samba - Aug 2004 - CIFS Server 2.2j Pb with locking : No locks available

I 've installed Samba on my Hp-Ux station and can access the files with
my Windows clients (a hundred client)...but one hour or more later i
face a problem :
Actual user : oK.
New access : Ko.
-------------------------------------------------------------------------------

Error message in the client logfile

2004/08/23 14:15:39, 0] tdb/tdbutil.c:(531)
  tdb(/var/opt/samba/locks/connections.tdb): tdb_lock failed on list 91
ltype=2
(No locks available)
-------------------------------------------------------------------------------

Environnment
HP Product :  HP CIFS Server 2.2j downloaded from Hp web site.

B8725AA               A.01.11.02     HP CIFS Server
on HP-UX 11.00
--
-----------------------------------------------------------------------------

Smb conf :
[global]
   security = share
[public]
   browseable = yes
   path = /public
   public = yes
   only guest = yes
   writable = yes
   printable = no
   create mask = 777
-------------------------------------------------------------------------------

You probably did not tune nflocks for Samba.  The default kernel 
variable will be exhausted quickly with Samba due to the extensive tdb 
locking.

As long as you are doing nflocks, you might as well do the other stuff too:

  nflocks
  (10*maximum smbd)+(other apps + system)
  example 1000 connected clients and baseline NFS system
  (10*1000)+(2048) = 12048

  nfile
  ((23+opens_per_smbd)*maximum smbd)+(other apps+system))
  example 1000 connected clients and baseline NFS system
  ((23+7)*1000)+(8192)=38192

  nproc
  (maximum smbd)+(other apps+system)
  example 1000 connected clients and baseline NFS system
  (1000)+(1024)=2024

Eric Roseme
Hewlett-Packard


Bernard Sagnol wrote:
> I 've installed Samba on my Hp-Ux station and can access the files with
> my Windows clients (a hundred client)...but one hour or more later i
> face a problem :
> Actual user : oK.
> New access : Ko.
>
-------------------------------------------------------------------------------
> 
> Error message in the client logfile
> 
> 2004/08/23 14:15:39, 0] tdb/tdbutil.c:(531)
>   tdb(/var/opt/samba/locks/connections.tdb): tdb_lock failed on list 91
> ltype=2
> (No locks available)
>
-------------------------------------------------------------------------------
> 
> Environnment
> HP Product :  HP CIFS Server 2.2j downloaded from Hp web site.
> 
> B8725AA               A.01.11.02     HP CIFS Server
> on HP-UX 11.00
> --
>
-----------------------------------------------------------------------------
> 
> Smb conf :
> [global]
>    security = share
> [public]
>    browseable = yes
>    path = /public
>    public = yes
>    only guest = yes
>    writable = yes
>    printable = no
>    create mask = 777
>
-------------------------------------------------------------------------------
>

On Tue, Aug 24, 2004 at 01:14:05PM +0200, Bernard Sagnol
wrote:
> I 've installed Samba on my Hp-Ux station and can access the files with
> my Windows clients (a hundred client)...but one hour or more later i
> face a problem :
> Actual user : oK.
> New access : Ko.
>
-------------------------------------------------------------------------------
> 
> Error message in the client logfile
> 
> 2004/08/23 14:15:39, 0] tdb/tdbutil.c:(531)
>   tdb(/var/opt/samba/locks/connections.tdb): tdb_lock failed on list 91
> ltype=2
> (No locks available)
>
-------------------------------------------------------------------------------
> 
> Environnment
> HP Product :  HP CIFS Server 2.2j downloaded from Hp web site.
> 
> B8725AA               A.01.11.02     HP CIFS Server
> on HP-UX 11.00
You need to increase the number of locks available in the kernel. It's
an HPUX kernal tuning parameter (when, oh when will they fix this :-).

Jeremy.