Bug 984291

Summary:	volume clone operation change allocation type to pre-allocated [LVM]
Product:	Red Hat OpenStack	Reporter:	Haim <hateya>
Component:	openstack-cinder	Assignee:	Eric Harney <eharney>
Status:	CLOSED UPSTREAM	QA Contact:	Dafna Ron <dron>
Severity:	high	Docs Contact:
Priority:	high
Version:	3.0	CC:	eharney, iheim, jobernar, scohen, yeylon
Target Milestone:	rc	Keywords:	FutureFeature, Improvement, Triaged
Target Release:	5.0 (RHEL 7)
Hardware:	x86_64
OS:	Linux
Whiteboard:	stalled_upstream
Fixed In Version:		Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-03-20 16:23:04 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Haim 2013-07-14 14:04:23 UTC

Description of problem:


while cloning a 2G volume, I noticed it take quite some time for operation to complete, then I noticed that cinder basically dd source volume. 
note that source volume is empty from data POV. 

expected results:

thin-provisioning allocation (write only used data)

current results:

every volume is pre-allocated.

Comment 1 Eric Harney 2013-07-17 12:51:08 UTC

To clarify, this is about the LVM driver, right?

Comment 2 Haim 2013-08-20 09:54:02 UTC

(In reply to Eric Harney from comment #1)
> To clarify, this is about the LVM driver, right?

indeed.