00:14:39.997  ========== Backtrace start: ==========
00:14:39.997  
00:14:39.997  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"])
00:14:39.997       ...
00:14:39.997     582 			echo "$rsp"
00:14:39.997     583 		done
00:14:39.997     584 	
00:14:39.997     585 		rc=${!status[*]}
00:14:39.997     586 		xtrace_restore
00:14:39.997  => 587 		[[ $rc == 0 ]]
00:14:39.997     588 	}
00:14:39.997     589 	
00:14:39.997     590 	function rpc_cmd_simple_data_json() {
00:14:39.997     591 	
00:14:39.997     592 		local elems="$1[@]" elem
00:14:39.997       ...
00:14:39.997  in /home/vagrant/spdk_repo/spdk/test/bdev/blockdev.sh:77 -> setup_bdev_conf([])
00:14:39.997       ...
00:14:39.997     72  			bdev_set_qos_limit --rw_mbytes_per_sec 100 Malloc3
00:14:39.997     73  			bdev_set_qos_limit --rw_ios_per_sec 20000 Malloc0
00:14:39.997     74  		RPC
00:14:39.997     75  	
00:14:39.997     76  		dd if=/dev/zero of="$SPDK_TEST_STORAGE/aiofile" bs=2048 count=5000
00:14:39.997  => 77  		"$rpc_py" bdev_aio_create "$SPDK_TEST_STORAGE/aiofile" AIO0 2048
00:14:39.997     78  	}
00:14:39.997     79  	
00:14:39.997     80  	function setup_nvme_conf() {
00:14:39.997     81  		local json
00:14:39.997     82  		mapfile -t json < <("$rootdir/scripts/gen_nvme.sh")
00:14:39.997       ...
00:14:39.997  in /home/vagrant/spdk_repo/spdk/test/bdev/blockdev.sh:696 -> main([])
00:14:39.997       ...
00:14:39.997     691 		wait_for_rpc="--wait-for-rpc"
00:14:39.997     692 	fi
00:14:39.997     693 	start_spdk_tgt
00:14:39.997     694 	case "$test_type" in
00:14:39.997     695 		bdev)
00:14:39.997  => 696 			setup_bdev_conf
00:14:39.997     697 			;;
00:14:39.997     698 		nvme)
00:14:39.997     699 			setup_nvme_conf
00:14:39.997     700 			;;
00:14:39.997     701 		gpt)
00:14:39.997       ...
00:14:39.997  
00:14:39.997  ========== Backtrace end ==========