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

[Harshit Jain <kumarjain10 at gmail.com>]

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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...


Thanks in advance.

Regards,
Harshit