[SPDK] Re: Query about "Starting I/O failed" exception while using arbitration NVMe example

Hi Harshit,

When you run arbitrary app, If you restrict the huge memeory size, e.g, "-s 512"  (to  set the app with 512M memory), will this issue be resolved?

Thanks. 




Best Regards
Ziye Yang 

-----Original Message-----
From: Walker, Benjamin <benjamin.walker(a)intel.com> 
Sent: Friday, June 19, 2020 2:48 AM
To: Storage Performance Development Kit <spdk(a)lists.01.org>
Subject: [SPDK] Re: Query about "Starting I/O failed" exception while using arbitration NVMe example



> -----Original Message-----
> From: Harshit Jain <kumarjain10(a)gmail.com>
> Sent: Tuesday, June 16, 2020 10:26 PM
> To: spdk(a)lists.01.org
> Subject: [SPDK] Query about "Starting I/O failed" exception while 
> using arbitration NVMe example
> 
> Hello Team,
> 
> I was trying to setup SPDK on Linux Kernel 5.6.4 and get started on 
> using SPDK examples. I hope I have posted the query in the right forum thread.
> 
> I was trying to setup SPDK on Linux Kernel 5.6.4. While trying to 
> execute the NVMe arbitration example, I am facing Starting I/O failed 
> exception. I have added debug prints to get the value of error and it was -22.
> 
> The attached NVMe SSD has a single namespace of 64MB and 4k sector 
> size format and single controller. Since basic script was giving 
> exception, I tried reducing the IO count to 1 and io size in bytes to 
> 4096 to keep the IO profile simple. But I still faced the same exception.
> 
> Is there any configuration missing while setting up SPDK?
> 
> I have tried most of the other examples too, it is observed that NVMe 
> Admin commands and queue creation is working fine but the example 
> script is unable to submit NVM I/O commands to the controller due to 
> the mentioned exception.
> 
> SPDK version
> Starting SPDK v20.07-pre git sha1 e69375b / DPDK 19.11.0 initialization...

Can you confirm if the other tools like identify and perf are working for you? Does the identify tool report that you device supports arbitration?


> 
> 
> Thanks in advance.
> 
> Regards,
> Harshit
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