15.3. Live Migration and Red Hat Enterprise Linux Version Compatibility

Live Migration is supported as shown in Table 15.1, “Live Migration Compatibility”:

Table 15.1. Live Migration Compatibility

Migration Method Release Type Example Live Migration Support Notes
Forward Major release 6.5+ → 7.x Fully supported Any issues should be reported
Backward Major release 7.x → 6.y Not supported
ForwardMinor release7.x → 7.y (7.0 → 7.1)Fully supportedAny issues should be reported
BackwardMinor release7.y → 7.x (7.1 → 7.0)Fully supportedAny issues should be reported

Troubleshooting problems with migration

  • Issues with the migration protocol — If backward migration ends with "unknown section error", repeating the migration process can repair the issue as it may be a transient error. If not, report the problem.
  • Issues with audio devices — When migrating from Red Hat Enterprise Linux 6.x to Red Hat Enterprise Linux 7.y, note that the es1370 audio card is no longer supported. Use the ac97 audio card instead.
  • Issues with network cards — When migrating from Red Hat Enterprise Linux 6.x to Red Hat Enterprise Linux 7.y, note that the pcnet and ne2k_pci network cards are no longer supported. Use the virtio-net network device instead.
Configuring Network Storage

Configure shared storage and install a guest virtual machine on the shared storage.