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

Administering a System: Managing Disks and Files
Managing File Systems
Chapter 6 645
2. Create a new JFS file system on the logical volume containing the
HFS file system, and copy the HFS file system to the JFS file system.
Benefits: minimal space, safe, flexible
Requirements: • full backup
• if the file system uses ACLs, you must write a
script to convert them to JFS ACLs
• significant downtime, proportional to the size of
the file system
See “Method 2: Replacing the HFS with JFS on the Existing Logical
Volume” on page 648 for the procedure.
3. Use vxfsconvert to convert the HFS file system to a JFS file system.
Benefits: mostly automatic ACL conversion, moderate space,
moderate downtime
Risks: possible conversion failure, possible loss of data
Requirements: • full backup
• if the file system uses ACLs that are
incompatible with JFS ACLs, you must write a
script to convert them to supported ACLs
• moderate downtime
• some free space
See “Method 3: Converting from HFS to JFS Using vxfsconvert” on
page 650 for the procedure.
Use the following table to help evaluate which method best suits your
needs.
Table 6-9 File System Conversion Methods Comparison
Method One:
Create and Copy
Method Two:
Replace HFS
with JFS
Method Three:
vxfsconvert
Downtime least most moderate
Free Space most least medium