[Qemu-discuss] qemu tracing issue. an assertion met. qemu 2.1.2

[Edward Young]

Hi all,

I use the simpletrace.py to analysis a event log and hit the following assert. Could someone tell me what's the problem?

address@hidden:~$ ./qemu_2.1.2/scripts/simpletrace.py events trace-*

Traceback (most recent call last):

  File "./qemu_2.1.2/scripts/simpletrace.py", line 195, in <module>

    run(Formatter())

  File "./qemu_2.1.2/scripts/simpletrace.py", line 169, in run

    events = _read_events(open(sys.argv[1], 'r'))

  File "/home/yyang/qemu_2.1.2/scripts/tracetool/__init__.py", line 263, in _read_events

    event = Event.build(line)

  File "/home/yyang/qemu_2.1.2/scripts/tracetool/__init__.py", line 198, in build

    assert m is not None

AssertionError

--- I use the following command to generate the log.

sudo /usr/local/kvm/bin/qemu-system-x86_64 -enable-kvm -drive file=/home/yyang/vm.img,if=virtio -cdrom /mnt/sys/sdb1/ubuntu-14.04.1-server-amd64.iso -boot d -m 4000 -trace events=/home/yyang/events

The events file is as follows:

bdrv_aio_readv

bdrv_aio_writev
Thanks!Ed