00:39:03.942  ========== Backtrace start: ==========
00:39:03.942  
00:39:03.942  in /var/jenkins/workspace/nvmf-phy-autotest/spdk/test/nvmf/host/fio.sh:76 -> main(["--transport=rdma"])
00:39:03.942       ...
00:39:03.942     71  		traddr=$NVMF_FIRST_TARGET_IP trsvcid=$NVMF_PORT ns=1" --bs=4096
00:39:03.942     72  		$rpc_py nvmf_delete_subsystem nqn.2016-06.io.spdk:cnode3
00:39:03.942     73  	
00:39:03.942     74  		sync
00:39:03.942     75  		# Delete lvol_bdev and destroy lvol_store.
00:39:03.942  => 76  		$rpc_py bdev_lvol_delete lvs_n_0/lbd_nest_0
00:39:03.942     77  		$rpc_py bdev_lvol_delete_lvstore -l lvs_n_0
00:39:03.942     78  		$rpc_py bdev_lvol_delete lvs_0/lbd_0
00:39:03.942     79  		$rpc_py bdev_lvol_delete_lvstore -l lvs_0
00:39:03.942     80  		$rpc_py bdev_nvme_detach_controller Nvme0
00:39:03.942     81  	fi
00:39:03.942       ...
00:39:03.942  
00:39:03.942  ========== Backtrace end ==========