Chapter 7. Migration to JFS

As you read in Section 1.3.2 File Systems, the Journaled File System (JFS) is new to OS/2 Warp Server for e-business but has been in existence on AIX for several years now. Many administrators will be interested in migrating their HPFS data partitions to JFS to take advantage of larger cache size, dynamic expansion capabilities, and transaction-oriented file systems included in JFS. This chapter discusses these migration considerations.

Note

Since not all of the functions of 386 HPFS (such as Fault Tolerance and DASD Limits) are not fully implemented in JFS; so, we do not expect that administrators will migrate 386 HPFS partitions to JFS, so we do not discuss this option. Our focus is to migrate data on HPFS drives to JFS volumes.

Note
Since not all of the functions of 386 HPFS (such as Fault Tolerance and DASD Limits) are not fully implemented in JFS; so, we do not expect that administrators will migrate 386 HPFS partitions to JFS, so we do not discuss this option. Our focus is to migrate data on HPFS drives to JFS volumes.

Since there is no utility to convert an existing volume to JFS, migrating applications and data is accomplished in one of two ways:

Backup, reformat the drive to JFS, and restore the data
Copy the data from the HPFS drive to the JFS volume

This chapter describes these two methods and their execution.

7.1 Using a Backup and Restore Program