On Wed, Apr 10, 2024 at 02:28:59AM +0000, Zhijian Li (Fujitsu) via wrote:
on 4/10/2024 3:46 AM, Peter Xu wrote:
Is there document/link about the unittest/CI for migration tests, Why are those tests missing? Is it hard or very special to set up an environment for that? maybe we can help in this regards. See tests/qtest/migration-test.c. We put most of our migration tests there and that's covered in CI.
I think one major issue is CI systems don't normally have rdma devices. Can rdma migration test be carried out without a real hardware?
Yeah, RXE aka. SOFT-RoCE is able to emulate the RDMA, for example $ sudo rdma link add rxe_eth0 type rxe netdev eth0 # on host then we can get a new RDMA interface "rxe_eth0". This new RDMA interface is able to do the QEMU RDMA migration.
Also, the loopback(lo) device is able to emulate the RDMA interface "rxe_lo", however when I tried(years ago) to do RDMA migration over this interface(rdma:127.0.0.1:3333) , it got something wrong. So i gave up enabling the RDMA migration qtest at that time.
Thanks, Zhijian. I'm not sure adding an emu-link for rdma is doable for CI systems, though. Maybe someone more familiar with how CI works can chim in. -- Peter Xu