UNIX File System (UFS)

The following procedure describes how to deconfigure a disk being used by one or more UFS file systems.

1. Type su and your superuser password.

2. Identify activities or applications attached to the device you plan to remove.

   Commands to use are mount, showmount -a, and ps -ef. See the mount(1M), showmount(1M), and ps(1) man pages for more details.

   For example, where the controller number is 1 and the target ID is 2:

   ---

   # mount | grep c1t2
   /export/home1 on /dev/dsk/c1t2d0s2 setuid/read/write on
   # showmount -a | grep /export/home1
   cinnamon:/export/home1/archive
   austin:/export/home1
   swlab1:/export/home1/doc
   # ps -f | grep c1t2
   root  1225   450   4 13:09:58  pts/2   0:00 grep c1t2

   ---

   In this example, the file system /export/home1 on the faulty disk is being remotely mounted by three different systems--cinnamon, austin, and swlab1. The only process running is grep, which has finished.

3. Stop any activity or application processes on the file systems to be deconfigured.

4. Back up your system.

5. Determine what file systems are on the disk:

   ---

   # mount | grep cwtx
   

   ---

6. Unmount any file systems on the disk.

   ---

   Note -

   If the file systems are on a disk that is failing or has failed, the umount operation may not complete. A large number of error messages may be displayed in the system console and in the /var directory during the umount operation. If the umount operation does not complete, you may have to restart the system.

   ---

   For each file system returned, type:

   ---

    # umount filesystem
   

   ---

where filesystem is the first field for each line returned in Step 1.

For example:

# umount /export/home
# umount /export/home2

Removing the Disk Drive

Refer to the Sun Ultra 450 Workstation Owner's Guide or Ultra Enterprise 450 Server Owner's Guide for instructions on how to remove disk drives.