Re: [CentOS] CentOS 6.8 and samba

1. What is your output of testparm?

No errors or warnings, apart from

rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)

2. If you run top, are any Samba related processes (winbindd, smbd, etc) consuming excessively high amounts of CPU?

I did not observe this, although the machine was running at a load of 1+ with no apparent culprit.

3. Have you considered cranking up or enabling logging to obtain some useful log info?

Considered, yes, executed, no ;-)

4. Has this Samba server run correctly in the past? If so, has anything changed recently?

Yes, it always has, and works perfectly with -33. Timestamp on smb.conf shows it was last modified under 3.6.23-24, followed by updates to -25, -30, -35. With trial and error, I settled on -33 as last working version.

5. You probably already know this but Samba 3.6.x is ancient. Have you considered running Samba 4.x? Centos 6 repos have Samba 4.2.10 packages.

Samba 4.x is an intimidating piece of software. If it can perfrom the same function and use the same config, I'm willing to try it.

6. Have you checked for corrupted Samba *.tbd files? Consider running tdbbackup:

https://www.samba.org/samba/docs/man/manpages-3/tdbbackup.8.html

See 4. .tdb files look ok and tdbbackup gives no errors.