Thanks for your reply. I indeed missed the filter configuration of the scheduler. It's ok now.
Thank you very much, Jeremy Liu > -----Original Message----- > From: yongli he [mailto:yongli...@intel.com] > Sent: Tuesday, March 04, 2014 9:28 AM > To: openstack-dev@lists.openstack.org > Subject: Re: [openstack-dev] [nova] A problem about pci-passthrough > > On 2014年03月03日 22:21, Alexis Lee wrote: > > Liuji (Jeremy) said on Mon, Mar 03, 2014 at 08:06:57AM +0000: > >> Test scenario: > >> 1)There are two compute nodes in the environment named A and B. A has > two NICs of vendor_id='8086' and product_id='105e', B has two NICs of > vendor_id='8086' and product_id='10c9'. > >> 2)I configured "pci_alias={"vendor_id":"8086", "product_id":"10c9", > "name":"a1"}" in nova.conf on the controller node, and of course the > pci_passthrough_whitelist on this two compute nodes seperately. > >> 3)Finally, a flavor named "MyTest" with extra_specs= > >> {u'pci_passthrough:alias': u'a1:1'} 4)When I create a new instance with the > "MyTest" flavor, it starts or is error randomly. > >> > >> The problem is in the _schedule function of > nova/scheduler/filter_scheduler.py: > >> chosen_host = random.choice( > >> weighed_hosts[0:scheduler_host_subset_size]) > >> selected_hosts.append(chosen_host) > >> > >> # Now consume the resources so the filter/weights > >> # will change for the next instance. > >> > >> chosen_host.obj.consume_from_instance(instance_properties) > >> > >> while "scheduler_host_subset_size" is configured to 2, the > >> weighed_hosts are A and B, but the chosen_host is selected randomly. > >> When chosen_host is B, the instance starts, but when chosen_host is > >> A, the instance becomes error. The "consume_from_instance" will raise > >> a exception. > > Hi Jeremy, > > > > You didn't mention the PciPassthroughFilter, have you enabled this in > definitely need this filter. > > Yongli He > > your scheduler? > > https://wiki.openstack.org/wiki/Pci_passthrough > > > > > > Alexis > > > _______________________________________________ > OpenStack-dev mailing list > OpenStack-dev@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev