May 18 2021 07:27 AM
Hello,
We have next env:
- Windows Server 2016
- mellanox Connectx-3 (fw:2.42.5000; winof: 5.50.53)
Created hyper-v team switch, then vNICs, qos, etc...
When RDMA enabled on one vnic and disabled on other vnics and copying big file ~20TB - windows (smb server side) is crashed with error LM_SERVER_INTERNAL_ERROR:
PS C:\Users\pnd> get-netadapterrdma
Name InterfaceDescription Enabled
vEthernet (v23-cluster) Hyper-V Virtual Ethernet Adapter #3 False
vEthernet (v22-lm) Hyper-V Virtual Ethernet Adapter #2 True
vEthernet (v21) Hyper-V Virtual Ethernet Adapter False
ib2 Mellanox ConnectX-3 Ethernet Adapter True
ib1 Mellanox ConnectX-3 Ethernet Adapter #2 True
When copying small file ~1TB - windows (smb server side) not crashed
When rdma is disabled and no matter for file size - windows (smb server side) not crached.
Also I tested this on two different servers.
P.S. I posted it on “Q&A”: https://docs.microsoft.com/en-us/answers/questions/392384/rdma-smb-bsod-lm-server-internal-error.htm... , but didn't get normal answer.
Thanks.