Re: Error on debian....

From: Andrea Arcangeli <andrea_X_at_X_cpushare.com>
Date: Sat, 9 Dec 2006 02:01:19 +0100
To: Jason Hensler <omegadraconis_X_at_X_gmail.com>
Cc: cpushare-discuss_X_at_X_cpushare.com
Hello Jason,

On Thu, Dec 07, 2006 at 12:10:49PM -0500, Jason Hensler wrote:
> Ok, so i did somemore digging here and I found the line of failure to be:
> " $MKTAP cpushare --cpushare_hostname cpushare.cpushare.com --order
> $ORDER_CPU && \"

That's because you're running it as root. The script should already
check that you're not running it as root to prevent failures like
that. It's correct that it doesn't start, what's not correct is that
it didn't warn you that you shouldn't run it as root.

Could you run "echo $UID; uid -u"?

> The other thing I forgot to mention is I am trying to get this to run
> in colinux... But, before anyone brings up that this will not work
> because I need a 2.6.12 kernel with the seccomp patch, I am running
> the dev version 0.7.1 which has a 2.6.12 kernel, (can be found here
> http://www.henrynestler.com/, a note that dev version 0.8.0 has kernel
> 2.6.17). Inside of it I am running the debian image. Now I have had

Great effort, best would be a kernel based on 2.6.18! there were still
nasty security bugs in <2.6.18. Totally irrelevant for seccomp and
cpushare but for other usages it may matter.

> some trouble with the shell, I have to run sh ./CPUShare start ,may

strange, the script starts with:

	 #!/bin/sh

> just be me but, i've never had to do that although I'm from the
> freebsd camp not linux. So, I guess my questions get down to this,
> Should I try a diffrent distrobution? Is there any other things that

We need to make it work on all distro, so if there's any problem it's
good to know.

> could be causing this, I.E. an error with one of the packages? I hope
> to get this to work as I think it will be much faster than any other
> emulation (because it isn't emulation ;-) ) and my system shows only

Certainly it's the only open source not-emulation approach and it may
be the fastest (but that has to be measured, there are too many
variables involved to make up any guesses). kqemu, vmware, and
virtualpc2004 should also be not emulating anything while running the
livecd (except the OS interrupts etc..) but they're not open source,
colinux is open source instead.

The absolute best would be if somebody could make a auto-installing
.exe file that takes in input the livecd .iso and takes care of
executing it at boot in the background through colinux, sort of the
current colinux installer where you can choose which iso to download
from the network (for CPUShare you would need to add one more option
to select it from the local harddisk). At the moment the way to
achieve a setup.exe is with colinux because it's the only open source
solution we're in full control of. I written about that in the faq:

      https://www.cpushare.com/wiki/cpushare/FrequentlyAskedQuestions#head-7af1f173e80f11d1d76f85cc8622016eb610b303

If you could let me know how to detect when CPUShare is running under
colinux, and which version of colinux, I will also be able to block
any insecure client shall a colinux security bug emerge. Perhaps I can
detect it already with the uname -r? In such case I could already do
that without requiring any change to the CPUShare software.

> 10mb of ram used so that leaves more for computing.

Thanks for your efforts and sorry for the slight delay in my
answers.
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Received on 2006-12-09 02:00:34

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