Storage Foundation for Oracle® RAC 7.4.1 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
I/O fencing health checks
This section lists the health checks performed for I/O fencing, the messages displayed for each check, and a brief description of the check.
Note:
Warning messages indicate issues in the components or the general health of the cluster.
For recommendations on resolving the issues, see the troubleshooting chapter in this document.
Table: List of health checks for I/O fencing lists the health checks performed for I/O fencing.
Table: List of health checks for I/O fencing
List of health checks | Message | Description |
---|---|---|
Checks related to the working status of VxFEN | VxFEN is not configured in SCSI3 mode. VxFEN is not running on all nodes in the cluster. | Checks whether fencing is configured in SCSI3 mode and running on all nodes in the cluster. |
Checks related to coordinator disk health | 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. | Checks how many coordinator disks are configured for fencing and the status of the disks. |
Verify the keys on the coordinator disks | The coordinator disk (disk name) does not have the required key for the local node. | Checks whether the coordinator disks configured under I/O fencing has the key of the current node. |
Verify SCSI3 write-exclusive reservation on shared disk | SCSI3 write-exclusive reservation is missing on shared disk (disk_name) | Checks if the shared disk is accessible to the node for write operations. |