How to Install and Configure the Sun QFS Shared File System (Sun Cluster Data Service for Oracle RAC Guide for Solaris OS)

Sun Cluster Data Service for Oracle RAC Guide for Solaris OS

How to Install and Configure the Sun QFS Shared File System

Before You Begin

You might use Solaris Volume Manager metadevices as devices for the shared file systems. In this situation, ensure that the metaset and its metadevices are created and available on all nodes before configuring the shared file systems.

Ensure that the Sun QFS software is installed on all nodes of the global cluster where Sun Cluster Support for Oracle RAC is to run.

For information about how to install Sun QFS, see Using SAM-QFS With Sun Cluster.

Ensure that each Sun QFS shared file system is correctly created for use with Sun Cluster Support for Oracle RAC.

For information about how to create a Sun QFS file system, see Using SAM-QFS With Sun Cluster.

For each Sun QFS shared file system, set the correct mount options for the types of Oracle files that the file system is to store.
- For the file system that contains binary files, configuration files, alert files, and trace files, use the default mount options.
- For the file systems that contain data files, control files, online redo log files, and archived redo log files, set the mount options as follows:
  - In the /etc/vfstab file set the shared option.
  - In the /etc/opt/SUNWsamfs/samfs.cmd file or the /etc/vfstab file, set the following options:
```
fs=fs-name
stripe=width
mh_write
qwrite
forcedirectio
rdlease=300 Set this value for optimum performance.
wrlease=300 Set this value for optimum performance.
aplease=300 Set this value for optimum performance.
```
    fs-name
    
    Specifies the name that uniquely identifies the file system.
    
    width
    
    Specifies the required stripe width for devices in the file system. The required stripe width is a multiple of the file system's disk allocation unit (DAU). width must be an integer that is greater than or equal to 1.
  Note –
  Ensure that settings in the /etc/vfstab file do not conflict with settings in the /etc/opt/SUNWsamfs/samfs.cmd file. Settings in the /etc/vfstab file override settings in the /etc/opt/SUNWsamfs/samfs.cmd file.

Mount each Sun QFS shared file system that you are using for Oracle files.
# mount mount-point
mount-point

Specifies the mount point of the file system that you are mounting.

If you are using a zone cluster, configure the Sun QFS shared file system into the zone cluster. Otherwise, go to Step 5.

For information about configuring Sun QFS shared file system into a zone cluster, see How to Add a QFS Shared File System to a Zone Cluster in Sun Cluster Software Installation Guide for Solaris OS.

Change the ownership of each file system that you are using for Oracle files.

Note –
If you have configured Sun QFS shared file system for a zone cluster, perform this step in that zone cluster.

Change the file-system ownership as follows:
- Owner: the database administrator (DBA) user
- Group: the DBA group
The DBA user and the DBA group are created as explained in How to Create the DBA Group and the DBA User Accounts.
# chown user-name:group-name mount-point
user-name

Specifies the user name of the DBA user. This user is normally named oracle.

group-name

Specifies the name of the DBA group. This group is normally named dba.

mount-point

Specifies the mount point of the file system whose ownership you are changing.

Grant to the owner of each file system whose ownership you changed in Step 5 read access and write access to the file system.

Note –
When Sun QFS shared file system is configured for a zone cluster, you need to perform this step in that zone cluster.
# chmod u+rw mount-point
mount-point

Specifies the mount point of the file system to whose owner you are granting read access and write access.

Next Steps

Ensure that all other storage management schemes that you are using for Oracle files are installed.

After all storage management schemes that you are using for Oracle files are installed, go to Registering and Configuring the RAC Framework Resource Group.