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

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