Support Policies for RHEL Resilient Storage - ctdb General Policies

Updated -



Applicable Environments

  • Red Hat Enterprise Linux (RHEL) with the Resilient Storage Add-On

Useful References and Guides


This guide lays out Red Hat's policies applicable to the use of the Clustered Trivial Database for cifs exports - ctdb - in RHEL Resilient Storage deployments. Users of ctdb in RHEL Resilient Storage clusters should adhere to these policies in order to be eligible for assistance from Red Hat Support with the appropriate product support subscriptions.


Supported releases: Red Hat supports use of ctdb in all RHEL 7 releases, and in RHEL 6 Update 2 and later. That is, in RHEL 6 ctdb should be installed on a system that uses kernel, base operating system, High Availability and Resilient Storage packages from RHEL 6 Update 2 or later.

Typical samba policies and requirements apply: When using samba with ctdb to export data in an active/active manner using a RHEL Resilient Storage cluster, all other policies, limitations, and requirements for samba still apply. This may include, but is not necessarily limited to:

Policies for exporting gfs2 via CIFS with ctdb: Requirements and limitations may apply to exporting contents of a gfs2 filesystem via CIFS and ctdb.

No rolling updates of ctdb or samba or mixing versions: When using ctdb for CIFS exporting from a cluster, Red Hat only supports mixing versions of ctdb or samba packages if they come from the same minor release of RHEL - for example two different releases of ctdb from RHEL 7 Update 4. This should typically only be done on a short-term basis while applying "rolling updates". Mixing of releases of these packages from different RHEL minor releases is not supported, and discouraged, as it may result in unexpected behavior.