On Mon, 2005-11-21 at 14:30 -0700, Kenneth Burgener wrote: > Gabriel Gunderson wrote: > > Main site: > > http://www.cl.cam.ac.uk/Research/SRG/netos/xen/ > > > > You could do a file backed VM and make snapshots of the file as you need > > to. Restoring a whole system would be as easy as `cp sys1.backup sys1`. > > Ubiquitous Xen is going to make things sweet for sysadmins. > > > > Gabe > > That is a very interesting idea. Is there a significant performance > loss running the VM?
Yes. About 1% overhead. Also if you use disk images, you take another hit, since all disk access has to pass through an extra layer (the host file system). In a real cluster this wouldn't be an issue since all storage would come off of a NAS system via iSCSI or fiber channel (which can be ported directly into the VM). Michael > > > /* > PLUG: http://plug.org, #utah on irc.freenode.net > Unsubscribe: http://plug.org/mailman/options/plug > Don't fear the penguin. > */ -- Michael Torrie <[EMAIL PROTECTED]> /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
