Moshe Levi c2c3b97259 pci: Move PCI devices and PCI requests into migration context ...

When resizing guest to flavor with pci passthrogth, we need to drop
the old pci devices and allocate new ones. To be able to do that we
are leveraging the migration context (that used only for NUMA).

Adds old and new PCI devices/ PCI requests into the MigrationContext
object and uses the nova.pci.request.get_pci_requests_from_flavor()
function to grab the set of requested PCI devices during a migration.

Then, in the resource tracker's _update_usage_from_migration() call, we
use the old and new PCI devices and PCI requests stored in the
MigrationContext to properly account for changes.

Closes-Bug: #1368201
Co-Authored-by: Jay Pipes <jaypipes@gmail.com>

Change-Id: Ie8690f2b7235d677ebe15fabaae81b0a6bda29de

2016-06-03 02:09:33 +03:00

3.4 KiB

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