I have a directory mounted over FUSE/SSHFS. It's an Ubuntu 10.04 client connected to an Ubuntu 10.04 server. My user has write permissions for the directory in question, and has been able to create folders before now. Nothing has changed in the configuration. But today, I get:
Error creating directory: Operation not permitted
...when attempting to make new folders via GUI in any directory that the user can normally write to. I can create files in those places, but not directories. Un-mounting and remounting SSHFS makes no difference.
I don't think it's misconfiguration but rather something has managed to mess itself up. I would prefer not to reboot the server. Anything else I can try?