00:22:08.477  ========== Backtrace start: ==========
00:22:08.477  
00:22:08.477  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"])
00:22:08.477       ...
00:22:08.477     582 			echo "$rsp"
00:22:08.477     583 		done
00:22:08.477     584 	
00:22:08.477     585 		rc=${!status[*]}
00:22:08.477     586 		xtrace_restore
00:22:08.477  => 587 		[[ $rc == 0 ]]
00:22:08.477     588 	}
00:22:08.477     589 	
00:22:08.477     590 	function rpc_cmd_simple_data_json() {
00:22:08.477     591 	
00:22:08.477     592 		local elems="$1[@]" elem
00:22:08.477       ...
00:22:08.477  in /home/vagrant/spdk_repo/spdk/test/bdev/blockdev.sh:77 -> setup_bdev_conf([])
00:22:08.477       ...
00:22:08.477     72  			bdev_set_qos_limit --rw_mbytes_per_sec 100 Malloc3
00:22:08.477     73  			bdev_set_qos_limit --rw_ios_per_sec 20000 Malloc0
00:22:08.477     74  		RPC
00:22:08.477     75  	
00:22:08.477     76  		dd if=/dev/zero of="$SPDK_TEST_STORAGE/aiofile" bs=2048 count=5000
00:22:08.477  => 77  		"$rpc_py" bdev_aio_create "$SPDK_TEST_STORAGE/aiofile" AIO0 2048
00:22:08.477     78  	}
00:22:08.477     79  	
00:22:08.477     80  	function setup_nvme_conf() {
00:22:08.477     81  		local json
00:22:08.477     82  		mapfile -t json < <("$rootdir/scripts/gen_nvme.sh")
00:22:08.477       ...
00:22:08.477  in /home/vagrant/spdk_repo/spdk/test/bdev/blockdev.sh:696 -> main([])
00:22:08.477       ...
00:22:08.477     691 		wait_for_rpc="--wait-for-rpc"
00:22:08.477     692 	fi
00:22:08.477     693 	start_spdk_tgt
00:22:08.477     694 	case "$test_type" in
00:22:08.477     695 		bdev)
00:22:08.477  => 696 			setup_bdev_conf
00:22:08.477     697 			;;
00:22:08.477     698 		nvme)
00:22:08.477     699 			setup_nvme_conf
00:22:08.477     700 			;;
00:22:08.477     701 		gpt)
00:22:08.477       ...
00:22:08.477  
00:22:08.477  ========== Backtrace end ==========