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August 23, 2019

File locking problem on jobs database Log Out | Topics | Search
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WebMO Support Forum » Administering WebMO » Job Manager » File locking problem on jobs database « Previous Next »

Author Message
Jim Giuliani
Unregistered guest
Posted on Thursday, January 15, 2009 - 12:23 pm:   

I am running version 8.0.011e and I frequently encounter the problem that a file lock gets place on the jobs database and never released. Further job submissions or queries cannot be processed because they cannot get a lock on the database.

I also don't see a version 8 in the support forum, so I'm asking the question here.
JR Schmidt
Moderator
Username: Schmidt

Post Number: 70
Registered: 11-2006
Posted on Thursday, January 15, 2009 - 12:47 pm:   

This is an issue that I have seen only once before, and dealt with an NFS bug with file locking.

Can you please send me a copy of your WebMO configuration file, and a description of your cluster configuration (in particular, which directories, if any, are NFS mounted).

I have seen a problem (only once!) where the WebMO 'user' directory was a remote NFS mounted on the web server (which was a Linux box) and the NFS server as a OpenBSD box.

This caused a problem with filelocking due to a known incompatibility/bug in that combination of NFS implementations.

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