[ltt-dev] no metadata tracefile

[Ji Zhai]

Hi Alexandre,

I got the metadata_0 and ust_0, which are in different directories, from a single invocation of usttrace. After copying metadata_0 and ust_0 into same directory, I used LTTV to open that directory and got the following error:

lttv -m textDump -t 9341_5652200832964231168

** ERROR **: Undescribed event 1 in channel ust
aborting...
/home/jizhai/MyLocal/LTTng/bin/lttv: line 15: 14715 Aborted                 $0.real $* 

As you mentioned, if there is endian problem, how to solve it?
Thanks!


Regards,

Ji

-----Original Message-----
From: Alexandre Montplaisir [mailto:alexandre.montplaisir at polymtl.ca] 
Sent: Thursday, September 15, 2011 9:32 AM
To: Ji Zhai
Cc: ltt-dev at lists.casi.polymtl.ca
Subject: Re: [ltt-dev] no metadata tracefile

Hi again,

On 11-09-14 02:05 PM, Ji Zhai wrote:
> 7. I used LTTV(0.12.36) to review the results:
>    
>    lttv -m textDump -t mcb00-main-aaillax-20110914130558687771830
>
> ** (process:20623): WARNING **: Trace /nas/jizhai/LTTng/mytrace/mcb00-main-aaillax-20110914130558687771830 has no metadata tracefile
>
> ** (process:20623): CRITICAL **: cannot open trace mcb00-main-aaillax-20110914130558687771830
> /home/jizhai/MyLocal/LTTng/bin/lttv: line 15: 20623 Segmentation fault      $0.real $*

This happens if you don't pass the right directory to "lttv -t". You
have to give it the one containing the metadata_* and ust_* files directly.

However from your tarball, your metadata_0 and ust_0 files are in
different subdirectories. Is this what you obtained from a single
invocation of usttrace? If so then it means your different channels end
up in separate traces, and this is definitely not normal behavior.

If you put both ust_0 and metadata_0 files in the same directory, and
open that directory with LTTv, what do you get? I couldn't open it from
here, but I think it has to do with different endianness.


Cheers,

-- 
Alexandre Montplaisir
DORSAL lab,
École Polytechnique de Montréal


 
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