LTTng » LTTng-tools

When you use

$ lttng-relayd -o .

to output the trace in the current directory, the directy structure is a little bit messed up:

current_dir
|-- (null)
|   `-- localhost
|       `-- auto-20130322-155155-20130322-155155
|           `-- kernel
|               |-- channel0_0
|               |-- channel0_1
|               |-- channel0_10
|               |-- channel0_11
|               |-- channel0_12
|               |-- channel0_13
|               |-- channel0_14
|               |-- channel0_15
|               |-- channel0_16
|               |-- channel0_17
|               |-- channel0_18
|               |-- channel0_19
|               |-- channel0_2
|               |-- channel0_20
|               |-- channel0_21
|               |-- channel0_22
|               |-- channel0_23
|               |-- channel0_24
|               |-- channel0_25
|               |-- channel0_26
|               |-- channel0_27
|               |-- channel0_28
|               |-- channel0_29
|               |-- channel0_3
|               |-- channel0_30
|               |-- channel0_31
|               |-- channel0_32
|               |-- channel0_33
|               |-- channel0_34
|               |-- channel0_35
|               |-- channel0_4
|               |-- channel0_5
|               |-- channel0_6
|               |-- channel0_7
|               |-- channel0_8
|               |-- channel0_9
|               `-- metadata

As you can see, there is a "(null)" directory that shouldn't be there. There is also some error messages (Error: : No such file or directory) in the relayd verbose output: http://pastebin.com/zEEKGD4E. Notice the empty path in the error message ? My little finger tells me it has something to do with "(null)" directory.

Here is a screencast demonstrating the issue.

http://nova.polymtl.ca/~simark/out-2.ogv

Yes, I had loads of fun doing it !