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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LEARN ABOUT DEBIAN
perl::prereqscanner::scanner::perl5
Perl::PrereqScanner::Scanner::Perl5(3pm) User Contributed Perl Documentation Perl::PrereqScanner::Scanner::Perl5(3pm)
NAME
Perl::PrereqScanner::Scanner::Perl5 - scan for core Perl 5 language indicators of required modules
VERSION
version 1.012
DESCRIPTION
This scanner will look for the following indicators:
o plain lines beginning with "use" or "require" in your perl modules and scripts, including minimum perl version
o regular inheritance declared with the "base" and "parent" pragmata
Since Perl does not allow you to supply a version requirement with a "require" statement, the scanner will check the statement after the
"require Module" to see if it is "Module->VERSION( minimum_version );".
In order to provide a minimum version, that method call must meet the following requirements:
o it must be the very next statement after "require Module". Nothing can separate them but whitespace and comments (and one semicolon).
o "Module" must be a bareword, and match the "require" exactly.
o "minimum_version" must be a literal number, v-string, or single-quoted string. Double quotes are not allowed.
AUTHORS
o Jerome Quelin
o Ricardo Signes <rjbs@cpan.org>
COPYRIGHT AND LICENSE
This software is copyright (c) 2009 by Jerome Quelin.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
perl v5.14.2 2012-06-27 Perl::PrereqScanner::Scanner::Perl5(3pm)