00:15:45.038  ========== Backtrace start: ==========
00:15:45.038  
00:15:45.038  in /home/vagrant/spdk_repo/spdk/test/common/autotest_common.sh:587 -> rpc_cmd(["bdev_aio_create"],["/home/vagrant/spdk_repo/spdk/test/bdev/aiofile"],["AIO0"],["2048"])
00:15:45.038       ...
00:15:45.038     582 			echo "$rsp"
00:15:45.038     583 		done
00:15:45.038     584 	
00:15:45.038     585 		rc=${!status[*]}
00:15:45.038     586 		xtrace_restore
00:15:45.038  => 587 		[[ $rc == 0 ]]
00:15:45.038     588 	}
00:15:45.038     589 	
00:15:45.038     590 	function rpc_cmd_simple_data_json() {
00:15:45.038     591 	
00:15:45.038     592 		local elems="$1[@]" elem
00:15:45.038       ...
00:15:45.038  in /home/vagrant/spdk_repo/spdk/test/bdev/blockdev.sh:77 -> setup_bdev_conf([])
00:15:45.038       ...
00:15:45.038     72  			bdev_set_qos_limit --rw_mbytes_per_sec 100 Malloc3
00:15:45.038     73  			bdev_set_qos_limit --rw_ios_per_sec 20000 Malloc0
00:15:45.038     74  		RPC
00:15:45.038     75  	
00:15:45.038     76  		dd if=/dev/zero of="$SPDK_TEST_STORAGE/aiofile" bs=2048 count=5000
00:15:45.038  => 77  		"$rpc_py" bdev_aio_create "$SPDK_TEST_STORAGE/aiofile" AIO0 2048
00:15:45.038     78  	}
00:15:45.038     79  	
00:15:45.038     80  	function setup_nvme_conf() {
00:15:45.038     81  		local json
00:15:45.038     82  		mapfile -t json < <("$rootdir/scripts/gen_nvme.sh")
00:15:45.038       ...
00:15:45.038  in /home/vagrant/spdk_repo/spdk/test/bdev/blockdev.sh:696 -> main([])
00:15:45.038       ...
00:15:45.038     691 		wait_for_rpc="--wait-for-rpc"
00:15:45.038     692 	fi
00:15:45.038     693 	start_spdk_tgt
00:15:45.038     694 	case "$test_type" in
00:15:45.038     695 		bdev)
00:15:45.038  => 696 			setup_bdev_conf
00:15:45.038     697 			;;
00:15:45.038     698 		nvme)
00:15:45.038     699 			setup_nvme_conf
00:15:45.038     700 			;;
00:15:45.038     701 		gpt)
00:15:45.038       ...
00:15:45.038  
00:15:45.038  ========== Backtrace end ==========