[Openstack] Openstack Digest, Vol 26, Issue 29

kotipalli venkatesh kotipallivenkatesh28 at gmail.com
Sun Aug 30 12:45:35 UTC 2015


On Aug 30, 2015 5:38 PM, <openstack-request at lists.openstack.org> wrote:

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> Today's Topics:
>
>    1. Re: Cinder, custom filters and weighers. (Thomas Zilio)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 29 Aug 2015 19:41:43 +0200
> From: Thomas Zilio <zilio at efficit.com>
> To: Erlon Cruz <sombrafam at gmail.com>
> Cc: OpenStack Mailing List <openstack at lists.openstack.org>
> Subject: Re: [Openstack] Cinder, custom filters and weighers.
> Message-ID: <C703C005-D0A8-4336-9EDF-F8067BDC3E24 at efficit.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hello,
>
> I did some more testing (on Icehouse and Juno) and the only way I was able
> to test my filter (or weigher) was by editing an existing filter
> (capacity_filter.py) and putting the content of my filter into it.
> I had to keep the class name (CapacityFilter) otherwise I had an error
> because the class CapacityFilter was not found (even if the CapacityFilter
> wasn't used in cinder.cfg).
>
> So it looks like it only loads its default filters and somehow wants its
> default filters classes if the file.py is present (removing
> capacity_filter.py was not a problem).
>
> Anyone ever managed to use custom Cinder filters ?
> And yes, everything is working as intended with Nova filters/weighers.
>
> Thanks and regards,
> Thomas
>
> > Le 25 ao?t 2015 ? 14:59, Shinobu <shinobu.kj at gmail.com> a ?crit :
> >
> > Sorry, my reply was to intended to different question.
> > Please ignore me -;
> >
> > Shinobu
> >
> > On Tue, Aug 25, 2015 at 9:42 PM, Thomas Zilio <zilio at efficit.com
> <mailto:zilio at efficit.com>> wrote:
> > Hello Erlon,
> >
> > Yes, my class inherits from filters.BaseHostFilter.
> > That's what I though for  'scheduler_available_filters' , is this option
> required for newer release ?
> > This option is mentioned here :
> http://docs.openstack.org/developer/cinder/devref/filter_scheduler.html <
> http://docs.openstack.org/developer/cinder/devref/filter_scheduler.html>
> >
> > The test filter is:
> >> from cinder.openstack.common..scheduler import filters
> >> from cinder.openstack.common import log as logging
> >>
> >> LOG = logging.getLogger(__name__)
> >>
> >> class CustomFilter(filters.BaseHostFilter):
> >>     def host_passes(self, host_state, filter_properties):
> >>         LOG.warn("Attributes of host_state: " + str(dir(host_state)))
> >>
> >>         if host_state.host == "host1.xxx.xxx":
> >>             LOG.warn("Don't want you: " + host_state.host)
> >>             return False
> >>         return True
> >
> >
> > I'll look into host_manager.py but I'm not sure what more it can give me.
> >
> > Thanks,
> > Thomas
> >
> >
> >> Le 25 ao?t 2015 ? 14:16, Erlon Cruz <sombrafam at gmail.com <mailto:
> sombrafam at gmail.com>> a ?crit :
> >>
> >> Hi Thomas,
> >>
> >> Is you class inheriting from 'filters.BaseHostFilter'? Also, there's no
> such option 'scheduler_available_filters' in openstack/icehouse.
> >> A good way to have an insight of your problem is to put logs into
> 'cinder/scheduler/host_manager.py -> _choose_host_filters'.
> >>
> >> Erlon
> >>
> >> On Tue, Aug 25, 2015 at 9:02 AM, Shinobu <shinobu.kj at gmail.com <mailto:
> shinobu.kj at gmail.com>> wrote:
> >> Yes, it's possible using inspectors.
> >>
> >> Shinobu
> >>
> >> On Tue, Aug 25, 2015 at 8:32 PM, Thomas Zilio <zilio at efficit.com
> <mailto:zilio at efficit.com>> wrote:
> >> Hello,
> >>
> >> I'm trying to test some custom cinder filters and weighers but I can't
> manage to make it work.
> >> I did the same for Nova and everything is working but the Cinder
> scheduler can't seem to find my custom classes.
> >>
> >> My tests are made on a Icehouse installation.
> >>
> >> The error message appearing in the log is the following one:
> >> > SchedulerHostFilterNotFound: Scheduler Host Filter CustomFilter could
> not be found.
> >>
> >> The filter file is in the directory :
> /usr/lib/python2.6/site-packages/cinder/scheduler/filters
> >> And I added these lines to the cinder.conf file (not sure if the first
> one is required).
> >> > scheduler_available_filters=custom_filter.CustomFilter
> >> >
> scheduler_default_filters=AvailabilityZoneFilter,CapacityFilter,CapabilitiesFilter,CustomFilter
> >>
> >> My filter file name is custom_filter.py and the class is CustomFilter.
> >>
> >> I don't think it's related to what my filter does since it's not even
> found by the scheduler.
> >> I'm encountering the same issues with the weighers (and everything is
> working just fine on the Nova scheduler side).
> >>
> >> If anyone has any idea how I could make this work I would be really
> grateful !
> >>
> >> Thanks and regards,
> >> Thomas
> >> _______________________________________________
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> >>
> >>
> >> --
> >> Email:
> >>  shinobu at linux.com <mailto:shinobu at linux.com>
> >>  skinjo at redhat.com <mailto:skinjo at redhat.com>
> >>
> >> ?Life w/ Linux <http://i-shinobu.hatenablog.com/>
> >>
> >> _______________________________________________
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> >>
> >>
> >
> >
> > _______________________________________________
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> >
> >
> >
> >
> > --
> > Email:
> >  shinobu at linux.com <mailto:shinobu at linux.com>
> >  skinjo at redhat.com <mailto:skinjo at redhat.com>
> >
> > ?Life w/ Linux <http://i-shinobu.hatenablog.com/>
>
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