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
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