Install now, upgrade later?

Sun Mar 21 03:20:25 GMT 2010

It looks like what has happened is the package names have changed from
jaunty to karmic.  I don't see a -pae package in jaunty but it exists in
karmic.  And in karmic linux-server is a metapackage for the -pae kernel.

Use the free -m command to check and see if ubuntu is seeing more then 4 GB
of ram while booted in the -server kernel.  If it is then you are all set

On Sat, Mar 20, 2010 at 11:13 PM, David Groos <djgroos at gmail.com> wrote:

> Sorry to keep bothering!  I got this:
> dgroos at gcos2:~$ sudo aptitude install linux-generic-pae
> [sudo] password for dgroos:
> Reading package lists... Done
> Building dependency tree
> Reading state information... Done
> Reading extended state information
> Initializing package states... Done
> Couldn't find any package whose name or description matched
> "linux-generic-pae"
> Couldn't find any package whose name or description matched
> "linux-generic-pae"
> No packages will be installed, upgraded, or removed.
> 0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
> Need to get 0B of archives. After unpacking 0B will be used.
> Reading package lists... Done
> Building dependency tree
> Reading state information... Done
> Reading extended state information
> Initializing package states... Done
> Any ideas?
> David
>
>
>
> On Sat, Mar 20, 2010 at 10:02 PM, ekul taylor <ekul.taylor at gmail.com>wrote:
>
>> That's strange it didn't select the pae kernel.  In that case install the
>> linux-generic-pae package.
>>
>> sudo aptitude install linux-generic-pae
>>
>>
>> On Sat, Mar 20, 2010 at 10:50 PM, David Groos <djgroos at gmail.com> wrote:
>>
>>> Thanks Ekul.  I didn't really understand what you meant by the dpkg so
>>> didn't go with that but did understand the sudo aptitude part :)  So I did
>>> this, it installed, I rebooted and checked:
>>>
>>> dgroos at gcos2:~$ uname -r
>>> 2.6.28-18-server
>>>
>>> Which doesn't have the -pae in the name.  Any ideas?
>>> David
>>>
>>>
>>>
>>> On Sat, Mar 20, 2010 at 4:29 PM, ekul taylor <ekul.taylor at gmail.com>wrote:
>>>
>>>> It's actually really easy to install a kernel if you use the
>>>> repositories.  dpkg adds your kernel to the list of available kernels so if
>>>> for any reason you have trouble you can simply use grub to boot into your
>>>> old kernel.  Among all package installations a new kernel is among the
>>>> safest since reverting is as easy as hitting escape during grub and choosing
>>>> the old kernel.
>>>>
>>>> I'm not sure what package mixture you have so I can't really deal with
>>>> that but installing the PAE kernel is as simple as:
>>>> sudo aptitude install linux-server
>>>> This will install the kernel and any necessary headers.  If you want to
>>>> run the karmic kernel but nothing else from karmic you'll have to do some
>>>> apt pinning.
>>>>
>>>> As for the reason you don't have the pae kernel I believe it is only
>>>> selected by default when installing via the server cd.  Any other method you
>>>> have to add it via apt after install.
>>>>
>>>> On Sat, Mar 20, 2010 at 12:34 PM, David Groos <djgroos at gmail.com>wrote:
>>>>
>>>>>  I find I'm not using the server kernel which surprises me--isn't that
>>>>> the one that the 'alternate CD' used?  Shouldn't that be the standard
>>>>> install for a thin client server using Edubuntu?
>>>>>
>>>>> So, how do I go about installing this kernel?  I used the link that
>>>>> Alkis provided and I could download the kernel.  I couldn't access it via
>>>>> Synaptic, probably because I've set sources to Jaunty but I wasn't sure how
>>>>> to set some to Karmic.  Any link/suggestion would be appreciated!  I don't
>>>>> want to willy-nilly upgrade a kernel, sounds like risky business.
>>>>>
>>>>> Thanks!
>>>>> David
>>>>>
>>>>> On Mar 19, 2010, at 4:35 PM, ekul taylor wrote:
>>>>>
>>>>> Run
>>>>> uname -r
>>>>> which will tell you the specific build of the kernel you are running.
