Storage Foundation for Oracle® RAC 7.3.1 Administrator's Guide - Linux
- Section I. SF Oracle RAC concepts and administration
- Overview of Storage Foundation for Oracle RAC
- About Storage Foundation for Oracle RAC
- Component products and processes of SF Oracle RAC
- About Virtual Business Services
- Administering SF Oracle RAC and its components
- Administering SF Oracle RAC
- Starting or stopping SF Oracle RAC on each node
- Administering VCS
- Administering I/O fencing
- About the vxfentsthdw utility
- Testing the coordinator disk group using the -c option of vxfentsthdw
- About the vxfenadm utility
- About the vxfenclearpre utility
- About the vxfenswap utility
- Administering the CP server
- Administering CFS
- Administering CVM
- Changing the CVM master manually
- Administering Flexible Storage Sharing
- Backing up and restoring disk group configuration data
- Administering SF Oracle RAC global clusters
- Administering SF Oracle RAC
- Overview of Storage Foundation for Oracle RAC
- Section II. Performance and troubleshooting
- Troubleshooting SF Oracle RAC
- About troubleshooting SF Oracle RAC
- Troubleshooting I/O fencing
- Fencing startup reports preexisting split-brain
- Troubleshooting CP server
- Troubleshooting server-based fencing on the SF Oracle RAC cluster nodes
- Issues during online migration of coordination points
- Troubleshooting Cluster Volume Manager in SF Oracle RAC clusters
- Troubleshooting CFS
- Troubleshooting interconnects
- Troubleshooting Oracle
- Troubleshooting ODM in SF Oracle RAC clusters
- Prevention and recovery strategies
- Tunable parameters
- Troubleshooting SF Oracle RAC
- Section III. Reference
Troubleshooting I/O fencing health check warning messages
Table: Troubleshooting I/O fencing warning messages lists the warning messages displayed during the health check and corresponding recommendations for resolving the issues.
Table: Troubleshooting I/O fencing warning messages
Warning | Possible causes | Recommendation |
---|---|---|
VxFEN is not running on all nodes in the cluster. | I/O fencing is not enabled in the cluster. | Configure fencing. For instructions, see the Storage Foundation for Oracle RAC Configuration and Upgrade Guide. |
VxFEN is not configured in SCSI3 mode. |
| Start fencing in SCSI3 mode on all nodes in the cluster. |
VxFEN is running with only one coordinator disk. Loss of this disk will prevent cluster reconfiguration on loss of a node. Veritas recommends configuring a minimum of 3 coordinator disks. VxFEN is running with even number of coordinator disks. There must be odd number of coordinator disks. Replace the disk disk name using OCDR procedure. |
|
|
The coordinator disk (disk name) does not have the required key for the local node. | The key may have been accidentally removed. | Refresh the key on the coordinator disk. For instructions: |
SCSI3 write-exclusive reservation is missing on shared disk (disk_name) | The SCSI3 reservation is accidentally removed. | Shut down and restart SF Oracle RAC. When CVM restarts, CVM re-registers the key and places the reservation. |