[Samba] too many open files

[David Disseldorp]

On Tue, 15 Apr 2014 10:17:03 +0200, Stefan Schäfer wrote:

> The logfile says:
> 
> "Apr 15 02:48:37 s4ad samba[3058]: [2014/04/15 02:48:37.495691,  0] 
> ../source4/smbd/process_single.c:57(single_accept_conn
> ection)
> Apr 15 02:48:37 s4ad samba[3058]: [2014/04/15 02:48:37.495905,  0] 
> ../lib/util/debug.c:595(reopen_logs_internal)
> Apr 15 02:48:37 s4ad samba[3058]:   Unable to open new log file 
> '/var/log/samba/log.samba': Too many open files
> Apr 15 02:48:37 s4ad samba[3058]:   single_accept_connection: accept: 
> NT_STATUS_TOO_MANY_OPENED_FILES
> Apr 15 02:48:38 s4ad samba[3058]: [2014/04/15 02:48:38.496541,  0] 
> ../source4/smbd/process_single.c:57(single_accept_conn
> ection)"
> 
> The last two message repeats many times until reboot.
> 
> It happens just when samba tries to open a new connection to its logfile.
> 
> Any ideas? Further information needed?

Looks like you've hit EMFILE. I'd suggest checking the list of fd's used
by the process with "ls -l /proc/$pid/fd". That should help you
determine whether the error is due to an fd leak somewhere.

"cat /proc/$pid/limits" will also show you the "Max open files" limits
for the process, which you may wish to raise.

Cheers, David