[Samba] Locking Errors with Samba 2.2.3a on HP-UX 11.00

[Kerns, Mike]

Hiya!

You can also use kmtune(1m) to change the parameter.  We set kmtune to 2048
on an N-4000 running Samba, Oracle8i and Seagate's HOLOS.

To query the current value of nflocks do this:

	kmtune -q nflocks

svr1.root /root$ kmtune -q nflocks
Parameter            Value
============================================================================
===
nflocks              2048
svr1.root /root$

Then to change the parameter do the following:

	cd /stand/build

	/usr/lbin/sysadm/system_prep -s system

	kmtune -s nflocks = 2048 -S /stand/build/system

	config -u system

	mv /stand/system /stand/system.prev

	mv /stand/build/system /stand/system

	cd /

	shutdown -r -y 0

This will set kmtune to 2048, rebuild your kernel, and shutdown will reboot
it.  Of course, you might want to let your customers know you are going to
reboot before you do it, just a thought.  :)

HTH/HAND,

Mike Kerns                                             



> ----------
> From: 	MCCALL,DON (HP-USA,ex1)[SMTP:don_mccall at hp.com]
> Sent: 	Thursday, April 18, 2002 10:15 AM
> To: 	'Ehrke, Christian'; 'samba at lists.samba.org'
> Subject: 	RE: [Samba] Locking Errors with Samba 2.2.3a on HP-UX 11.00
> 
> Hi Christian,
> I suspect that this is simply a result of 2.2.3a needing/using more
> fcntl locks than it's predicessors, and that the nflocks kernel parameter
> in HP-UX is by default rather small (200).
> I would suggest that you use SAM to modify the kernel parameter 'nflocks',
> possibly up to about 1000 or so; this will require a regen and reboot,
> that
> SAM will do for you.
> 
> Also, take a look at the online HP-UX documentation for this samba version
> 
> at:
> 
> http://www.docs.hp.com/hpux/onlinedocs/B8725-90021/B8725-90021.html
> 
> There is a section called HP-UX Configuration for CIFS/9000 (samba) that
> discusses
> how to determine appropriate values for nflocks, as well as other kernel
> tuneable parameters that you will need to alter depending on # of users,
> etc.
> 
> Hope this helps,
> Don
> 
> 
> -----Original Message-----
> From: Ehrke, Christian [mailto:C.Ehrke at allweiler.de]
> Sent: Thursday, April 18, 2002 6:56 AM
> To: 'samba at lists.samba.org'
> Subject: [Samba] Locking Errors with Samba 2.2.3a on HP-UX 11.00
> 
> 
> Hello,
> 
> while running Samba 2.2.3a on HP-UX 11.00 the following error occured:
> 
> [2002/04/18 10:36:43, 0] tdb/tdbutil.c:tdb_log(475)
>   tdb(/opt/samba/var/locks/connections.tdb): tdb_lock failed on list -1
> ltype=2 (No locks available)
> [2002/04/18 10:36:43, 0] smbd/connection.c:claim_connection(187)
>   claim_connection: tdb_store failed with error Locking error.
> 
> For more detail see attached file SambaError.txt
> 
> The version of Samba 2.2.3a cmes as a binary distribution from the HP-UX
> Porting Center.
> 
> Mit freundlichem Gruß / Kind regards
> Christian Ehrke, Abt./Dept. ZOS
> Organisation/Informationsystems
> 
> ALLWEILER AG
> A Member of the 
> COLFAX PUMP GROUP
> Postfach 1140 . 78301 Radolfzell
> Allweilerstraße 1 .  78315 Radolfzell
> Germany
> Tel.  +49 (0)7732 86-509
> Fax +49 ((0)7732 86-552, 86-99509
> E-mail: C.Ehrke at allweiler.de
> http://www.allweiler.com
> 
>  <<SambaError.txt>> 
> 
> 
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