Re: [Xen-users] Xen reboots on dom-U disk stress...

[Roland Paterson-Jones <roland@xxxxxxxxxxxx>]

Mark Williamson wrote:

> > We're trying GNDB, iSCSI et al... (any preferences?)
> >    
> > From what I've heard, GNBD works pretty well and has the best performance of 
> the NBDs.  iSCSI is more sophisticated but may well be overkill for your 
> needs.
> With GNBD I imagine it's a simple matter to get the daemon to serve out the 
> disk file, so it should be pretty easy to convert your setup.  You could then 
> either have the domain use GNBD root (probably booting with an initrd), or 
> just re-export the device from dom0 as you have been doing.
>  
The 'nice' thing about loop-back files is that they are sparse, and are 
easy to dynamically create and destroy. The NBD's, on the other hand, 
need a dedicated device the far end (which tends to be a fairly static 
configuration). I guess the server-side device could be a loop-back 
device, but then you're pushing loop-back onto the server.
Mmmm ...
Roland


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