Bug 1336214 – Implement live merge of auto-generated snapshot and backing file after LSM fails

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Bug 1336214 - Implement live merge of auto-generated snapshot and backing file after LSM fails

Summary:	Implement live merge of auto-generated snapshot and backing file after LSM fails

Status:	CLOSED CURRENTRELEASE

Aliases:	None

Product:	ovirt-engine
Classification:	oVirt
Component:	BLL.Storage (Show other bugs)
Sub Component:
Version:	3.5.1
Hardware:	Unspecified Unspecified

Priority	medium Severity medium (vote)
Target Milestone:	ovirt-4.0.0-rc
Target Release:	4.0.0
Assigned To:	Ala Hino
QA Contact:	Kevin Alon Goldblatt
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:	1317434
Blocks:
	Show dependency tree / graph

Reported:	2016-05-15 14:25 EDT by Ala Hino
Modified:	2016-08-01 08:28 EDT (History)
CC List:	7 users (show)

See Also:
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 08:28:25 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	Storage
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Flags:	rule-engine: ovirt‑4.0.0+ ylavi: planning_ack+ amureini: devel_ack+ acanan: testing_ack+

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
oVirt gerrit	57843	master	MERGED	lsm: Remove auto-generated snapshot when LSM fails	2016-06-05 04:06 EDT
oVirt gerrit	58632	ovirt-engine-4.0	MERGED	lsm: Remove auto-generated snapshot when LSM fails	2016-06-05 08:39 EDT

Groups: None (edit)

Description Ala Hino 2016-05-15 14:25:41 EDT

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 14:27:05 EDT

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 14:27:05 EDT

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 09:24:41 EDT

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

Comment 4 Yaniv Lavi 2016-05-23 09:25:54 EDT

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

Comment 5 Allon Mureinik 2016-06-05 09:22:58 EDT

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

Comment 6 Kevin Alon Goldblatt 2016-07-13 12:48:54 EDT

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!

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