Help with using MLN as a user

Carl Alexander | 4 May 2007 14:39

mln build hammers cpu and hangs

Yesterday I installed mln (version: 0.82b58) and had no issues
running the example simple network.  But my first attempt at
building a network of my own hangs almost immediately, though 
it continues to hammer my CPU if I leave it alone.

I tried it again with both the debug and verbose flags, but since
I don't know what to look for, that didn't help me much.  This
message would be way too long with a transcript of that, so I've
put it at

http://www.mit.edu/~xela/mln/typescript

I find it hard to imagine this could be the cause of the problem,
but I should mention that I ran mln enable_bridge before running
mln build, on the assumption the bridge should be there first.  

My network is, or anyway I thought it was, pretty straightforward:

global {
    project myuml
    $console = screen
}

switch lan {
    tap tap0
}

superclass my-vhosts {
    term $console
    template ubuntu-server-V0.1.ext3

(Continue reading)

headers

Kyrre M Begnum | 4 May 2007 21:52

Re: mln build hammers cpu and hangs


Hey Carl,

you found a silly error, thank you.

use a superclass/hostname without dashes "-", that should fix your  
issue. :)

On May 4, 2007, at 2:39 PM, Carl Alexander wrote:

> Yesterday I installed mln (version: 0.82b58) and had no issues
> running the example simple network.  But my first attempt at
> building a network of my own hangs almost immediately, though
> it continues to hammer my CPU if I leave it alone.
>
> I tried it again with both the debug and verbose flags, but since
> I don't know what to look for, that didn't help me much.  This
> message would be way too long with a transcript of that, so I've
> put it at
>
> http://www.mit.edu/~xela/mln/typescript
>
> I find it hard to imagine this could be the cause of the problem,
> but I should mention that I ran mln enable_bridge before running
> mln build, on the assumption the bridge should be there first.
>
> My network is, or anyway I thought it was, pretty straightforward:
>
> global {
>     project myuml

(Continue reading)

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Carl Alexander | 5 May 2007 06:28

Re: mln build hammers cpu and hangs

> Hey Carl,

Hi Kyrre---

Call me Alex; everyone else does.

>> you found a silly error, thank you.
> 
> use a superclass/hostname without dashes "-", that should fix your  
> issue. :)

It's working beautifully now, thank you.

---Alex

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John Sechrest | 4 May 2007 16:03

Re: mln build hammers cpu and hangs


Hello Carl,

      I remember that some of the problems we used to have with this,
      was when the host kernel did not have the right patches for
      doing virtualization. However, since your sample simple-network
      did work, this can't be the case.

      I don't see any syntax errors in the process. And it looks
      like you are only putting up a single host. 

      I would start by trying to converge between the simple network
      and your configuration. What works for it that does not work for yours.

      I see that you have plenty of memory, so that is not the 
      problem.

      So while, I don't have the answer yet, I am leaning towards
      a network hub/tap0 issue.

"Carl Alexander" <xela@...> writes:

 % Yesterday I installed mln (version: 0.82b58) and had no issues
 % running the example simple network.  But my first attempt at
 % building a network of my own hangs almost immediately, though 
 % it continues to hammer my CPU if I leave it alone.
 % 
 % I tried it again with both the debug and verbose flags, but since
 % I don't know what to look for, that didn't help me much.  This
 % message would be way too long with a transcript of that, so I've

(Continue reading)