Comment 7 for bug 1013689

OK we've reproduced here I think on rh6.3
Or something very similar at least.

It seems that if you guestmount an image right after a _successful_ `fusermount -u`, the changes from the first mount can be discarded.

This mount, umount, mount, umount pattern can be seen with injected files are specified as they were implemented as a separate mount session to other injected stuff like admin_pass and .ssh/authorized_keys.

Multiple mounts is inefficient at least so we've tested the attached essex patch that merges the writes to a single mounted session. This was seen to avoid the issue and be much more efficient also.

Note we also tried adding a sync instead, but that had no effect.