Hi,

I have updated the fast cloning changes with an new patch set. Caching is off 
by default for xenapi and the default behavior doesn't change (for libvirt or 
xenapi).  It also addresses the other review comments that were given for the 
feature.

Regards,
Devdeep

-----Original Message-----
From: Chris Behrens [mailto:chris.behr...@rackspace.com] 
Sent: Wednesday, February 01, 2012 1:25 AM
To: Vishvananda Ishaya
Cc: Chris Behrens; Devdeep Singh; openstack@lists.launchpad.net
Subject: Re: [Openstack] Fast cloning - FF-Exception request

I just chatted with Paul.

We're okay with this if we can have a flag to allow turning off the caching 
part of things, since both cow and caching are behavior changes for the Xen 
side.  There's already a flag for 'cow', so that's covered, but there is not 
one for caching in the current branch up for review.  I understand that they 
should default to 'on' to match libvirt functionality, but I think we need to 
have a way to have Xen operate how it did before since it has been stable.  I'm 
definitely looking forward to these features, but would like to minimize the 
impact in case it is unstable or people simply want the current behavior.

(I posted the same comments on the review)

- Chris


On Jan 31, 2012, at 11:02 AM, Vishvananda Ishaya wrote:

> I'm ok with this going in, but I would like to leave it up to the guys who 
> are using Xen on a daily basis.  So if Chris Behrens and Paul Voccio are ok 
> with it, I think an FFE is fine.
> 
> Vish
> 
> On Jan 31, 2012, at 10:31 AM, Devdeep Singh wrote:
> 
>> Hi,
>>  
>> I am asking for a Feature-Freeze exception for the 
>> blueprinthttps://blueprints.launchpad.net/nova/+spec/fast-cloning-for-xenserver.
>>  
>> I appreciate that it is now late for getting this feature in, however we are 
>> ready to get this feature early in E4.
>>  
>> We have got a few reviews in the queue, and we are close to completing them. 
>> It is my understanding that E4 was not for big changes. However, this change 
>> only touches the xenapi code for instance creation. I have tested these 
>> change extensively to make sure it doesn't break anything. Moreover, it will 
>> help close the gap between KVM and XenAPI.
>>  
>> Thanks,
>> Devdeep
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