I was testing the helloworld program on ubuntu with NVMe SSD and the probe() is failing. Please let me know if this is a known problem.

Let me know if there is workaround.

The perf program did not have any problem.

I have attached the output for both tests.

lspci| grep Non

ad:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller (rev 01)

ae:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller (rev 01)

uname -a

Linux sjca5radevct13 4.10.0-38-generic #42~16.04.1-Ubuntu SMP Tue Oct 10 16:32:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

1. helloworld output:

---------------------------

Attached to 0000:ad:00.0

Using controller SAMSUNG MZQWV480HCGM (S1TRNYAFA00148      ) with 1 namespaces.

  Namespace ID: 1 size: 480GB

nvme_ctrlr.c:1475:nvme_ctrlr_process_init: *ERROR*: Initialization timed out in state 1

nvme_ctrlr.c: 523:nvme_ctrlr_shutdown: *ERROR*: did not shutdown within 5 seconds

spdk_nvme_probe() failed

2. perf output:

sudo ./perf -q 1 -s 4096 -t 10 -w read -r "trtype:PCIe traddr:0000:ad:00.0"

---------------

Starting DPDK 17.08.0 initialization...

[ DPDK EAL parameters: perf -c 0x1 --file-prefix=spdk_pid7647 ]

EAL: Detected 32 lcore(s)

EAL: No free hugepages reported in hugepages-1048576kB

Attached to NVMe Controller at 0000:ad:00.0 [144d:a802]

Associating SAMSUNG MZQWV480HCGM (S1TRNYAFA00148      ) with lcore 0

Initialization complete. Launching workers.

Starting thread on core 0

========================================================

                                                                                            Latency(us)

Device Information                                     :       IOPS       MB/s    Average        min        max

SAMSUNG MZQWV480HCGM (S1TRNYAFA00148      ) from core 0:   13773.50      53.80      72.59      60.20     243.82

========================================================

Total                                                  :   13773.50      53.80      72.59      60.20     243.82

Thanks for your help,

Sreeni