RDMA Connectx-3 SMB - BSOD (LM_SERVER_INTERNAL_ERROR)

Infrastructure & Networking Software And Drivers
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1

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 vnics and disabled on other vnics and copying big file ~20TB - smb server 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 - smb server not crashed

When rdma is disabled and no matter for file size - smb server not crached.

Please help :)

Thanks.

2

Hello Leonid,

Thank you for posting your inquiry on the NVIDIA Networking Community.

Based on the information provided, unfortunately the error you are receiving is a Microsoft error. And should be further investigated by Microsoft support. We recommend to open a support ticket with Microsoft directly for this. If Microsoft sees an issue with our driver, they will open a case with us directly.

Thank you and regards,

~NVIDIA Networking Technical Support