Having spent about a week moving some 1500 trace statements over to
lttng, I figured it was time to try a test run. Unfortunately there
seems to be a problem with the metadata.

Any clues as to what to try next?

stjernstrom at E7CH1SAPPHIRE23:~/sapphire> lttng create reg
Spawning a session daemon
Session reg created.
Traces will be written in
/home/stjernstrom/lttng-traces/reg-20161006-130344
stjernstrom at E7CH1SAPPHIRE23:~/sapphire> lttng enable-channel -u reg
--overwrite --buffers-pid -s reg --subbuf-size 1M
UST channel reg enabled for session reg
stjernstrom at E7CH1SAPPHIRE23:~/sapphire> lttng add-context -u -t
pthread_id
UST context pthread_id added to all channels
stjernstrom at E7CH1SAPPHIRE23:~/sapphire> lttng enable-event -u -c reg -a
All UST events are enabled in channel reg
stjernstrom at E7CH1SAPPHIRE23:~/sapphire> lttng start
Tracing started for session reg
stjernstrom at E7CH1SAPPHIRE23:~/sapphire> ${my_app}
stjernstrom at E7CH1SAPPHIRE23:~/sapphire> lttng stop reg
Waiting for data availability
Tracing stopped for session reg
stjernstrom at E7CH1SAPPHIRE23:~/sapphire> lttng view reg
Trace directory: /home/stjernstrom/lttng-traces/reg-20161006-130344

[error] at line 4295: token "(": syntax error, unexpected LPAREN,
expecting SEMICOLON or COMMA

[error] Error creating AST
[warning] Unable to open trace metadata for path
"/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/cferouternode_a-2006-20161006-130611".
[warning] [Context] Cannot open_trace of format ctf at path
/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/cferouternode_a-2006-20161006-130611.
[warning] [Context] cannot open trace
"/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/cferouternode_a-2006-20161006-130611"
from /home/stjernstrom/lttng-traces/reg-20161006-130344 for reading.
[error] at line 4295: token "(": syntax error, unexpected LPAREN,
expecting SEMICOLON or COMMA

[error] Error creating AST
[warning] Unable to open trace metadata for path
"/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/cmerouternode_a-2010-20161006-130611".
[warning] [Context] Cannot open_trace of format ctf at path
/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/cmerouternode_a-2010-20161006-130611.
[warning] [Context] cannot open trace
"/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/cmerouternode_a-2010-20161006-130611"
from /home/stjernstrom/lttng-traces/reg-20161006-130344 for reading.
[error] at line 4295: token "(": syntax error, unexpected LPAREN,
expecting SEMICOLON or COMMA

[error] Error creating AST
[warning] Unable to open trace metadata for path
"/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/controller-2001-20161006-130602".
[warning] [Context] Cannot open_trace of format ctf at path
/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/controller-2001-20161006-130602.
[warning] [Context] cannot open trace
"/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/controller-2001-20161006-130602"
from /home/stjernstrom/lttng-traces/reg-20161006-130344 for reading.
[error] at line 4295: token "(": syntax error, unexpected LPAREN,
expecting SEMICOLON or COMMA

[error] Error creating AST
[warning] Unable to open trace metadata for path
"/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/cmefeedernode_a-2013-20161006-130613".
[warning] [Context] Cannot open_trace of format ctf at path
/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/cmefeedernode_a-2013-20161006-130613.
[warning] [Context] cannot open trace
"/home/stjernstrom/lttng-traces/reg-20161006-130344/ust/pid/cmefeedernode_a-2013-20161006-130613"
from /home/stjernstrom/lttng-traces/reg-20161006-130344 for reading.
[error] Cannot open any trace for reading.

[error] opening trace
"/home/stjernstrom/lttng-traces/reg-20161006-130344" for reading.

[error] none of the specified trace paths could be opened.

stjernstrom at E7CH1SAPPHIRE23:~/sapphire> lttng destroy
Session reg destroyed
stjernstrom at E7CH1SAPPHIRE23:~/sapphire> lttng --version
lttng (LTTng Trace Control) 2.7.4 - Herbe à Détourne
stjernstrom at E7CH1SAPPHIRE23:~/sapphire> uname -a
Linux E7CH1SAPPHIRE23.faction.local 4.1.13-100.fc21.x86_64 #1 SMP Tue
Nov 10 13:13:20 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux