Fwd: Re: NFS Client error

[Giulio Ferro]

On 09.03.2010 10:14, Daniel Braniss wrote:
>> Thanks for your kind reply, I'm forwarding it there...
>>
>>
>> -------- Original Message --------
>> Subject: 	Re: NFS Client error
>> Date: 	Mon, 08 Mar 2010 23:59:29 +0100
>> From: 	volker at vwsoft.com
>> To: 	Giulio Ferro<auryn at zirakzigil.org>
>> CC: 	freebsd-hackers at freebsd.org, freebsd-net at freebsd.org
>>
>>
>>
>> On 03/08/10 12:16, Giulio Ferro wrote:
>>      
>>>   Freebsd 8 stable amd64
>>>
>>>   It mounts different file systems by NFS (with locking) on a
>>>   data server directly connected (gigabit) to the server
>>>
>>>   Apache running in a several jails on those nfs folders.
>>>
>>>   Now and then I get huge slow-down. When I look in the logs
>>>   I get thousand of lines like these:
>>>   Mar  5 11:50:52 virt2 kernel: vm_fault: pager read error, pid 46487 (httpd)
>>>   Mar  5 11:50:52 virt2 kernel: pid 46487 (httpd), uid 80: exited on
>>>   signal 11
>>>
>>>
>>>   What should I do?
>>>        
> If the binary (httpd) is on a nfs server, then if the binary got
> modified this is what usualy happens
>    

Nope. The binary is on the jails on the local machine.
Only the configuration dir (etc/apache22) and data dir (www)
in on the nfs server.

------------------------
|NFS CLIENT  |
| jail 1 : httpd |
| jail 2 : httpd |     ------>    NFS SERVER
| jail 3 : httpd |
|...                   |
-----------------------


Giulio.









> my 2c
> 	danny
>
>    
>> Giulio,
>>
>> it seems this is anyhow not related to network (nfs) operations. It's
>> looking like a problem in the VM. I think it makes sense to have a look
>> at the httpd.core file if the binary has been linked with debugging
>> symbols turned on. Also I think at first, it may not hurt to look at
>> vmstat -m output.
>>
>> You may want to change ${subject} and post to stable@ to drive more
>> attention to your problem.
>>
>> Volker
>>
>>
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>>      
>
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