On 5/6/20 12:28 PM, Fred Smith wrote: > Was running du to examine the sizes of my backups and > found du hung, /mnt/backup is probably a network-mounted filesystem that is offline for one reason or another. You could try "umount -f /mnt/backup" if you can't get the mount working by any other means. If that doesn't work, then "umount -l /mnt/backup" and reboot.