Re: [SPDK] A problem with SPDK 19.01 NVMeoF/RDMA target

[Valeriy Glushkov <valeriy.glushkov at starwind.com>]

[-- Attachment #1: Type: text/plain, Size: 2526 bytes --]

Hi Jim,

Our module is an implementation of the NVMeoF/RDMA host.

It works with SPDK 18.10.1 well, so the problem seems to be related to the  
SPDK 19.01 code.

I can see that the RDMA request's state engine have been changed in the  
recent SPDK release.
So it would be great if the author of the modifications could take a look  
at the issue...

Thank you for your help!

-- 
Best regards,
Valeriy Glushkov
www.starwind.com
valeriy.glushkov(a)starwind.com

Harris, James R <james.r.harris(a)intel.com> писал(а) в своём письме Wed, 06  
Feb 2019 02:35:38 +0200:

> Hi Valeriy,
>
> Can you provide more details on this test host module?
>
> Thanks,
>
> Jim
>
>> On Feb 5, 2019, at 4:41 AM, Valeriy Glushkov  
>> <valeriy.glushkov(a)starwind.com> wrote:
>>
>> Hi All!
>>
>> It seems there is an issue in the 19.01 code that leads to a request  
>> stays unanswered and our test NVMeoF/RDMA host module does not receive  
>> the completion.
>>
>> From the debug log of the target:
>> =======
>> rdma.c:1508:spdk_nvmf_rdma_request_process: *DEBUG*: Request 0x1402a20  
>> entering state 1
>> rdma.c:1508:spdk_nvmf_rdma_request_process: *DEBUG*: Request 0x1402a20  
>> entering state 2
>> rdma.c:1414:spdk_nvmf_rdma_request_parse_sgl: *DEBUG*: Request  
>> 0x1402a20 took 1 buffer/s from central pool
>> rdma.c:1508:spdk_nvmf_rdma_request_process: *DEBUG*: Request 0x1402a20  
>> entering state 5
>> request.c: 121:nvmf_trace_command: *DEBUG*: Admin cmd: opc 0x02 fuse 0  
>> cid 2751 nsid 4294967295 cdw10 0x001e0002
>> request.c: 127:nvmf_trace_command: *DEBUG*: psdt 0
>> request.c: 136:nvmf_trace_command: *DEBUG*: SGL: Keyed (Inv): addr  
>> 0xffffb28f67223dd0 key 0x8294c len 0x200
>> ctrlr.c:1285:spdk_nvmf_ctrlr_get_log_page: *DEBUG*: Get log page:  
>> LID=0x02 offset=0x0 len=0x7c
>> request.c: 92:spdk_nvmf_request_complete: *DEBUG*: cpl: cid=2751  
>> cdw0=0x00000000 rsvd1=0 status=0x0000
>> rdma.c:1508:spdk_nvmf_rdma_request_process: *DEBUG*: Request 0x1402a20  
>> entering state 7
>> rdma.c:1508:spdk_nvmf_rdma_request_process: *DEBUG*: Request 0x1402a20  
>> entering state 8
>> rdma.c:1508:spdk_nvmf_rdma_request_process: *DEBUG*: Request 0x1402a20  
>> entering state 8
>> ========
>>
>> The same host module works well with the SPDK 18.10.1 NVMf target.
>>
>> Is this a bug in the recent SPDK code?
>>
>> --
>> Best regards,
>> Valeriy Glushkov
>> www.starwind.com
>> valeriy.glushkov(a)starwind.com
>>