I tried to unmount. As a matter of fact I figured out that process was stuck because I was trying to unmount my "backup" file system to switch to a USB based drive.
Anyway, it's moot now, I couldn't wait any longer and ended up rebooting the system.
Dave Goldblatt wrote:
That's what I suspected - the app is in an I/O wait (technically, "uninterruptible sleep"). Usually this is due to an NFS hang, although it can be caused by other media which has wedged but not timed out. One trick which sometimes works is to unmount the mount point it's stuck on.. if that doesn't work you're pretty much stuck.
You can try to force an unmount of a non-responsive NFS server by using the -f option for umount (and optionally add the -l option).
-- Greg Gulik http://www.gulik.org/greg/ greg @ gulik.org