[K12OSN] Problems after LTSP update: No local USB, LocalApps can no longer save to profile

Thu Sep 16 03:33:41 UTC 2010

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On Sep 15, 2010, at 8:42 AM, Mathieu Pelletier wrote:

> Greetings,
>
> I recently updated my ltsp image (which was working well) and i  
> have now lost local devices.  I checked in lts.conf to see if the  
> update had messed with my config, but everything there appears to  
> be the same (both in /var/lib/tftpboot/ltsp/i386/lts.conf and /opt/ 
> ltsp/i386/etc/lts.conf).  Does anyone have any idea what has  
> changed?  How can I fix this?
>
> Also, it appears that local apps (I have firefox and OpenOffice  
> running local, or I DID) can no longer save to profiles /home/ 
> username/ (now this is outside the chroot directory).  Before I  
> could run the local apps (chrooted) and save to /home/username  
> (outside chroot).  I was originally a little confused by that  
> behaviour, but I got used it.  Now that its gone, I am at a loss.   
> I understand why the local app might not write/read the non-chroot  
> directory, but the change has changed and created some logistical  
> challenges.  How can I fix this?

Is /home still exported on the server, or isn't it being mounted on  
the client.
I'm assuming that the client needs to NFS mount /home for local apps  
to work.

> ~Thanks for the help!
>
> Mathieu Pelletier
> Biblical Studies Department
> Theological College of Zimbabwe
>
> Tel: +263 9 287032/3  Ext: 214
> mpelletier at tcz.co.zw
> www.tczonline.com
> Chat <gtalk.png>Google Talk: mkpelletier <skype.png>Skype:  
> mathieu.pelletier
>
>
> On 09/11/2010 06:00 PM, k12osn-request wrote:
>>
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>> Today's Topics: 1. Re: Sever load , calculating (Barry Cisna) 2.  
>> Re: Sever load , calculating (Les Mikesell) 3. ltsp-5.2.4-5.rpm's  
>> ready for testing (i686 & x86_64) (Gavin Spurgeon) 4. Re: Sever  
>> load , calculating (Barry Cisna) 5. Re: *NEW* ltsp-5.2.4-1.rpms  
>> are HERE !!!!!!!! (Brian Fristensky) 6. Re: Sever load ,  
>> calculating (Charlie) 7. Re: *NEW* ltsp-5.2.4-1.rpms are  
>> HERE !!!!!!!! (Patrick Fleming)  
>> --------------------------------------------------------------------- 
>> - Message: 1 Date: Fri, 10 Sep 2010 12:59:29 -0500 From: Barry  
>> Cisna <cisna-barry at wc235.k12.il.us> To: K12LTSP Mailing List  
>> <k12osn at redhat.com> Subject: Re: [K12OSN] Sever load , calculating  
>> Message-ID: <1284141569.18540.36.camel at hi2.wc235.k12.il.us>  
>> Content-Type: text/plain Hello All, Thanks to all for ideas... OK,  
>> I did find a couple interesting things in regards to CPU info.  
>> (This is listed in dmesg as P4/Xeon Extended,,blah,,blah,,,) When  
>> doing an cat /proc/cpuinfo The OS is seeing the processor as only  
>> 1,so I must have jacked upped and didn't enable 'hyper-threading'  
>> in the system bios. My bad. I think Monday I'll go into Bios and  
>> enable this and see if the thing boots up alright? Anyone have any  
>> ideas on this try?,,,:) Also when I do an dmesg | grep CPU,,,I get  
>> a line saying " CPU0 Temperature above threshold,cpu clock  
>> throttled". So I am guessing this could be hindering performance  
>> somewhat? All fans appear correct as I popped open the case lid  
>> and they seem to be spinning like mad as they should. Also In  
>> regards to question when I run top,I never see any processes  
>> eating cpu at all. This is what has me puzzled for the heavy loads  
>> showing at times? Take Care, BC ------------------------------  
>> Message: 2 Date: Fri, 10 Sep 2010 13:49:18 -0500 From: Les  
>> Mikesell <lesmikesell at gmail.com> To: k12osn at redhat.com Subject:  
>> Re: [K12OSN] Sever load , calculating Message-ID: <4C8A7DAE. 
>> 1020401 at gmail.com> Content-Type: text/plain; charset=ISO-8859-1;  
>> format=flowed On 9/10/2010 12:59 PM, Barry Cisna wrote:
>>>
>>> Hello All, Thanks to all for ideas... OK, I did find a couple  
>>> interesting things in regards to CPU info. (This is listed in  
>>> dmesg as P4/Xeon Extended,,blah,,blah,,,) When doing an cat /proc/ 
>>> cpuinfo The OS is seeing the processor as only 1,so I must have  
>>> jacked upped and didn't enable 'hyper-threading' in the system  
>>> bios. My bad. I think Monday I'll go into Bios and enable this  
>>> and see if the thing boots up alright? Anyone have any ideas on  
>>> this try?,,,:) Also when I do an dmesg | grep CPU,,,I get a line  
>>> saying " CPU0 Temperature above threshold,cpu clock throttled".  
>>> So I am guessing this could be hindering performance somewhat?  
>>> All fans appear correct as I popped open the case lid and they  
>>> seem to be spinning like mad as they should. Also In regards to  
>>> question when I run top,I never see any processes eating cpu at  
>>> all. This is what has me puzzled for the heavy loads showing at  
>>> times?
>> The ide drives sound like the weak link in that system. What do  
>> you see in %iowait with sar or iostat? And what kind of times do  
>> you see as the lower number from 'htparm -t -T devicename'? If it  
>> seems low, (below 50MB/sec or so), look through dmseg or /var/log/ 
>> messages to see how it is detected. You should see something like:  
>> hda: 488397168 sectors (250059 MB) w/8192KiB Cache,  
>> CHS=30401/255/63, UDMA(100) If it isn't UDMA(100) or higher you  
>> might need a newer controller - or lower modes can be triggered by  
>> a bad or old style cable.
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