15.3. Live Migration and Red Hat Enterprise Linux Version Compatibility
Live Migration is supported as shown in Table 15.1, “Live Migration Compatibility”:
| Migration Method | Release Type | Example | Live Migration Support | Notes |
|---|---|---|---|---|
| Forward | Major release | 6.5+ | Fully supported | Any issues should be reported |
| Backward | Major release | 7.x | Not supported | |
| Forward | Minor release | 7.x | Fully supported | Any issues should be reported |
| Backward | Minor release | 7.y | Fully supported | Any 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.
Alternatively, use the NFS example in Section 15.4, “Shared Storage Example: NFS for a Simple Migration”
