15.3. Live Migration and Red Hat Enterprise Linux Version Compatibility

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

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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.