Very good points w.r.t. easing migration.  There is no plan to remove support 
for image format 1 -- it's more about being able to concentrate our attention 
to format 2 and to nudge users towards creating new images in format 2.

-- 

Jason Dillaman 

----- Original Message -----
> From: "Christian Balzer" <ch...@gol.com>
> To: "ceph-users" <ceph-users@lists.ceph.com>
> Cc: "Jason Dillaman" <dilla...@redhat.com>
> Sent: Tuesday, March 29, 2016 8:05:40 PM
> Subject: Image format support (Was: Re: [ceph-users] Scrubbing a lot)
> 
> 
> Hello,
> 
> On Tue, 29 Mar 2016 18:15:00 -0400 (EDT) Jason Dillaman wrote:
> 
> > Image format 1 is still supported -- just trying to slowly move users
> > off of it and onto image format 2 through lots of log message nagging.
> > 
> 
> Until there is a "live" migration or something as close to it as possible,
> don't expect anybody who doesn't need format 2 features (like me in our
> largest use case) to make that change.
> 
> Excessive down time, massive data movement, loss of sparse allocation if
> you're not careful are all factors against migration to format 2.
> 
> Regards,
> 
> Christian
> --
> Christian Balzer        Network/Systems Engineer
> ch...@gol.com         Global OnLine Japan/Rakuten Communications
> http://www.gol.com/
> 
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