00:29:29.309  ========== Backtrace start: ==========
00:29:29.309  
00:29:29.309  in /var/jenkins/workspace/nvmf-phy-autotest/spdk/test/nvmf/host/fio.sh:76 -> main(["--transport=rdma"])
00:29:29.309       ...
00:29:29.309     71  		traddr=$NVMF_FIRST_TARGET_IP trsvcid=$NVMF_PORT ns=1" --bs=4096
00:29:29.309     72  		$rpc_py nvmf_delete_subsystem nqn.2016-06.io.spdk:cnode3
00:29:29.309     73  	
00:29:29.309     74  		sync
00:29:29.309     75  		# Delete lvol_bdev and destroy lvol_store.
00:29:29.309  => 76  		$rpc_py bdev_lvol_delete lvs_n_0/lbd_nest_0
00:29:29.309     77  		$rpc_py bdev_lvol_delete_lvstore -l lvs_n_0
00:29:29.309     78  		$rpc_py bdev_lvol_delete lvs_0/lbd_0
00:29:29.309     79  		$rpc_py bdev_lvol_delete_lvstore -l lvs_0
00:29:29.309     80  		$rpc_py bdev_nvme_detach_controller Nvme0
00:29:29.309     81  	fi
00:29:29.309       ...
00:29:29.309  
00:29:29.309  ========== Backtrace end ==========