Per your suggestion I created the following bug report: https://bugs.lttng.org/issues/579
Thanks, Amit Margalit IBM XIV - Storage Reinvented XIV-NAS Development Team Tel. 03-689-7774 Fax. 03-689-7230 From: David Goulet <[email protected]> To: Amit Margalit/Israel/IBM@IBMIL Cc: [email protected] Date: 06/25/2013 05:08 PM Subject: Re: [lttng-dev] Problem setting a filter during enable-event, when done shortly after add-context Hi Amit, Can you please open an issue at bugs.lttng.org so we can have a trace of the issue somewhere along with the fix ? Thanks! David Amit Margalit: > 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 > > > This body part will be downloaded on demand.
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