What could cause this rename error?

[GuentherF]

There are some backup/archiving tools which open directory files exclusively to scan for alias name entries.

/Guenther

[Jess Goodman]

I think I tracked down what is causing the errors for one of my problem directories.  The graphic files in this directory are served by the OSU webserver.  In both web access logs at the times that the last two RENAME errors occurred for directory [SIR] I found this request:

HEAD /rooted_logical/sir

Apparently this request causes the webserver to open the directory file for read access with only read sharing allowed.

Jess