Re: [Linux-cluster] GFS, DLM & RH-Cluster Suite

[Graham Wood <linux-cluster spam dragonhold org>]

Patricio Bruna V wrote:

> For the moment i dont (wont) have any kind of regular network connection
> (ethernet).
> So the only 2 posibilities i have for now are:
>
> 1. to setup a serial link
> 2. use net over usb (usbnet)
>
> so, basically my question is: would 1 or 2 work?
>
> thx
>  
In theory, the cluster software should work over any link.  Running ppp 
over the serial link, and/or usbnet, should be sufficient.  However, you 
will probably have to play with the timeout & other settings to get them 
to work over such a slow link.  It's also going to be incredibly slow to 
do anything.

If you're looking to use GFS (and don't have any shared storage) then 
you're going to have to use some method of faking that (GNBD, or 
similar) which will send more data over the "connection" too, and is 
likely to overload it if you're doing anything at all to the filesystem.

If you've got spare PCI slots, I'd SERIOUSLY recommend getting a pair of 
really cheap network cards & a crossover cable - they're relatively 
cheap these days, and here would probably be about the same cost in 
total as a USB<->USB cable!

Graham