I have not seen the error myself, but I figured I would offer some suggestions that you MAY have already tried....
I would assume the filesystem corrupt message shows in your logs, so if you set the loglevel to 6 (which you probably have already done) you may get a more clear clue.
I would also assume that this means the guest filesystem. Maybe run a chkdsk to see what comes up? How about a defrag?
Maybe cloning the VM will "fix' it? At least it will give you a non-prod system to play with.
Another thing you can try is to restore the fullvm backup to a test environment and see if it can be duplicated. If it can, then I would definitely look at the guest filesystem.
Thanks - been there, done that
Also made sure that the host type was the same for ESX & the VCB Proxy. Odd...I had the customer open a support ticket w/VMware.
Technical Director, Virtualization
VMware Communities User Moderator
Yeah, I figured you pulled out that "Chalice of Knowledge" and tried everything. Post back when you figure it out and at least mark the question as answered...