This section lists new and changed features included with the initial release of Red Hat Enterprise Linux 5.
GULM (Grand Unified Lock Manager) is not supported in Red Hat Enterprise Linux 5. If your GFS file systems use the GULM lock manager, you must convert the file systems to use the DLM lock manager. This is a two-part process.
While running Red Hat Enterprise Linux 4, convert your GFS file systems to use the DLM lock manager.
Upgrade your operating system to Red Hat Enterprise Linux 5, converting the lock manager to DLM when you do.
For information on upgrading to Red Hat Enterprise Linux 5 and converting GFS file systems to use the DLM lock manager, see Configuring and Managing a Red Hat Cluster.
Documentation for Red Hat Cluster Suite for Red Hat Enterprise Linux 5 has been expanded and reorganized. For information on the available documents, see Section 2, “Related Documentation”.