Linux RN Limitations

Recovery Nodes running Linux have the following limitations:

•

To support booting of Recovery Nodes (RN) for RHEL 5.x/CentOS 5.x servers, you must download the appropriate version of Xen‑compatible kernel packages and install them on the Protected Nodes (PN) before enrolling or attempting to build the RNs for such clients. The installed Xen kernel will not be an active kernel on the PN; instead, that kernel will be used to boot the RNs. For more information, go to Install kernel‑xen RPM package.

•	The filesystem format is required to be set in the Protection Node Configuration for each RN disk to ensure that onQ protection starts correctly.

•	For RHEL 5.x/CentOS 5.x, the root disk partition (/) must be set to Format (file system type) parameter ext3 for the RN to boot correctly. The enrollment procedure, outlined in (Agent‑based Linux PNs) Enroll protected nodes, accounts for this limitation.

•	Linux PNs may return 256 code during an auto-upgrade. If you encounter this error, restart (stop/start) protection to re-initiate the auto-upgrade.

•	Network Manager, if installed on any Linux PN, must be turned off for self-tests to work correctly. Similar action needs to be taken if Kudzu services are running on the RHEL 5.x/CentOS 5.x versions.

•	BMR and incremental failback for Linux nodes are not supported in this release.

v3.8 HF1