Techniques are provided for producing a shadow directory structure for
files or directories owned by servers whose parent directories are owned
by different servers in a single distributed file system. For each file
or directory whose parent directory resides on a remote server, the
server owning the file or directory produces a shadow directory
structure. The shadow structure may be used in a variety of ways, e.g.,
to access an orphan when the server owning the orphan's parent directory
is offline (e.g., down, failed, or otherwise inaccessible), or to perform
a partial file system consistency check (a partial fsck) to verify
consistency of segments of the file system.