On Tue, Apr 8, 2014 at 4:47 PM, Wido den Hollander <wido@xxxxxxxx> wrote:
> Hi,
>
> With Ubuntu 14.04 now shipping with the 3.13 kernel it fully supports Format
> 2 in both librbd and krbd.
>
> For RHEL 7 there will be a extra yum repo with a module which supports
> format 2, so isn't it that that after Firefly we change 'rbd_default_format'
> to 2?
>
> I still see a lot of images being created with format 1 and that will
> otherwise be hunting us for a long time.
>
> I'd vote for making format 2 the default or at least patch the 'rbd' tool to
> create format 2 images.
Fancy format 2 striping is not supported by krbd. We've had a couple
people who confused format 2 support with the ability to set their own
stripe settings, so we'll need to be more vocal about it.
Thanks,
Ilya
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