[Samba] 100% CPU eaten -- tdb_fetch failed

Andrew Bartlett abartlet at samba.org
Sun Feb 29 06:37:57 GMT 2004

On Fri, 2004-02-27 at 09:26, Fabio Muzzi wrote: 
> Hello John,
> Thursday, February 26, 2004, 3:30:21 AM, you wrote:
> JHT> You should run the tdbbackup tool every time Samba (smbd) is shut down.
> JHT> Please refer to the man page for further information. The use of tdbbackup
> JHT> is a very important step to prevention of catastrophic problems with tdbs.
> It  should  be  a  good idea to include a tdbbackup run in the init script
> that  runs  samba  (I mean /etc/init.d/samba). Why don't you include it in
> the  standard  init  script that is included in the samba distribution? (I
> refer  to  the  debian  packages,  I  don't  know  about  the other binary
> distributions).

Because JHT is a bit overboard here...

The problem is that not all tdbs need to be backed up - indeed, the tdbs
described as the problem here (connections/messages/sessionid in
particular) should in fact be deleted at startup.

The tdb that *must* be backed up is probably winbindd_idmap.tdb, given
the drastic consequences of loosing that file.  

tdbbackup is reasonably new tool, and I'm sure patches to the init
scripts will be gratefully accepted.  

Andrew Bartlett

Andrew Bartlett                                 abartlet at pcug.org.au
Manager, Authentication Subsystems, Samba Team  abartlet at samba.org
Student Network Administrator, Hawker College   abartlet at hawkerc.net
http://samba.org     http://build.samba.org     http://hawkerc.net
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