Date: Thu, 26 Jan 2017 00:13:55 +1100 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: David Christensen <dpchrist@holgerdanske.com> Cc: freebsd-questions@freebsd.org Subject: Re: How to capture console messages during boot? Message-ID: <20170125230947.T59687@sola.nimnet.asn.au> In-Reply-To: <mailman.109.1485345602.88614.freebsd-questions@freebsd.org> References: <mailman.109.1485345602.88614.freebsd-questions@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
In freebsd-questions Digest, Vol 660, Issue 3 Message: 19 On Tue, 24 Jan 2017 21:17:02 -0800 David Christensen <dpchrist@holgerdanske.com> wrote: > > On Tue, 24 Jan 2017 19:59:01 -0800 > > David Christensen <dpchrist@holgerdanske.com> wrote: > >> I am attempting to build a graphical workstation using: > >> [snip] > >> As I add software and adjust configuration settings, invariably I create > >> or encounter issues. Some of these generate warnings/ errors on the > >> console when the system boots. I'd like to capture console messages > >> during boot, so that I can review them and fix things. The old-fashioned way is to add to /etc/syslog.conf # uncomment this to log all writes to /dev/console to /var/log/console.log # touch /var/log/console.log and chmod it to mode 600 before it will work console.info /var/log/console.log and in /etc/newsyslog.conf perhaps (mode 640 so :wheel can read) /var/log/console.log 640 7 200 * J && service syslogd restart > On 01/24/17 20:45, Sergei Akhmatdinov wrote: > > 2. Use `dmesg -a`, maybe piped into `less` if you prefer. > > The -a switch should show you the boot process messages, which are normally > > suppressed. > > Yes, that's what I was looking for. That includes what's in both /var/log/messages and /var/log/consoie.log > On 01/24/17 21:07, Michael Sierchio wrote: > > cat /var/run/dmesg.boot > > That is incomplete -- I don't see all of the messages (just kernel, not > init?). If you choose verbose boot, or have added boot_verbose="YES" to /boot/loader.conf you'll get much more detailed messages (and dmesg) from boot and afterwards, but usually the same console.log - which is just what you'd see on the root console, if you were always looking :) cheers, Ian
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20170125230947.T59687>