[SPDK] Create Event Channel

[SPDK] Create Event Channel

[Kumaraparameshwaran Rathnavel]

[-- Attachment #1: Type: text/plain, Size: 162 bytes --]

Hi All,

I have a Mellanox Card and when I try to create rdma_create_event _channel it fails.

Can you help me, in what I am missing?

Thanking You,
Param.

Re: [SPDK] Create Event Channel

[Harris, James R]

[-- Attachment #1: Type: text/plain, Size: 572 bytes --]

Without any details on how it failed, no one will be able to help.

On 11/10/16, 4:39 AM, "SPDK on behalf of Kumaraparameshwaran Rathnavel" <spdk-bounces(a)lists.01.org on behalf of krath(a)cloudsimple.com> wrote:

    Hi All,
    
    I have a Mellanox Card and when I try to create rdma_create_event _channel it fails.
    
    Can you help me, in what I am missing?
    
    Thanking You,
    Param.
    _______________________________________________
    SPDK mailing list
    SPDK(a)lists.01.org
    https://lists.01.org/mailman/listinfo/spdk
    

Re: [SPDK] Create Event Channel

[Liu, Changpeng]

[-- Attachment #1: Type: text/plain, Size: 1262 bytes --]

The reason why function "rdma_create_event_channel" call failed is that: The Mellanox NIC driver loaded before some kernel infiniband core related modules, such as rdma_ucm driver. This is really not related with SPDK . I can provide 2 methods here to avoid such issue:

1. Try to remove "mlx5_core" module, and manually loaded all the kernel modules located in "/lib/modules/$(shell uname -r)/kernel/drivers/infiniband/core" directory first, and then reload "mlx5_core" again.

2. Another method is that: We can build the infiniband core related modules into kernel but not built as separate modules, and built Mellanox driver for kernel modules.


> -----Original Message-----
> From: SPDK [mailto:spdk-bounces(a)lists.01.org] On Behalf Of
> Kumaraparameshwaran Rathnavel
> Sent: Thursday, November 10, 2016 7:40 PM
> To: Storage Performance Development Kit <spdk(a)lists.01.org>
> Subject: [SPDK] Create Event Channel
> 
> Hi All,
> 
> I have a Mellanox Card and when I try to create rdma_create_event _channel it
> fails.
> 
> Can you help me, in what I am missing?
> 
> Thanking You,
> Param.
> _______________________________________________
> SPDK mailing list
> SPDK(a)lists.01.org
> https://lists.01.org/mailman/listinfo/spdk