Sun Microsystems Sun Ultra 450, Manual

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UNIX File System (UFS)
The following procedure describes how to deconfigure a disk being used by one or
more UFS file systems.
Caution - These procedures should be performed only by a qualified system
administrator. Performing hot-plug operations on an active disk drive can result in
data loss if performed incorrectly.
Preparing to Replace the Disk Drive
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 c
w
t
x
For example, if the device to be removed is
c1t2d0
, enter the following:
# mount | grep c1t2
/export/home
(/dev/dsk/c1t2d0s7 ): 98892 blocks 142713 files
/export/home2 (/dev/dsk/c1t2d0s5 ): 153424 blocks 112107 files
22
♦
September 1998, Revision A