Client specific logging

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When diagnosing a problem, Samba developers are likely to request a level 10 log file.

There are different reasons for creating client specific log files:

  • If the error appears only on specific clients and you won't change the config for all clients.
  • If you're running Samba with many clients level 10 logs can fill your disk space very fast and slow down your system.

Create a new config file /etc/samba/smb.conf.client-debug

# no log file size limitation
max log size = 0
# specific log file name
log file = /var/log/samba/log.%I
# set the debug level
log level = 10
# add the pid to the log
debug pid = yes
# add the uid to the log
debug uid = yes
# add the debug class to the log
debug class = yes
# add microsecond resolution to timestamp
debug hires timestamp = yes

Add the following line to your smb.conf at the end of the global section

include = /etc/samba/smb.conf.client-%I

To activate level 10 logging for e.g. client create a symbolic link:

ln -s /etc/samba/smb.conf.client-debug /etc/samba/smb.conf.client-

You do not have to restart all of Samba. If the client connects to your samba the smbd includes the /etc/samba/smb.conf.client- config file and writes the debug information to /var/log/samba/log. These changes will have no effect to other clients except For additional clients you can simply create additional symlinks.

For changing the log level temporary you can use smbcontrol runtime.

# set debug level for all smbd
smbcontrol smbd debug 10

# set debug level for process with pid 12345
smbcontrol 12345 debug 10

# request debug level for process with pid 12345
smbcontrol 12345 debuglevel