-30 14:42:50 UTC

WARN: Bug status wasn't changed from MODIFIED to ON_QA due to the following reason:

[FOUND NON-ACKED FLAGS: {'rhevm-4.1.z': '?'}]

For more info please contact: rhv-devops

(Originally by rhev-integ)

Comment 12 Kevin Alon Goldblatt 2017-05-08 12:44:04 UTC

Verified with the following code:
------------------------------------
ovirt-engine-4.1.2.1-0.1.el7.noarch
rhevm-4.1.2.1-0.1.el7.noarch
vdsm-4.19.12-1.el7ev.x86_64


Verified with the following scenario:
--------------------------------------
Steps to Reproduce:
1. Create 2 new disks for a VM .
2. Create a snapshot with the above 2 disks involved. 
3. Deactivate one of the disk's that is part of the snapshot.
4. Delete the snapshot >>>>> warning to user indicating that one of the disk is in inactive or deactivated state is displayed in the Delete Snapshot window and the the snapshot is deleted.


Moving to VERIFIED!

Comment 14 errata-xmlrpc 2017-05-24 11:23:53 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2017:1280