History

Seth Howell 241d04467d example/nvmf: always return after spdk_subsystem_init When the call to spdk_subsystem_init returns synchronously, calling the callback results in double iterating over states in the state machine. Returning after calling spdk_subsystem_init allows us to reliably begin executing after the callback function is executed with no double execution. Change-Id: Ieb9003acece7483c956f19be4f131c8d4f64fbaa Signed-off-by: Seth Howell <seth.howell@intel.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/480007 Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Community-CI: Broadcom SPDK FC-NVMe CI <spdk-ci.pdl@broadcom.com>		2020-01-13 01:47:30 +00:00
..
.gitignore	nvmf_example: add an nvmf example	2019-12-20 10:03:34 +00:00
Makefile	example/nvmf: fix nvmf example compilation with fc transport	2019-12-30 11:45:24 +00:00
nvmf.c	example/nvmf: always return after spdk_subsystem_init	2020-01-13 01:47:30 +00:00
README.md	nvmf_example: add an nvmf example	2019-12-20 10:03:34 +00:00

README.md

NVMe-oF target without SPDK event framework

Overview

This example is used to show how to use the nvmf lib. In this example we want to encourage user to use RPC cmd so we would only support RPC style.

Usage:

This example's usage is very similar with nvmf_tgt, difference is that you must use the RPC cmd to setup the nvmf target.

First, start this example app. You can use the -m to specify how many cores you want to use. The other parameters you can use -h to show. ./nvmf -m 0xf -r /var/tmp/spdk.sock

Then, you need to use the RPC cmd to config the nvmf target. You can use the -h to get how many RPC cmd you can use. As this example is about nvmf so I think you can focus on the nvmf cmds and the bdev cmds. ./scripts/rpc.py -h

Next, You should use the RPC cmd to setup nvmf target. ./scripts/rpc.py nvmf_create_transport -t RDMA -g nvmf_example ./scripts/rpc.py nvmf_create_subsystem -t nvmf_example -s SPDK00000000000001 -a -m 32 nqn.2016-06.io.spdk:cnode1 ./scripts/rpc.py bdev_malloc_create -b Malloc1 128 512 ./scripts/rpc.py nvmf_subsystem_add_ns -t nvmf_example nqn.2016-06.io.spdk:cnode1 Malloc1 ./scripts/rpc.py nvmf_subsystem_add_listener -t rdma -f Ipv4 -a 192.168.0.10 -s 4420 -p nvmf_example nqn.2016-06.io.spdk:cnode1

Last, start the initiator to connect the nvmf example target and test the IOs $ROOT_SPDK/example/nvme/perf/perf -q 64 -o 4095 -w randrw -M 30 -l -t 60
-r "trtype:RDMA adrfam:IPv4 traddr:192.168.0.10 trsvcid:4420 subnqn:nqn.2016-06.io.spdk:cnode1"