Bug 1336214

Summary:	Implement live merge of auto-generated snapshot and backing file after LSM fails
Product:	[oVirt] ovirt-engine	Reporter:	Ala Hino <ahino>
Component:	BLL.Storage	Assignee:	Ala Hino <ahino>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Kevin Alon Goldblatt <kgoldbla>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	3.5.1	CC:	ahino, amureini, bgraveno, bugs, stirabos, tnisan, ylavi
Target Milestone:	ovirt-4.0.0-rc	Flags:	rule-engine: ovirt-4.0.0+ ylavi: planning_ack+ amureini: devel_ack+ acanan: testing_ack+
Target Release:	4.0.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Enhancement
Doc Text:	This update ensures that the auto-generated snapshot that is created during live storage migration (LSM) is automatically deleted if LSM fails.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-08-01 12:28:25 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:	1317434
Bug Blocks:

Description Ala Hino 2016-05-15 18:25:41 UTC

Description of problem:
During live storage migration (LSM), a an auto-generated snapshot is created. BZ 1317434 handled removing the auto-generated snapshot after a successful LSM. This RFE handles removing the auto-generated snapshot after a failure during LSM.

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


How reproducible:
100%

Steps to Reproduce:
1. Start LSM
2. Fail the operation for example by stopping vdsm
3.

Actual results:
Auto-generated snapshot is created and not removed

Expected results:
Auto-generated snapshot to be removed

Additional info:

Comment 1 Red Hat Bugzilla Rules Engine 2016-05-15 18:27:05 UTC

Bug tickets must have version flags set prior to targeting them to a release. Please ask maintainer to set the correct version flags and only then set the target milestone.

Comment 2 Red Hat Bugzilla Rules Engine 2016-05-15 18:27:05 UTC

Target release should be placed once a package build is known to fix a issue. Since this bug is not modified, the target version has been reset. Please use target milestone to plan a fix for a oVirt release.

Comment 3 Yaniv Lavi 2016-05-23 13:24:41 UTC

oVirt 4.0 beta has been released, moving to RC milestone.

Comment 4 Yaniv Lavi 2016-05-23 13:25:54 UTC

oVirt 4.0 beta has been released, moving to RC milestone.

Comment 5 Allon Mureinik 2016-06-05 13:22:58 UTC

Ala, this is a highly visible customer facing issue - please provide some doctext for it.

Comment 6 Kevin Alon Goldblatt 2016-07-13 16:48:54 UTC

Verified with the following code:
---------------------------------------
vdsm-4.18.4-2.el7ev.x86_64
rhevm-4.0.2-0.2.rc1.el7ev.noarch

Verified using the following scenario:
---------------------------------------
Create VM with 2 disks
Start the VM
Start the LSM >>> after the auto generated snapshots are created stop the VDSM
After the VDSM starts up again the the LSM completes and the auto generated snapshot is deleted.



Moving to VERIFIED!