<div dir="ltr">Adding `lager` in the startup phase can help as well because it reports progress for each application booted (much like adding SASL to your application will do). If you do add lager, be sure to set its overload protector high enough. I've seen it quaff messages in the first second because a lot is going on at boot time.<div><br></div><div>I've considered patching it for this, but haven't had the time yet to even suggest it in an issue.</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Mon, Feb 13, 2017 at 8:14 PM Onorio Catenacci <<a href="mailto:Catenacci@ieee.org">Catenacci@ieee.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="gmail_msg">Thanks Jesper. I had failed to spot the -init_debug option on the vm arguments. I'll start with that to see what it may tell me. I have some ideas of other things to try as well so if none of that solves the issue then I'll try to give a better description of the issue. At this point any suggestions to help me get more debugging detail are welcome so thanks much for the idea!</div><div class="gmail_extra gmail_msg"><br class="gmail_msg"><div class="gmail_quote gmail_msg">On Mon, Feb 13, 2017 at 1:54 PM, Jesper Louis Andersen <span dir="ltr" class="gmail_msg"><<a href="mailto:jesper.louis.andersen@gmail.com" class="gmail_msg" target="_blank">jesper.louis.andersen@gmail.com</a>></span> wrote:<br class="gmail_msg"><blockquote class="gmail_quote gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="gmail_msg">I'm not sure it is what you are after, but perhaps it can hit the battleship in a few shots if we try:<div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">Is 'erl -init_debug' what you are after in order to figure out what is the problem in the initialization phase? You can often figure out a way to pass that option to a release (by supplying it as part of the virtual machine arguments).</div><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">Another trick is to look around the message. Often, when do_boot() fails, it logs what is the problem around it.</div><div class="gmail_msg"><br class="gmail_msg"></div><div class="gmail_msg">Also, I've always found the Erlang boot sequence a bit lacking in information when debugging it, but perhaps I have just used it incorrectly. </div><div class="gmail_msg"><br class="gmail_msg"></div></div><br class="gmail_msg"><div class="gmail_quote gmail_msg"><div class="gmail_msg"><div class="m_2211265085272210182h5 gmail_msg"><div dir="ltr" class="gmail_msg">On Mon, Feb 13, 2017 at 2:44 AM Onorio Catenacci <<a href="mailto:Catenacci@ieee.org" class="gmail_msg" target="_blank">Catenacci@ieee.org</a>> wrote:<br class="gmail_msg"></div></div></div><blockquote class="gmail_quote gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="gmail_msg"><div class="m_2211265085272210182h5 gmail_msg"><div dir="ltr" class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg">Hi all,<div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"></div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg">Sorry for this noob question but my google-fu is not what it once was. </div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"></div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg">When I get a crash dump with the slogan "Init terminating in do_boot ()" and the boot script contains {progress} points such as would get reported by an init:get_status/0 message (like here:)</div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"></div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"> {progress,preloaded},</div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"></div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"></div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg">Does that get recorded in the crash dump somewhere? I suspect I know where the error is occurring but if I could find those progress messages in the crash dump it might help me to isolate which binary is having a problem getting loaded. </div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"></div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg">I mean to say there are a few {progress . . . } messages in the script and if I could figure out which one it's getting to before it crashes that would help me to rule in or rule out which binary it isn't finding or which one it's barfing on.</div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"></div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg">Also, is there any way to trace the loading of the .boot file which is compiled from the .script or do I have to basically build a command line to try to see what's the matter?<br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"></div><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"></div>-- <br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><div class="m_2211265085272210182m_-5961150023334583864m_-7708873699989441475gmail_signature m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><div dir="ltr" class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg">Onorio Catenacci<br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"> <br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><a href="http://onor.io" class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg" target="_blank">http://onor.io</a><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><a href="http://www.google.com/+OnorioCatenacci" class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg" target="_blank">http://www.google.com/+OnorioCatenacci</a><br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><div class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"><br class="m_2211265085272210182m_-5961150023334583864gmail_msg gmail_msg"></div></div></div></div>
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</blockquote></div><br class="gmail_msg"><br clear="all" class="gmail_msg"><div class="gmail_msg"><br class="gmail_msg"></div>-- <br class="gmail_msg"><div class="m_2211265085272210182gmail_signature gmail_msg" data-smartmail="gmail_signature"><div dir="ltr" class="gmail_msg">Onorio Catenacci<br class="gmail_msg"> <br class="gmail_msg"><a href="http://onor.io" class="gmail_msg" target="_blank">http://onor.io</a><div class="gmail_msg"><a href="http://www.google.com/+OnorioCatenacci" class="gmail_msg" target="_blank">http://www.google.com/+OnorioCatenacci</a><br class="gmail_msg"><div class="gmail_msg"><br class="gmail_msg"></div></div></div></div>
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