On 05.03.2011 19:42, Siddu wrote:
Hi all,
Hi all,
I am little stuck understanding this piece of code below and the way
its been working
Question: since KERN_INFO = 6 # which is msg_log_level
and as per code
*msg_log_level < console_loglevel*
this line of printk is not supposed to show up in the dmesg log ? but
it is showing up . Why
console_loglevel concern messages that should display on the CONSOLE not
"dmesg" and controls if message is enough important (read: have prioryty
below *console_loglevel) *to display it on the console. You must know
that, kernel logs its messages into buffer (into the RAM) which have
constant size, when you type dmesg, you simply read messages from that
buffer (ring-buffer), so that why you see your line in dmesg.
What is more, there is deamon called syslog (rsyslog) which reads this
buffer periodically and saves messages in appropriate log file on the
hard drive e.g. /var/log/kern.log or /var/log/messages etc. You can
configure rsyslog as you wish, to log certain types messages into logfiles.
--
regards
Andrzej Kardas
http://www.linux.mynotes.pl
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