I don't want to throw rocks, because I used to work for Larry (in fact, I wrote the original codebase for Ma.gnolia.com) and I like him.

But I distinctly remember talking about backups and how a raw sync of the innodb files wasn't really what we needed (it could sort of work in the original deploy of ma.gnolia, but would not scale as the site scaled). I'm kind of surprised that the community has been so tolerant of this failure. Personally, I'd be furious if I found out that a site I trusted lost all my data because they hadn't even tested their backup system.