Hi,
I seem to have a problem setting a filter during enable-event, which
happens in a script immediately after add-context succeeds. The error is
"Error: Invalid filter bytecode".
The sequence I am going through is in the following script excerpt:
lttng-sessiond with --no-kernel -v --verbose-consumer >> logfile
2>&1
lttng create samba -o /local/traces/lttng/20130625114835 >> logfile
2>&1
lttng enable-channel channel0 -u \
--tracefile-size ${LTTNG_MAX_TRACE_FILE_SIZE} \
--tracefile-count ${LTTNG_MAX_FILES_PER_CORE} \
--buffers-uid \
--switch-timer 1000000 \
--num-subbuf 16 \
--subbuf-size 262144 >> logfile
2>&1
lttng add-context -u -t procname -s samba -c channel0 >> logfile
2>&1
lttng enable-event -u -a --filter '$ctx.procname == "smbd" ||
$ctx.procname == "winbindd"'
The output is shown here (with the enable-event command-line reproduced:
Session samba created.
Traces will be written in /local/traces/lttng/20130625114835
UST channel channel0 enabled for session samba
UST context procname added to channel channel0
/usr/bin/lttng enable-event -u -a --filter '$ctx.procname=="smbd" ||
$ctx.procname=="winbindd"'
error syntax error
Parse error
Error: Invalid filter bytecode
If I try to wait after the failure for some time, I can run lttng
disable-event -u -a, and re-run the enable-event with the filter
successfully. But I tried to put the disable-event command in the script
and that didn't help - i.e. the "disable-event" command worked, but the
enable-event with filter still failed in the same way.
Suggestions?
Thanks,
Amit Margalit
IBM XIV - Storage Reinvented
XIV-NAS Development Team
Tel. 03-689-7774
Fax. 03-689-7230_______________________________________________
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