This seems to be related to some of the inode information being invalid in the overlayfs inodes:
$ ls -l ls: cannot access yyy: No such file or directory total 4 -rw-rw-r-- 1 mru mru 6 Aug 17 16:56 xxx -????????? ? ? ? ? ? yyy Investigating. ** Changed in: linux (Ubuntu) Status: Confirmed => In Progress ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Andy Whitcroft (apw) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1039402 Title: [quantal] overlayfs over r/o NFS mount fails to overwrite existing files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1039402/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs