On 21 Nov 2019, at 9:51, Eugene Grosbein wrote:
Hi!
How do I get boot messages generated by loader itself written to some
log after successfull boot?
This is generic BIOS-based 11.3-STABLE/amd64 system with syscons
console driver.
/var/run/dmesg.boot starts with kernel messages without previous lines
from the loader.
Specifically, I need messages about loading kernel modules with full
paths.
loader cannot write to the kernel message buffer as there is no kernel
yet. There might be possible ways to preserve that but I doubt loader
is fit for that task.
A boot -v (boot_verbose=“YES”) might spit the information out from
the kernel as well. Not sure if that helps you. However on modern
server machines a boot -v often overflows the message buffer.. so you
might have to tune that as well.
Extracted from an older console log of a random lab machine of someone
else:
..
WARNING: WITNESS option enabled, expect reduced performance.^M^@
WARNING: DIAGNOSTIC option enabled, expect reduced performance.^M^@
Preloaded elf kernel "/boot/kernel/kernel" at 0xffffffff80e66000.^M^@
Preloaded elf obj module "/boot/kernel/if_igb.ko" at
0xffffffff80e66968.^M^@
Preloaded elf obj module "/boot/kernel/nfscl.ko" at
0xffffffff80e66fd0.^M^@
Preloaded elf obj module "/boot/kernel/nfslock.ko" at
0xffffffff80e67638.^M^@
Preloaded elf obj module "/boot/kernel/nfssvc.ko" at
0xffffffff80e67ba0.^M^@
Preloaded elf obj module "/boot/kernel/krpc.ko" at
0xffffffff80e68088.^M^@
Preloaded elf obj module "/boot/kernel/nfscommon.ko" at
0xffffffff80e686b0.^M^@
Preloaded elf obj module "/boot/kernel/ahci.ko" at
0xffffffff80e68d20.^M^@
Preloaded elf obj module "/boot/kernel/cam.ko" at
0xffffffff80e69308.^M^@
Preloaded elf obj module "/boot/kernel/mfi.ko" at
0xffffffff80e699f0.^M^@
Preloaded elf obj module "/boot/kernel/geom_part_gpt.ko" at
0xffffffff80e6a058.^M^@
Preloaded elf obj module "/boot/kernel/sysvsem.ko" at
0xffffffff80e6a648.^M^@
Preloaded elf obj module "/boot/kernel/sysvshm.ko" at
0xffffffff80e6acb0.^M^@
Calibrating TSC clock ... TSC clock: 3400185886 Hz^M^@
CPU: Intel(R) Xeon(R) CPU X5272 @ 3.40GHz (3400.19-MHz
K8-class CPU)^M^@
..
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