[rdo-list] How to assign two same type PCI pass-through devices (Ethernet cards) to 2 different VM instances?

[Chinmaya Dwibedy]

Hi All,

Can we assign two same type PCI pass-through devices (Ethernet cards) to 2
different VM instances separately? Please note that, both the cards have
same vendor_id and product_id.

I configured it in pci_passthrough_whitelist and create two different
pci_alias (Say a1 and a2). Modified the Nova flavor to use a1 by VM1 and
VM2. Followed the procedures mentioned at
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Administration_Guide/chap-Guest_virtual_machine_device_configuration.html

With this edited xml files of both the instances (after shutting down).
Added a device entry in the <source> section to assign the PCI device to
the guest virtual machine. and accordingly configured domain, bus, slot and
function. Restarted the VMs using #virsh start command. Made an Query pci
device in nova DB and found that two Ethernet PCI devices have been
assigned to single VM.

I cannot assign 2 same type PCI pass-through Ethernet devices to 2 VM
instances separately. Can you please let me know how to accomplish the
same? Thanks in advance for your time and help.

Regards,
Chinmaya
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.rdoproject.org/pipermail/dev/attachments/20160520/4f562f9b/attachment.html>