NFS Services Administrator's Guide

Troubleshooting NFS Services
Common Problems with NFS
Chapter 8298
If You Receive a “Device Busy” Message
❏ If you received the “device busy” message while attempting to mount
a directory, try to access the mounted directory. If you can access it,
then it is already mounted.
❏ If you received the “device busy” message while attempting to
unmount a directory, a user or process is currently using the
directory. Wait until the process completes, or follow these steps:
1. Issue the following command to determine who is using the
mounted directory:
/usr/sbin/fuser -cu local_mount_point
The fuser(1M) command will return a list of process IDs and
user names that are currently using the directory mounted
under local_mount_point. This will help you decide whether to
kill the processes or wait for them to complete.
2. To kill all processes using the mounted directory, issue the
following command:
/usr/sbin/fuser -ck local_mount_point
3. Try again to unmount the directory.