Thanks Yang, adding the host line helped. Regards -kiru *From:* SPDK [mailto:spdk-bounces(a)lists.01.org] *On Behalf Of *Yang, Ziye *Sent:* Tuesday, September 05, 2017 10:41 AM *To:* Storage Performance Development Kit *Subject:* Re: [SPDK] NVMf target configuration issue And the other choice is to remove the Host related line, which means any host can connect. *From:* SPDK [mailto:spdk-bounces(a)lists.01.org ] *On Behalf Of *Yang, Ziye *Sent:* Tuesday, September 5, 2017 1:04 PM *To:* Storage Performance Development Kit *Subject:* Re: [SPDK] NVMf target configuration issue Hi Kiru, According to the error message, I suggest that you add the Host info in the following section. [Subsystem1] NQN nqn.2016-06.io.spdk:cnode1 Core 0 Listen RDMA 10.3.7.2:4420 Host nqn.2016-06.io.spdk:init * Host nqn.2014-08.org.nvmexpress:NVMf:uuid:5e5e0064-2ad6-4a43-9c26-063e3ef6cf14* SN SPDK00000000000001 Namespace AIO0 Thanks. *From:* SPDK [mailto:spdk-bounces(a)lists.01.org ] *On Behalf Of *Kirubakaran Kaliannan *Sent:* Tuesday, September 5, 2017 12:52 PM *To:* Storage Performance Development Kit *Subject:* [SPDK] NVMf target configuration issue Hi All, I am trying to get the nvmf configuration going with SPDK. I have the following configuration, *# ofed 2.4 on both target and initiator* *# SPDK + 3.18 kernel on target * *# 4.9 kernel on initiator* *# mellanox connect3X-Pro* */etc/spdk/nvmf.conf* [Global] [Rpc] Enable No Listen 127.0.0.1 [AIO] AIO /dev/sdd AIO0 [Nvmf] MaxQueuesPerSession 4 AcceptorPollRate 10000 [Subsystem1] NQN nqn.2016-06.io.spdk:cnode1 Core 0 Listen RDMA 10.3.7.2:4420 Host nqn.2016-06.io.spdk:init SN SPDK00000000000001 Namespace AIO0 *From initiator I tried discover and connect* *# nvme discover -t rdma -a 10.3.7.2 -s 4420* Discovery Log Number of Records 1, Generation counter 4 =====Discovery Log Entry 0====== trtype: rdma adrfam: ipv4 subtype: nvme subsystem treq: not specified portid: 0 trsvcid: 4420 subnqn: nqn.2016-06.io.spdk:cnode1 traddr: 10.3.7.2 rdma_prtype: not specified rdma_qptype: connected rdma_cms: rdma-cm rdma_pkey: 0x0000 *# nvme connect -t rdma -n "nqn.2016-06.io.spdk:cnode1" -a 10.3.7.2 -s 4420* Failed to write to /dev/nvme-fabrics: Input/output error [dmesg] [59909.541392] nvme nvme0: new ctrl: NQN "nqn.2014-08.org.nvmexpress.discovery", addr 10.3.7.2:4420 [59940.389952] nvme nvme0: Connect command failed, error wo/DNR bit: 388 *On target I get the following error* # app/nvmf_tgt/nvmf_tgt -c /etc/spdk/nvmf.conf > /tmp/1 EAL: Detected 20 lcore(s) reactor.c: 314:_spdk_reactor_run: *NOTICE*: Reactor started on core 0 on socket 0 copy_engine_ioat.c: 306:copy_engine_ioat_init: *NOTICE*: Ioat Copy Engine Offload Enabled nvmf_tgt.c: 215:nvmf_tgt_create_subsystem: *NOTICE*: allocated subsystem nqn.2014-08.org.nvmexpress.discovery on lcore 0 on socket 0 nvmf_tgt.c: 215:nvmf_tgt_create_subsystem: *NOTICE*: allocated subsystem nqn.2016-06.io.spdk:cnode1 on lcore 0 on socket 0 rdma.c: 955:spdk_nvmf_rdma_create: *NOTICE*: *** RDMA Transport Init *** rdma.c:1120:spdk_nvmf_rdma_listen: *NOTICE*: *** NVMf Target Listening on 10.3.7.2 port 4420 *** conf.c: 500:spdk_nvmf_construct_subsystem: *NOTICE*: Attaching block device AIO0 to subsystem nqn.2016-06.io.spdk:cnode1 nvmf_tgt.c: 290:spdk_nvmf_startup: *NOTICE*: Acceptor running on core 0 on socket 0 *request.c: 171:nvmf_process_connect: *ERROR*: Subsystem 'nqn.2016-06.io.spdk:cnode1' does not allow host 'nqn.2014-08.org.nvmexpress:NVMf:uuid:5e5e0064-2ad6-4a43-9c26-063e3ef6cf14'* can you please help on why I am not able to connect in this configuration. Regards, -kiru