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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 | |
Forward | Minor release | 7.x → 7.y (7.0 → 7.1) | Fully supported | Any issues should be reported |
Backward | Minor release | 7.y → 7.x (7.1 → 7.0) | 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”