Re: [Openexr-devel] File locking in Renderman OpenEXR display driver

[Drew Hess]

Hmm, if I had to guess, I'd say this is probably a problem with your NFS
server and your client machine's lockd.  OpenEXR doesn't do any locking on
its own.  We write OpenEXR files from Renderman to NFS filesystems all the
time and I haven't ever seen this problem.


-dwh-


On Wed, 17 Dec 2003, Casey Vanover wrote:

> Hey, guys.  I was wondering if anyone has had to deal with this.  I'm 
> using the OpenEXR display driver in Renderman and I'm having some 
> "hanging" issues.  From what I can tell, the driver is dying on the line:
> 
> _file = new OutputFile(filename, header);
> 
> and, it seems that the issue is that OpenEXR or some other agent is 
> trying to lock the file before writing to it.  As the file I'm writing 
> to is over NFS, the lock fails and the program hangs.  Has anyone else 
> run into this?  And, if so, did you find a fix.  At the very least, I 
> can render to a local file and copy that over NFS, but I was hoping 
> someone had a more elegant solution.
> 
> Pertinent Info:
> Renderman 11.5
> OpenEXR 1.0.6
> 
> 
> Thanks,
> 
> Casey
> 
> 
> 
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