From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=sandelman.ca (client-ip=2607:f0b0:f:3:216:3eff:fe7c:d1f3; helo=tuna.sandelman.ca; envelope-from=mcr@sandelman.ca; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=sandelman.ca Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 49gJ8K0M6SzDqVN for ; Mon, 8 Jun 2020 13:07:26 +1000 (AEST) Received: from localhost (localhost [127.0.0.1]) by tuna.sandelman.ca (Postfix) with ESMTP id E29BB389FA; Sun, 7 Jun 2020 23:04:51 -0400 (EDT) Received: from tuna.sandelman.ca ([127.0.0.1]) by localhost (localhost [127.0.0.1]) (amavisd-new, port 10024) with LMTP id HSftr2k9uoG9; Sun, 7 Jun 2020 23:04:50 -0400 (EDT) Received: from sandelman.ca (obiwan.sandelman.ca [IPv6:2607:f0b0:f:2::247]) by tuna.sandelman.ca (Postfix) with ESMTP id 772D7389EB; Sun, 7 Jun 2020 23:04:50 -0400 (EDT) Received: from localhost (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id 54ECD454; Sun, 7 Jun 2020 23:07:17 -0400 (EDT) From: Michael Richardson To: "Andrew Jeffery" cc: "Sui Chen" , openbmc@lists.ozlabs.org Subject: Re: An IPMI Request Visualization Tool In-Reply-To: <36873484-3078-4ec5-981e-88e59e619926@www.fastmail.com> References: <20200514135723.GE1166713@heinlein> <3d6db63b-f670-4e01-94c3-425f93d89708@www.fastmail.com> <2775.1590100786@dooku> <36873484-3078-4ec5-981e-88e59e619926@www.fastmail.com> X-Mailer: MH-E 8.6+git; nmh 1.7+dev; GNU Emacs 26.1 X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Jun 2020 03:07:29 -0000 --=-=-= Content-Type: text/plain Andrew Jeffery wrote: >> Interestingly, I was not that clearly aware of dbus-pcap :-) I ought >> to know more, as the lead libpcap maintainer. Is this visualization >> tool part of openbmc, or is it a generic dbus visualization tool? > It's not really a visualisation tool so much as a script that will > interpret the D-Bus-specifics of a D-Bus pcap. It's a commandline > script that provides filtering based on D-Bus match specifications. You > can capture all traffic on the system bus in any systemd-based system > with `busctl capture > /tmp/my.pcap` and then run `dbus-pcap my.pcap` > to dump the packet contents. Is this something that you'd like to be able to invoke remotely in order to get diagnostics/debugging info? >> We recently brought rpcapd into the mix; it can be invoked via ssh. I >> wonder if that might help you as a debug tool? > I'm not sure, I'm not familiar with rpcapd. I'll have a google. https://www.ca.tcpdump.org/manpages/rpcapd.8.html >> > If you ask how this user interface might differ from the already > >> existing dbus visualizers such as bustle, my answer would be: it will >> > present information in a way that's more relevant to the BMC, >> putting a > bit more focus on BMC-specific DBus messages, such as >> HWMon and RedFish > DBus messages, to present information in a high >> signal-noise ratio way. >> >> Would this need to run on the BMC itself? > Hopefully not given `busctl capture` ? Understood. -- ] Never tell me the odds! | ipv6 mesh networks [ ] Michael Richardson, Sandelman Software Works | IoT architect [ ] mcr@sandelman.ca http://www.sandelman.ca/ | ruby on rails [ --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEbsyLEzg/qUTA43uogItw+93Q3WUFAl7dq2UACgkQgItw+93Q 3WXpqQf+PGNTiNmsj3iqWdgiFBbr6bgQSoOLE7H4+SOOW90wRPgDg2zCE6N3rYMV lVF3kt4GKY38JoZspaaLNJ9VCATLu9AJq5XzfGZR68AAe/n+fDi8DgtQ6EpHcWeM RsyGfa1ZD011AOX9zXSo/zQYjqiyAY8iTh9T3FcRQKDF9FTR3ub+aNhJ+/4YMRTs AED3IPCWfMBfo7t9c5BW+V87CX8/84cYOBRZl3pCMwZitkpyHzwJ5Btbf7qPEnFm mEf25MHJOzcPulsO2DYb3PuFH3Wi9zqX+oiVOzRmtTKLt6jPWJbUyXsbopzqAEqz Ldb3Rssn2MDofz4iA5A1GbEbqowHLg== =hQwz -----END PGP SIGNATURE----- --=-=-=--