Kernel Summit 2007 - an advance view [LWN.net]

Kernel Summit 2007 - an advance view

Posted Aug 30, 2007 18:57 UTC (Thu) by aegl (subscriber, #37581)
In reply to: Kernel Summit 2007 - an advance view by intgr
Parent article: Kernel Summit 2007 - an advance view

"Even if the kernel runs fine, keep your eye on dmesg for OOPSes -- these
are definitely bugs regardless of whether they cause you problems."

If you are regularly testing development kernels, it is really useful to save the dmesg(1) output from every kernel that you boot. I added this to my /etc/rc.local

REL=`uname -r`
TSTAMP=`date +%Y%m%d%H%M%S`
dmesg -s 100000 > /dmesg/$TSTAMP-$REL

Then when I notice something odd happening I can check whether anything new and interesting showed up in the boot messages.

I've spotted a lot of issues by simply running diff(1) on the current and previous dmesg output.

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Kernel Summit 2007 - an advance view

Posted Sep 1, 2007 14:12 UTC (Sat) by kreutzm (guest, #4700) [Link]

Or use a tool to scan your log files (like logcheck). When I try out a new kernel, I immediately get all new lines which I can then add to the log check rules after I acknowledged them (and possibly took other action).