[lttng-dev] Trace Streaming problem

[David Goulet]

On 11 Feb (13:24:15), kumar s wrote:
> Hi,
> 
> I am trying to start the trace on MIPS board and dump it remotely on PC.
> 
> The steps i do
> On MIPS board:
> lttng create -U net://192.168.233.207 newsession
> 
> lttng enable-event lttng_statedump_start -k
> 
> Error: Event lttng_statedump_start: Unable to connect to lttng-relayd
> (channel channel0, session news)
> Warning: Some command(s) went wrong
> 
> In lttng-sessiond -vvv log
> 
> [...]
> DEBUG3 [1918/2019]: Consumer socket created (fd: 30) and added to output
> (in consumer_create_socket() at consumer.c:300)
> DEBUG1 [1918/2019]: Setting relayd for session news (in cmd_setup_relayd()
> at cmd.c:722)
> DEBUG3 [1918/2019]: Relayd connect ... (in relayd_connect() at relayd.c:466)
> PERROR [1918/2019]: connect: Connection refused (in
> lttcomm_connect_inet_sock() at inet.c:253)
> Error: Unable to reach lttng-relayd
> DEBUG1 [1918/2019]: Sending response (size: 16, retcode: Unable to connect
> to lttng-relayd) (in thread_manage_clients() at main.c:3973)
> DEBUG1 [1918/2019]: Clean command context structure (in clean_command_ctx()
> at main.c:672)
> DEBUG1 [1918/2019]: Accepting client command ... (in
> thread_manage_clients() at main.c:3837)
> 
> On the linux pc
> i have started lttng-relayd
> 
> lttng-relayd -vvv -C tcp://0.0.0.0:1234 -D tcp://0.0.0.0:5678 (as specified
> in doc folder of lttng-tools)

The relayd is started with different ports here so the session creation
should also specify those like so:

$ lttng create -U net://192.168.233.207:1234:5678

(or use -C/-D).

David

> 
> 
> Unfortunately i get error that lttng-relayd unable to connect. I also tried
> started lttng-relayd on mips board and running the same, still i get same
> error.
> 
> Can someone explain steps for lttng trace streaming or how i can dump the
> trace live onto PC.
> 
> Thank you
> Skumar

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> lttng-dev at lists.lttng.org
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