Hi Brett,
I could write some scripts to replace xm which could check for the existence of a lock file before attempting to start a VM but that seems a bit clunky.
Is there a proper way to do this?
A thread on the topic from the Xen mailing list: http://xen.markmail.org/search/?q=device+lock#query:device lock+page:1+mid:ouugxur56hqikqty+state:results
Cheers, Todd