Using Serviceguard Extension for RAC, 2nd Edition, February 2005 Update
Table Of Contents
- Using Serviceguard Extension for RAC
- 1 Introduction to Serviceguard Extension for RAC
- 2 Serviceguard Configuration for Oracle RAC
- Planning Database Storage
- Installing Serviceguard Extension for RAC
- Configuration File Parameters
- Creating a Storage Infrastructure with LVM
- Building Volume Groups for RAC on Mirrored Disks
- Building Mirrored Logical Volumes for RAC with LVM Commands
- Creating RAC Volume Groups on Disk Arrays
- Creating Logical Volumes for RAC on Disk Arrays
- Oracle Demo Database Files
- Displaying the Logical Volume Infrastructure
- Exporting the Logical Volume Infrastructure
- Installing Oracle Real Application Clusters
- Cluster Configuration ASCII File
- Creating a Storage Infrastructure with CVM
- Initializing the VERITAS Volume Manager
- Preparing the Cluster for Use with CVM
- Starting the Cluster and Identifying the Master Node
- Converting Disks from LVM to CVM
- Initializing Disks for CVM
- Creating Disk Groups for RAC
- Creating Volumes
- Oracle Demo Database Files
- Adding Disk Groups to the Cluster Configuration
- Using Packages to Configure Startup and Shutdown of RAC Instances
- Starting Oracle Instances
- Creating Packages to Launch Oracle RAC Instances
- Configuring Packages that Access the Oracle RAC Database
- running cluster:adding or removing packages
- Writing the Package Control Script
- Using Serviceguard Manager to Write the Package Control Script
- Using Commands to Write the Package Control Script
- Customizing the Package Control Script
- Optimizing for Large Numbers of Storage Units
- Customizing the Control Script for RAC Instances
- Configuring an Oracle RAC Instance Package
- Using Serviceguard Manager to a Configure Oracle RAC Instance Package
- Enabling DB Provider Monitoring
- 3 Maintenance and Troubleshooting
- Reviewing Cluster and Package States with the
- Managing the Shared Storage
- Removing ServiceGuard Extension for RAC from a System
- Monitoring Hardware
- Adding Disk Hardware
- Replacing Disks
- Replacement of I/O Cards
- Replacement of LAN Cards
- Monitoring RAC Instances
- A Blank Planning Worksheets
Maintenance and Troubleshooting
Replacing Disks
Chapter 394
1. Identify the physical volume name of the failed disk and the name of
the volume group in which it was configured. In the following
examples, the volume group name is shown as /dev/vg_sg01 and
the physical volume name is shown as /dev/c2t3d0. Substitute the
volume group and physical volume names that are correct for your
system.
2. Identify the names of any logical volumes that have extents defined
on the failed physical volume.
3. On the node on which the volume group is currently activated, use
the following command for each logical volume that has extents on the
failed physical volume:
# lvreduce -m 0 /dev/vg_sg01/lvolname /dev/dsk/c2t3d0
4. At this point, remove the failed disk and insert a new one. The new
disk will have the same HP-UX device name as the old one.
5. On the node from which you issued the lvreduce command, issue
the following command to restore the volume group configuration
data to the newly inserted disk:
# vgcfgrestore /dev/vg_sg01 /dev/dsk/c2t3d0
6. Issue the following command to extend the logical volume to the
newly inserted disk:
# lvextend -m 1 /dev/vg_sg01 /dev/dsk/c2t3d0
7. Finally, use the lvsync command for each logical volume that has
extents on the failed physical volume. This synchronizes the extents
of the new disk with the extents of the other mirror.
# lvsync /dev/vg_sg01/lvolname
Offline Replacement of a Mechanism in an HA
Enclosure Configured with Shared LVM (SLVM)
Hot plugging of disks is not supported for Oracle RAC data, which is
configured in volume groups with Shared LVM (SLVM). If you need this
capability, you should use disk arrays for your Oracle RAC data.
If you are using software mirroring for shared concurrent activation of
Oracle RAC data with MirrorDisk/UX and the mirrored disks are
mounted in a high availability disk enclosure, use the following steps to
carry out offline replacement: