[K12OSN] bootup slow -- nfs server not responding

Nils Breunese nils at breun.nl
Thu Sep 11 11:26:32 UTC 2008

Rob Owens wrote:

> Peter Scheie wrote:
>> Rob Owens wrote:
>>> george kocke wrote:
>>>> Rob Owens wrote:
>>>>> The reason I upgraded the RAM is because I've been getting slow  
>>>>> boot
>>>>> times on the thin clients, with the message "nfs server not  
>>>>> responding"
>>>>> showing up at least 10 times during the boot process.  The clients
>>>>> eventually boot successfully.  The upgrade didn't seem to help,  
>>>>> but
>>>>> hey,
>>>>> it was cheap and easy to try.
>>>> Sorry if anyone else has responded with this, but the URL below  
>>>> helped
>>>> me when I ran into this problem:
>>>> http://wiki.ltsp.org/twiki/bin/view/Ltsp/NFS#NFS_Server_not_responding
>>> This seems to have solved my problem.  I only tested it on PXE so  
>>> far,
>>> but the problem has completely disappeared when PXE booting.
>>> For the archives:
>>> My "append" line in pxelinux.cfg/default was slightly different  
>>> than the
>>> one shown on the wiki.  I simply added:
>>>    MOPTS=nolock,ro,wsize=2048,rsize=2048
>>> to the end of my existing "append" line.
>> I've had to use this same setting with some clients with 100Mb NICs  
>> when
>> they are plugged into a gigabit port on the swithc (say, an 8-port
>> switch with all gbit ports), even though they boot just fine when
>> plugged into a 100Mb port (and server is plugged into the gbit port).
> That's exactly my situation!  In fact, our old 100Mb switch (with  
> 1000Mb
> uplink) recently went bad, and was replaced with a full 1000Mb switch.
> I guess that must be when the trouble started.

AFAIK we also had to change the NFS options when we set up our K12LTSP  
5EL server. We use a gigabit switch and clients with old 100 Mb NICs.

Nils Breunese.

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