[ltt-dev] ltt-control 0.67 "Connecting all markers" reports error

[Mathieu Desnoyers]

* srikanth krishnakar (skrishnakar at gmail.com) wrote:
> Hi Mathieu,
> 
> Linux kernel-2.6.29
> 
> Using ltt-control-0.67, on PPC32 target, running ltt-armall reports
> the following error:
> 
> root at ppc405:~# ltt-armall
> awk: (FILENAME=- FNR=1) fatal: attempt to access field -1
> Connecting all markers
> Connecting /ltt/markers/*/*
> /usr/bin/ltt-armall: line 25: can't create /ltt/markers/*/*/enable:
> nonexistent directory
> 
> 
> root at ppc405:~# ltt-armall
> Connecting all markers
> Connecting debugfs/*
> /usr/bin/ltt-armall: line 25: can't create debugfs/*/enable:
> nonexistent directory
> Connecting /mnt/debugfs/bdi
> /usr/bin/ltt-armall: line 25: can't create /mnt/debugfs/bdi/enable:
> Permission denied
> Connecting /mnt/debugfs/gpio
> /usr/bin/ltt-armall: line 25: can't create /mnt/debugfs/gpio/enable:
> nonexistent directory
> Connecting /mnt/debugfs/kprobes
> /usr/bin/ltt-armall: line 25: can't create
> /mnt/debugfs/kprobes/enable: Permission denied
> Connecting /mnt/debugfs/ltt
> /usr/bin/ltt-armall: line 25: can't create /mnt/debugfs/ltt/enable:
> Permission denied
> Connecting /mnt/debugfs/powerpc
> /usr/bin/ltt-armall: line 25: can't create
> /mnt/debugfs/powerpc/enable: Permission denied
> Connecting /mnt/debugfs/sched_features
> /usr/bin/ltt-armall: line 25: can't create
> /mnt/debugfs/sched_features/enable: nonexistent directory
> Connecting /mnt/debugfs/tracing
> /usr/bin/ltt-armall: line 25: can't create
> /mnt/debugfs/tracing/enable: Permission denied
> Connecting debugfs/*
> /usr/bin/ltt-armall: line 25: can't create debugfs/*/enable:
> nonexistent directory
> Connecting rw/*
> /usr/bin/ltt-armall: line 25: can't create rw/*/enable: nonexistent directory
> Connecting 0/*
> /usr/bin/ltt-armall: line 25: can't create 0/*/enable: nonexistent directory
> Connecting 0/ltt/markers/*/*
> /usr/bin/ltt-armall: line 25: can't create 0/ltt/markers/*/*/enable:
> nonexistent directory
> root at ppc405:~#
> 
> Is it the issue related to file system permission settings.
> 

I would first look at /mnt/debugfs to see if it is mounted..

was is your

# mount
output ?

and 

# find /mnt/debugfs

?

Then check to make sure all lttng modules are loaded, especially the
ones which populate debugfs with the LTTng API.

Mathieu



> Regards
> Srikanth Krishnakar
> **********************
> 
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-- 
Mathieu Desnoyers
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