On Sat, 2008-04-12 at 07:59 -0400, Ciro Iriarte wrote:
I can do live migration over my network, as all the DOM-0 machines share the images on the same SAN.
If you want easy scaling or doing frequently projects/tests, xen works great, if mind the traps mentioned above. Beside SAN, i should strongly recommend the use of LVM, for being able to resize the images. Start small, and let them grow if needed.
Hans
Now that you mention it, how do you use LVM on a LUN with more that one dom0 accessing the VG?
Yes, i have to confess, it's a bit tricky. All the dom-0's have with their fibrechannel cards full access to the same part of the san. Normally, when you try to launch the same dom-u twice from a single dom-0, xen will protect you from this mistake. In our case, there is no protection at all two dom-0 can launch the same dom-u, which leads to complete disk-image corruption is seconds. So i took following steps: a) a lamp-site with a bundle of scripts looking at all the dom-u and dom'0. reporting what runs where b) all our (Suse) dom-u are build entirely from an xml-description - universal disk-layout - fixed thread / packet selection - predefined sysconfig settings - length post-install scripts c) good backup/restore with rsnapshot ! Does that answer your Q? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org