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Hi, Jay

Here is a rough summary about claimed state:

when we resizing VM to same host, suppose we now have PCI A,  will renew 
to B1, B2, before the whole resizing process finished, we given user the 
change to revert the re-size, it's better reverting to original PCI A, 
not a new PCI devices. claimed status help to recording which one is 
allocated, but not suppose be assign to the current VM.

these whole logic is missing in the Nova now,  i had post some patches 
for this, but need to refresh(now Abandoned):
https://review.openstack.org/#/q/topic:pci_resize
(ignore the first patch)

Regards
Yongli He



在 2016年03月08日 02:23, Jay Pipes 写道:
> Subject says it all.
>
> I've been trying to fix this bug:
>
> https://bugs.launchpad.net/nova/+bug/1549984
>
> and just shake my head every time I look at the PCI handling code in 
> nova/pci/manager.py and nova/pci/stats.py.
>
> Why do we have a CLAIMED state as well as an ALLOCATED state?
>
> Best,
> -jay
>
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