Managing Systems and Workgroups: A Guide for HP-UX System Administrators

Administering a System: Managing Disks and Files

Managing File Systems

Chapter 6646

NOTE See “Managing Access to Files and Directories” on page 753 for more

information about Access Control Lists, or ACLs, on HFS and JFS.

NOTE Before converting an existing HFS ﬁle system to a JFS ﬁle system, it is

critical to do a full backup of the ﬁle system.

Method 1: Copying the HFS to JFS on a New Logical Volume

Method 1:

Create and Copy

Use this method to convert an HFS ﬁle system to a JFS ﬁle system when

you want to minimize downtime and you have enough free space.

Step 1. Create a new logical volume using lvcreate (1M). For example, to create a

logical volume in volume group /dev/vg00:

lvcreate -l

new-size

/dev/vg00

See “Example: Creating a Logical Volume Using HP-UX Commands” on

page 575 for more detail.

Step 2. Create a new JFS ﬁle system on the new logical volume. For example:

mkfs -F vxfs /dev/vg00/rlvol5

See “Creating a File System” on page 603 for more detail.

Step 3. Mount the existing HFS ﬁle system read-only. For example:

Need ACL

conversion

script

yes yes maybe

Flexible yes yes no

Safe yes yes some risk

Table 6-9 File System Conversion Methods Comparison (Continued)

Method One:

Create and Copy

Method Two:

Replace HFS

with JFS

Method Three:

vxfsconvert