nagios-cvs: Too many open files?

[Ethan Galstad]

Gaspar, Carson wrote:
>  
> 
>> -----Original Message-----
>> From: nagios-devel-bounces at lists.sourceforge.net 
>> [mailto:nagios-devel-bounces at lists.sourceforge.net] On Behalf 
>> Of Ethan Galstad
>> Sent: Wednesday, February 07, 2007 9:31 AM
>> To: Nagios Developers List
>> Subject: Re: [Nagios-devel] nagios-cvs: Too many open files?
> 
> ...
> 
>> LSOF returns entries for files that have already been deleted 
>> on my system...
>>
>> nagios     4034   nagios  DEL       REG        3,1             1141972 
>> /usr/local/nagios/tmp/nagios2e8Q7h
>>
>>
>> Looks like the kernel must keep references to these files even 
>> after they've been removed.  This appears to be true based on 
>> an article I just found:
>>
>> http://www.linux.com/article.pl?sid=06/10/30/1652211
>>
>> There's probably a way to tweak the kernel's behavior into 
>> immediately releasing these files once they've been deleted.  
>> Normally the kernel keeps references to deleted files in 
>> memory (at least for a while) until the process that deleted 
>> them exits.
>>
>> Any kernel gurus out there have a solution to this?
> 
> Not possible. The file is still being accessed, so the file still exists
> (if it didn't, you couldn't access it), so the kernel has to know about
> it. If you don't want a kernel reference, and you're done with the file,
> close the fd.
> 

Yeah, I think you're right.  I may have just found a bug, so I'll 
followup to Gerd's most recent message...


Ethan Galstad,
Nagios Developer
---
Email: nagios at nagios.org
Website: http://www.nagios.org

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