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Full Discussion: Perl NFS file locking
Homework and Emergencies Emergency UNIX and Linux Support Perl NFS file locking Post 302619441 by ccj4467 on Thursday 5th of April 2012 12:33:44 PM
Old 04-05-2012
Perl NFS file locking

Got a weird problem.

I have a user that inherited a data processing system written in Perl. The system consists of about 150 Perl scripts and about 40 Fortran executables.

The system had been working fine until recently, when I changed our file server configuration.

First the system configuration.

Current configuration:
The main servers run Solaris 10 x86 update 8, File servers run CentOS 6.2

Originally all the data files were on local filesystems but the volume of data has grown to where the need for separate file servers were required. As a short term solution until I received the new hardware I had all of the data on a loaner machine that was running Ubuntu 10.04LTS the data directories were exported using NFS, the system ran fine under this configuration.

I migrated everything to the CentOS fileservers. The data is exported using NFS and mounted on the Solaris servers.

Now the problem starts, The Perl scripts use alot of file locking and they all hang when trying to unlock a file. I am not a Perl programmer by any means and I have Googled for this and have found no solutions.

Can anyone help?
 

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Authen::SASL::Perl::CRAM_MD5(3) 			User Contributed Perl Documentation			   Authen::SASL::Perl::CRAM_MD5(3)

NAME
Authen::SASL::Perl::CRAM_MD5 - CRAM MD5 Authentication class SYNOPSIS
use Authen::SASL qw(Perl); $sasl = Authen::SASL->new( mechanism => 'CRAM-MD5', callback => { user => $user, pass => $pass }, ); DESCRIPTION
This method implements the client part of the CRAM-MD5 SASL algorithm, as described in RFC 2195 resp. in IETF Draft draft-ietf-sasl-crammd5-XX.txt. CALLBACK The callbacks used are: user The username to be used for authentication pass The user's password to be used for authentication SEE ALSO
Authen::SASL, Authen::SASL::Perl AUTHORS
Software written by Graham Barr <gbarr@pobox.com>, documentation written by Peter Marschall <peter@adpm.de>. Please report any bugs, or post any suggestions, to the perl-ldap mailing list <perl-ldap@perl.org> COPYRIGHT
Copyright (c) 2002-2004 Graham Barr. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. Documentation Copyright (c) 2004 Peter Marschall. All rights reserved. This documentation is distributed, and may be redistributed, under the same terms as Perl itself. perl v5.18.2 2010-03-11 Authen::SASL::Perl::CRAM_MD5(3)
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