[SPDK] Re: For Dummies guide to setting up ramdisk NVMe/TCP target

Hi Eric



Refer to this page for HOWTO:

https://spdk.io/doc/nvmf.html



You said you want to run on one machine, suppose your machine’s IP is 8.8.8.6



  1.  Build your SPDK

git clone https://github.com/spdk/spdk spdk

cd spdk

git submodule update --init

./configure

make



  1.  Run:



Start target:

                ./build/bin/nvmf_tgt -m 0xf          (-m gives the CPU mask. Normally you can make it on the same CPU socket as network card to get better performance)



On another console, run rpc comamnds to do configuration:

./scripts/rpc.py nvmf_create_transport -t TCP      (there are lots of additional options you can use if you wish)

./scripts/rpc.py bdev_malloc_create -b Malloc0 200 512

./scripts/rpc.py nvmf_create_subsystem nqn.2016-06.io.spdk:cnode1 -a -s SPDK00000000000001 -d SPDK_Controller1

./scripts/rpc.py nvmf_subsystem_add_ns nqn.2016-06.io.spdk:cnode1 Malloc0

./scripts/rpc.py nvmf_subsystem_add_listener nqn.2016-06.io.spdk:cnode1 -t TCP -a 8.8.8.6 -s 4420                 (suppose 8.8.8.6 is the IP you want the target to listen on)



Run io:

./build/examples/perf -r 'trtype:TCP adrfam:IPv4 traddr:8.8.8.6 trsvcid:4420 subnqn:nqn.2016-06.io.spdk:cnode1'  -q 128 -o 4096  -w write -t 100 -c 0xf0  (-c give the cpu mask for perf tool, you’d better make it different with nvmf_tgt to get better performance)



Regards,

Rui





-----Original Message-----

From: eric.curtin(a)dell.com<mailto:eric.curtin(a)dell.com> <eric.curtin(a)dell.com<mailto:eric.curtin(a)dell.com>>

Sent: Thursday, October 1, 2020 3:23 PM

To: spdk(a)lists.01.org<mailto:spdk(a)lists.01.org>

Subject: [SPDK] For Dummies guide to setting up ramdisk NVMe/TCP target



Hi Guys,



I'm just getting started with SPDK and wanted to create a fake ramdisk NVMe/TCP target block device, just so I could simulate NVMe/TCP traffic on a single Linux instance for development purposes.



Anybody know how to set up a machine like this for NVMe/TCP development?

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