Veritas Storage Foundation for Oracle 5.0 Administrator's Guide, HP-UX 11i v3, Second Edition, December 2008

Before unmounting a file system, review the following:
■ A file system must exist and be mounted in order to be unmounted.Prerequisites
■ You cannot unmount a file system that is in use.
See the umount (1M) manual page for more information on
mounting file systems.
Usage notes
To unmount a file system
1
Use the fuser command to make sure that the file system is not being used:
# fuser -c /mount_point
where the -c option provides information on file system mount points and
any files within mounted file systems.
If the file system is being used and you need to unmount it, use the fuser
-ck command. See the fuser(1M) man page for more information.
2
Unmount the file system using one of the umount command options:
■ umount special
■ umount /mount_point
■ umount -f /mount_point
where:
■ special is a block special device
■ /mount_point is the location where the file system is mounted
■ -f forcibly unmounts the mount point
The following is an example of unmounting a file system:
To verify that the file system /db01 is not in use and then unmount the file
system:
# fuser -c /db01
/db01:
# umount /db01
About fragmentation
When free resources are initially allocated to files in a Veritas file system, they
are aligned in the most efficient order possible to provide optimal performance.
Setting up databases
About fragmentation
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