[openstack-dev] [cinder] LVM snapshot performance issue -- why isn't thin provisioning the default?

Chris Friesen chris.friesen at windriver.com
Fri Sep 18 15:06:31 UTC 2015


On 09/18/2015 06:57 AM, Eric Harney wrote:
> On 09/17/2015 06:06 PM, John Griffith wrote:

>> Having the "global conf" settings intermixed with the backend sections
>> caused a number of issues when we first started working on this.  That's
>> part of why we require the "self.configuration" usage all over in the
>> drivers.  Each driver instantiation is it's own independent entity.
>>
>
> Yes, each driver instantiation is independent, but that would still be
> the case if these settings inherited values set in [DEFAULT] when they
> aren't set in the backend section.

Agreed.  If I explicitly set something in the [DEFAULT] section, that should 
carry through and apply to all the backends unless overridden in the 
backend-specific section.

Chris



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