Paul, you are right that the 'extra_info' should not be in the 
os-pci:pci_stats, since it's not part of 'pool-keys' anymore, but I'm not sure 
if both 'key1' and 'phys_function' will be part of the pci_stats.


From: Murray, Paul (HP Cloud) []
Sent: Thursday, March 5, 2015 11:39 AM
Subject: [openstack-dev] [Nova] pci stats format and functional tests

Hi All,

I know Yunhong Jiang and Daniel Berrange have been involved in the following, 
but I thought it worth sending to the list for visibility.

While writing code to convert the resource tracker to use the ComputeNode 
object realized that the api samples used in the functional tests are not the 
same as the format as the PciDevicePool object. For example: 
hypervisor-pci-detail-resp.json has something like this:

"os-pci:pci_stats": [
"count": 5,
"extra_info": {
"key1": "value1",
"phys_function": "[[\"0x0000\", \"0x04\", \"0x00\", \"0x1\"]]"
"keya": "valuea",
"product_id": "1520",
"vendor_id": "8086"

My understanding from interactions with yjiang5 in the past leads me to think 
that something like this is what is actually expected:

"os-pci:pci_stats": [
"count": 5,
"key1": "value1",
"phys_function": "[[\"0x0000\", \"0x04\", \"0x00\", \"0x1\"]]",
"keya": "valuea",
"product_id": "1520",
"vendor_id": "8086"

This is the way the PciDevicePool object expects the data structure to be and 
is also the way the libvirt virt driver creates pci device information (i.e. 
without the "extra_info" key). Other than that (which is actually pretty clear) 
I couldn't find anything to tell me definitively if my interpretation is 
correct and I don't want to change the functional tests without being sure they 
are wrong. So if anyone can give some guidance here I would appreciate it.

I separated this stuff out into a patch with a couple of other minor cleanups 
in preparation for the ComputeNode change, see:

Let me know if I am on the right track,


Paul Murray
Nova Technical Lead, HP Cloud
+44 117 316 2527

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