I am having similar problem to you with ovirt and moosefs.

My setup, ovirt mounts the mfs mount without problem, it is the mount detection mechanism in python. It is very specifically looking for a pattern to match the mount and failing: I hope this shows what I mean:

OSError: [Errno 2] Mount of `mfsmount` at `/rhev/data-center/mnt/mfsmount` does not exist

mfsmaster:9421 on /rhev/data-center/mnt/mfsmount type fuse.mfs (rw,relatime,user_id=0,group_id=0,allow_other)

Source = mfsmount in first error out line, and source = ''mfsmaster:9421', and mount.py is trying to pattern match the mount and doesnt compare them correctly and fails.

I hope this prods your interest again or helps a little. I will go back to figuring out if I can work around this somehow.

Steve Kilduff