>>>>>  If the PAE kernel is in use it will have -pae in the name.  if you don't
>>>>> see that you'll need to install the linux-server package.
>>>>>
>>>>> You can also run free -m as a check to ensure all your ram is being
>>>>> addressed.  However much you think there is should match the total column in
>>>>> MB.  If it doesn't something isn't quite working.
>>>>>
>>>>> On Fri, Mar 19, 2010 at 5:07 PM, David Groos <djgroos at gmail.com>wrote:
>>>>>
>>>>>> Thanks Ekul for the further info, I get it now.  I think I'll use
>>>>>> solution #1 below--sounds like it is doable and will help out with what I
>>>>>> need for these last couple of months of school then over summer power-up
>>>>>> with a new Lucid install.  I'm pretty sure I'm currently using the server
>>>>>> install.  How can I tell?
>>>>>>
>>>>>> David
>>>>>>
>>>>>>
>>>>>> On Fri, Mar 19, 2010 at 8:35 AM, ekul taylor <ekul.taylor at gmail.com>wrote:
>>>>>>
>>>>>>> The 32/64 bit question is very complicated.  Hopefully I can help.
>>>>>>>
>>>>>>> Any AMD Opteron or Intel Xeon server made in the past few years has
>>>>>>> support for running 32 bit and 64 bit code (even at the same time).  So you
>>>>>>> could clone your existing server and it would work fine but you might not be
>>>>>>> able to take advantage of all of your RAM.
>>>>>>>
>>>>>>> If you have more then 4 GB of RAM you have 3 options to use it all:
>>>>>>>
>>>>>>> 1. Clone your 32 bit server install but install the linux-server
>>>>>>> package if it isn't already used.  This kernel is PAE enabled which is
>>>>>>> something Intel developed to let 32 bit processors address more then 4 GB of
>>>>>>> RAM.  It does have slight performance issues and no one process can address
>>>>>>> more then 4 GB of RAM but for a terminal server this isn't important.
>>>>>>>
>>>>>>> 2.  Clone your 32 bit server but install and run a 64 bit kernel.
>>>>>>>  This can be tricky dependency-wise so I wouldn't recommend it so I won't
>>>>>>> outline the many steps here.
>>>>>>>
>>>>>>> 3.  Install a 64 bit version of edubuntu and reuse
>>>>>>> your configuration files from your old server.  It's pretty easy to do since
>>>>>>> except for /etc/modules.d and /etc/modprobe.conf none of the config files
>>>>>>> are about the kernel.  You do have to build your chroot a little differently
>>>>>>> if you use this option as thin clients will almost certainly need a 32 bit
>>>>>>> boot environment.  To do this you use the command:
>>>>>>> ltsp-build-client --arch i386
>>>>>>> instead of just ltsp-build-client.  This is what I option I would use
>>>>>>> when installing lucid but if you're just going to be using karmic for a few
>>>>>>> months option 1 will involve the least setup.
>>>>>>>
>>>>>>>
>>>>>>> On Fri, Mar 19, 2010 at 9:11 AM, David Groos <djgroos at gmail.com>wrote:
>>>>>>>
>>>>>>>> Confusion compounds...
>>>>>>>>
>>>>>>>> the one thing I might have understood...
>>>>>>>>
>>>>>>>>>
>>>>>>>>> If you install this kernel in Jaunty/Karmic, then you can access
>>>>>>>>> more
>>>>>>>>> than 4 Gb of RAM while having 32 bit systems/OS:
>>>>>>>>> http://packages.ubuntu.com/karmic/linux-server
>>>>>>>>>
>>>>>>>>> So you can do that either in the old or the new server.
>>>>>>>>>
>>>>>>>>
>>>>>>>> You're saying that:
>>>>>>>> --I could install the above kernel onto my current 32 bit hardware.
>>>>>>>> --then I could either:
>>>>>>>> --------install up to 64 Gb RAM on old server
>>>>>>>>                       or...
>>>>>>>> --------then I could clone this new setup to the new server.
>>>>>>>> ?
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> David
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> edubuntu-users mailing list
>>>>>>>>
>>>>>>>> edubuntu-users at lists.ubuntu.com
>>>>>>>>  Modify settings or unsubscribe at:
>>>>>>>> https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
>
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