Migrating a file system one time

This example describes a one-time migration of data between two operating systems. Some of the following steps require a backup of the file system to be created. To simplify the process, you can create one backup before performing any of the steps instead of creating multiple backups as you go.

To perform a one-time migration

  1. If the underlying Volume Manager storage is not contained in a CDS disk group, it must first be upgraded to be a CDS disk group, and all other physical considerations related to migrating the storage physically between systems must first be addressed.

  2. If the file system is using a disk layout version prior to 7, upgrade the file system to Version 7.

    See the Veritas Storage Foundation Installation Guide.

  3. Use the following command to ensure that there are no files in the file system that will be inaccessible after migrating the data due to large file size or to differences in user or group ID between platforms:

    # fscdsadm -v -t target mount_point

    If such files exist, move the files to another file system or reduce the size of the files.

  4. Unmount the file system:

    # umount mount_point
  5. Use the fscdsconv command to convert the file system to the opposite endian.

  6. Make the physical storage and Volume Manager logical storage accessible on the Linux system by exporting the disk group from the source system and importing the disk group on the target system after resolving any other physical storage attachment issues.

  7. Mount the file system on the target system.

More Information

Converting a non-CDS disk group to a CDS disk group

Converting the byte order of a file system

Disk tasks