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Hello,

Ok. So it's different case. I was thinking only about issues with
quotas.
For me this which You described is more related to scheduler/placement
API(?).
Do You think that it should be taken in same specs?

-- 
Best regards / Pozdrawiam
Sławek Kapłoński
slawek at kaplonski.pl

On Thu, 17 Nov 2016, Chris Friesen wrote:

> On 11/17/2016 12:27 AM, Chris Friesen wrote:
> > On 11/16/2016 03:55 PM, Sławek Kapłoński wrote:
> > > As I said before, I was testing it and I didn't have instances in Error
> > > state. Can You maybe check it once again on current master branch?
> > 
> > I don't have a master devstack handy...will try and set one up.  I just tried on
> > a stable/mitaka devstack--I bumped up the quotas and ran:
> > 
> > nova boot --flavor m1.tiny --image cirros-0.3.4-x86_64-uec --min-count 1
> > --max-count 100 blah
> > 
> > All the instances went to the "scheduling" state, the first 21 instances
> > scheduled successfully then one failed the RamFilter.  I ended up with 100
> > instances all in the "error" state.
> 
> I located a running devstack based on master, the nova repo was using commit
> 633c817d from Nov 12.
> 
> It behaved the same...I jacked up the quotas to give it space, then ran:
> 
> nova boot --flavor m1.xlarge --image cirros-0.3.4-x86_64-uec --min-count 1
> --max-count 20 blah
> 
> 
> The first nine instances scheduled successfully, the next one failed the
> RamFilter filter, and all the instances went to the "error" state.
> 
> This is what we'd expect given that in ComputeTaskManager.build_instances()
> if the call to self._schedule_instances() raises an exception we'll hit the
> "except" clause and loop over all the instances, setting them to the error
> state.  And down in FilterScheduler.select_destinations() we will raise an
> exception if we couldn't schedule all the hosts:
> 
> if len(selected_hosts) < num_instances:
> 	<snip>
> 	reason = _('There are not enough hosts available.')
> 	raise exception.NoValidHost(reason=reason)
> 
> Chris
> 
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