Bug 511071

Summary:	RFE: default to qcow2 rather than "raw" for virtual disk file
Product:	[Community] Virtualization Tools	Reporter:	Gene Czarcinski <gczarcinski>
Component:	virtinst	Assignee:	Cole Robinson <crobinso>
Status:	CLOSED DEFERRED	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	berrange, crobinso, hbrock, virt-maint
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-02-07 22:28:18 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	514891

Description Gene Czarcinski 2009-07-13 14:57:55 UTC

Description of problem:
Currently, virtual disks (volumes) are created in "raw" format.  Since "qcow2" is the native format and since it makes more efficient use of space (IMHO), this should be the default.

Version-Release number of selected component (if applicable):
F11 + preview

Comment 1 Mark McLoughlin 2009-08-11 15:39:55 UTC

Given http://fedoraproject.org/wiki/Features/KVM_qcow2_Performance this might not be unreasonable

One problem mentioned by danpb is that we can't pre-allocate a qcow2 image - AFAIR, we do that so that guests don't run out of space at some point in the future when the guest runs out of space. There may also have been a performance reason for doing it, too.

Anyway, if we do change the default to qcow2, I don't think we'll do it until Fedora 13, so putting it on F13VirtTarget.

Comment 2 Cole Robinson 2012-02-07 22:28:18 UTC

There's a whole lot to this equation, and outright changing the default is a ways off: for starters we want to at least allow users to change the default manually. Basically tracking this in a simple BZ isn't that useful so just closing.