Cannot unmount NFS if filesystem.
I have a NFS mounted to a Solaris box. If I lose connection to that system I cannot umount the filesystem on my Redhat box. Any time I try to do anything with the filesystem, even just ls, it locks up the shell. I can issue a umount -f command and that will unfreeze all of the shells, but I get a "device busy" message. After that if I try to do anything on that filesystem it freezes again, and the circle continues. Is there anything "stronger" that umount -f?