Any tips on debug logging in Merlin's fork?

[BaudelaireNG]

having

logmessage("watchdog02", "no wathdog, restarting");

in watchdog.c, if I

killall watchdog

I assume I should see this message in /tmp/syslog.log, but it's not there.
Any tips on general user debugging (logging, seeing internal states) and enabling logging off above example? Especially interested in log debugging rc system

My config is:
Router: Asus-N66U
Firmware: 374.43_2-17BAj9527

nvram show | grep log:

dhcpd_querylog=1
log_ipaddr=192.168.2.10
log_port=514
webdav_last_login_info=
message_loglevel=7
login_port=80
log_size=256
cron_loglevel=8
debug_logeval=0
log_small=1
jffs2_log=0
debug_logrc=0
log_level=7
vpn_loglevel=3
login_ip_str=192.168.2.10
login_timestamp=37869
ntp_log_x=1
http_autologout=30
size: 56401 bytes (9135 left)
console_loglevel=5
fw_log_x=none
login_ip=168405184

nvram show | grep debug:

debug_ovrc=0
v2_debug=0
debug_cprintf_file=0
ipv6_debug=0
debug_logeval=0
asus_debug=0
debug_logrc=0
di_debug=0
dw_debug=0
debug_cprintf=0
size: 56401 bytes (9135 left)
vpn_debug=0
debug_abrst=0

 

[Fitz Mutch]

Have you tried seeing what's dumped to the console port? Open the router case to identity the four pins TX,RX,---,GND. You don't need to connect VCC. Your USB-to-Serial converter should be set for TTL logic level 3.3V.

 

[ColinTaylor]

having

logmessage("watchdog02", "no wathdog, restarting");

in watchdog.c, if I

killall watchdog

I assume I should see this message in /tmp/syslog.log, but it's not there.

Works for me:

Mar 25 18:45:54 watchdog02: no watchdog, restarting

 

[BaudelaireNG]

Have you tried seeing what's dumped to the console port? Open the router case to identity the four pins TX,RX,---,GND. You don't need to connect VCC. Your USB-to-Serial converter should be set for TTL logic level 3.3V.

This is something I wish to try at least once in my life, but not with home-critical infrastructure , but who knows, Thanks for reminder tho

Works for me:

Mar 25 18:45:54 watchdog02: no watchdog, restarting

Thanks for confirmation. Now I have this sorted. Changing "Log only messages with prioryty greater than" to "All" fixed it. Yes it was that bad.

Any other info on how to sqeeze even more info out of this soft greatly appreciated.