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
Limitations of Flexible Storage Sharing
Note the following limitations for using Flexible Storage Sharing (FSS):
FSS is only supported on clusters of up to 64 nodes.
Disk initialization operations should be performed only on nodes with local connectivity to the disk.
FSS does not support the use of boot disks, opaque disks, and non-VxVM disks for network sharing.
Hot-relocation is disabled on FSS disk groups.
The VxVM cloned disks operations are not supported with FSS disk groups.
FSS does not support non-SCSI3 disks connected to multiple hosts.
Dynamic LUN Expansion (DLE) is not supported.
FSS only supports instant data change object (DCO), created using the vxsnap operation or by specifying "logtype=dco dcoversion=20" attributes during volume creation.
By default creating a mirror between SSD and HDD is not supported through vxassist, as the underlying mediatypes are different. To workaround this issue, you can create a volume with one mediatype, for instance the HDD, which is the default mediatype, and then later add a mirror on the SSD.
For example:
# vxassist -g diskgroup make volume size init=none
# vxassist -g diskgroup mirror volume mediatype:ssd
# vxvol -g diskgroup init active volume