samba - Jun 2019 - <printername>.tdb error management...

Sometimes (rarely, very rarely) i spot a <printername>.tdb error that
seems to prevent the communication between samba and CUPS.

In log i see:

 [2019/06/26 15:15:49.633876,  0] ../source3/lib/util_tdb.c:316(tdb_log)
   tdb(/var/cache/samba/printing/sml5010-2.tdb): tdb_rec_read bad magic 0x25 at
offset=26096

the only solution i've found, pretty drastic, is:

 systemctl stop smbd.service; sleep 2; rm
/var/cache/samba/printing/sml5010-2.tdb ; systemctl start smbd.service


There's some better way to manage this? Thanks.

-- 
dott. Marco Gaiarin				        GNUPG Key ID: 240A3D66
  Associazione ``La Nostra Famiglia''         
http://www.lanostrafamiglia.it/
  Polo FVG   -   Via della Bont?, 7 - 33078   -   San Vito al Tagliamento (PN)
  marco.gaiarin(at)lanostrafamiglia.it   t +39-0434-842711   f +39-0434-842797

		Dona il 5 PER MILLE a LA NOSTRA FAMIGLIA!
      http://www.lanostrafamiglia.it/index.php/it/sostienici/5x1000
	(cf 00307430132, categoria ONLUS oppure RICERCA SANITARIA)

Hai marco, 

Hm, it looks like something is corrupting that tdb file. 
Even if you thing this is a rare problem, i suggest report this, because we
really dont want tdb file to get corrupted.

Few questions. 
What is the underlaying filesystem? 
Have you checked on for bad sectors on your disk ( in logs) 
Which drivers are you using for that Samsung ML-5010ND printer currently? 
.. how i know it printer name, google, that showed a message of last year ;-) 
And the output of: dpkg -l | grep tdb 

And for now that workaround it the only i know/would suggest. 

Greetz, 

Louis 


> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens 
> Marco Gaiarin via samba
> Verzonden: woensdag 26 juni 2019 18:44
> Aan: samba at lists.samba.org
> Onderwerp: [Samba] <printername>.tdb error management...
> 
> 
> Sometimes (rarely, very rarely) i spot a <printername>.tdb error that
> seems to prevent the communication between samba and CUPS.
> 
> In log i see:
> 
>  [2019/06/26 15:15:49.633876,  0] 
> ../source3/lib/util_tdb.c:316(tdb_log)
>    tdb(/var/cache/samba/printing/sml5010-2.tdb): tdb_rec_read 
> bad magic 0x25 at offset=26096
> 
> the only solution i've found, pretty drastic, is:
> 
>  systemctl stop smbd.service; sleep 2; rm 
> /var/cache/samba/printing/sml5010-2.tdb ; systemctl start smbd.service
> 
> 
> There's some better way to manage this? Thanks.
> 
> -- 
> dott. Marco Gaiarin				        GNUPG 
> Key ID: 240A3D66
>   Associazione ``La Nostra Famiglia''          
> http://www.lanostrafamiglia.it/
>   Polo FVG   -   Via della Bont?, 7 - 33078   -   San Vito al 
> Tagliamento (PN)
>   marco.gaiarin(at)lanostrafamiglia.it   t +39-0434-842711   
> f +39-0434-842797
> 
> 		Dona il 5 PER MILLE a LA NOSTRA FAMIGLIA!
>       http://www.lanostrafamiglia.it/index.php/it/sostienici/5x1000
> 	(cf 00307430132, categoria ONLUS oppure RICERCA SANITARIA)
> 
> -- 
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
> 
>

Mandi! L.P.H. van Belle via samba
  In chel di` si favelave...
> Hm, it looks like something is corrupting that tdb file. 
> Even if you thing this is a rare problem, i suggest report this, because we
really dont want tdb file to get corrupted.
Ok.
I add a note: looking better at logs, i've noted that other printer's
.tdb files seems corrupted, but printing work as expected...

> Few questions. 
> What is the underlaying filesystem? 
ext4.

> Have you checked on for bad sectors on your disk ( in logs) 
It is a proxmox cluster, with storage on a SAN.
Sme month ago i've got some ('software') disk trouble, now fixed.
So,
corruption could be ''historical''.
> Which drivers are you using for that Samsung ML-5010ND printer currently? 
Samsung Postscript.
> .. how i know it printer name, google, that showed a message of last year
;-)
?!
> And the output of: dpkg -l | grep tdb 
root at vdmsv1:~# dpkg -l | grep tdb
ii  libtdb1:amd64                      1.3.16+nmu-1.1~deb9               amd64  
Trivial Database - shared library
ii  python-tdb                         1.3.16+nmu-1.1~deb9               amd64  
Python bindings for TDB
ii  tdb-tools                          1.3.16+nmu-1.1~deb9               amd64  
Trivial Database - bundled binaries

> And for now that workaround it the only i know/would suggest. 
Ok. Thanks.

-- 
dott. Marco Gaiarin				        GNUPG Key ID: 240A3D66
  Associazione ``La Nostra Famiglia''         
http://www.lanostrafamiglia.it/
  Polo FVG   -   Via della Bont?, 7 - 33078   -   San Vito al Tagliamento (PN)
  marco.gaiarin(at)lanostrafamiglia.it   t +39-0434-842711   f +39-0434-842797

		Dona il 5 PER MILLE a LA NOSTRA FAMIGLIA!
      http://www.lanostrafamiglia.it/index.php/it/sostienici/5x1000
	(cf 00307430132, categoria ONLUS oppure RICERCA SANITARIA)