Preparing Power LPARs for import into Skytap

Skytap provides tools to help you export your on-premises Power A CPU architecture that supports IBM i, AIX, and Linux (on Power) in Skytap Cloud. LPARs to disk images that you can then import into Skytap environments. The toolset consists of a pair of scripts that you copy to an empty hard disk on the same LPAR that you want to import into Skytap. The scripts make disk images of the hard disks that you specify and then create an OVF file that contains an index of all the hard disk images. Then you use the Skytap VM Import tool to create a VM from the OVF file and disk images.

  1. On the LPAR you intend to export, make sure that /etc/security/limits contains the following settings:

     default:
             fsize = -1
     root:
             data = -1
             fsize = -1
    
  2. Prepare rootvg for export using alt_disk_copy. For details, see the alt_disk_copy Command reference help.
  3. Download the Skytap aix-export tool from GitHub: https://github.com/skytap/aix-export.

    The Skytap aix-export tool consists of two scripts: export_lpar.ksh and make_ovf.ksh.

  4. On the LPAR you want to import to Skytap, copy the scripts to the target disk where the disk images will be saved. Make sure the target disk has enough space to accommodate all of the hard disks that you plan to export.
  5. Create the export package with the following command:

    /export_lpar.ksh hdisk1 [hdisk2] … [hdiskn]

    If there are multiple hard disks, be sure to specify the bootable hard disk first. In the example above, hdisk1 is the bootable disk.

    Do not include the hard disk where the export scripts are running. For example, if you copied the scripts to hdisk4, do not include hdisk4 in the export_lpar.ksh command line.

    1. Disk image (.img) files are created for all of the hard disks that you specified in the command, in the same directory where you ran export_lpar.ksh.
    2. When export_lpar.ksh completes, it automatically runs make_ovf.ksh to create <hostname>.ovf, which contains an index of the .img files that were exported by export_lpar.ksh.
    3. Recommended: To reduce file transfer times when you import the LPAR into Skytap, you can combine <hostname>.ovf and its indexed .img files into a single, compressed .ova file with the following command:

      tar -cvf - <hostname>.ovf <hostname>-disk1.img [<hostname>-disk2.img] … [<hostname>-diskn.img] | gzip > <hostname>.ova

      The combined, uncompressed file size of the LPAR hard disk image files must be less than 1 TB. If the collection of files to be imported exceeds 1 TB, contact Skytap Support at support@skytap.com to enable import of larger LPAR file sets.