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-   -   console and dmesg and boot.log? (http://www.linux-archive.org/fedora-user/613214-console-dmesg-boot-log.html)

Tom Horsley 12-23-2011 12:01 PM

console and dmesg and boot.log?
 
Just for curosity, what the heck determines which dmesg
output shows up on the console during boot and which doesn't?
With rhgb turned off (so I can see what was just happening
if my system should freeze during boot), I see these lines
from dmesg zip past really early in the boot process:

[ 4.033526] sd 6:0:0:0: [sdc] No Caching mode page present
[ 4.033620] sd 6:0:0:0: [sdc] Assuming drive cache: write through
[ 4.034208] sd 6:0:0:0: [sdc] No Caching mode page present
[ 4.034296] sd 6:0:0:0: [sdc] Assuming drive cache: write through
[ 4.045027] sd 6:0:0:0: [sdc] No Caching mode page present
[ 4.045112] sd 6:0:0:0: [sdc] Assuming drive cache: write through

There are zillions of other lines of equally obscure dmesg lines
that don't show up on the console, so why these?

Even more annoying, these lines from dmesg don't appear in
the boot.log file, even though all the other lines that show
up on the console are in boot.log, so I guess the other
question is why they didn't make it to boot.log even though
they did appear on the console?
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