I need to keep some static web mirrors synced in as close to realtime as possible, but I also want it to be somewhat fail-safe (or at least not obvious to the visitors), so if the file server goes down the mount is automatically switched to the local copy. Is there a fs driver out there that can do that? Simply rsyncing isn't a good choice because of the sheer number of files involved. Failing an fs driver, is there some other solution to this problem?
All the servers in question are linux.
Best Answer
XtreemFS is a
OfflineFS aims to
and
I've not tried either, but the XtreemFS feature set looks promising.