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### SUNW.scalable_asm_diskgroup_proxy

### , scalable_asm_diskgroup_proxy

- resource type implementation for the clustered Oracle Automated Storage Management (Oracle ASM) disk group managed by Oracle Solaris Cluster

## Description

The `SUNW.scalable_asm_diskgroup_proxy` resource type represents the clustered Oracle ASM disk group in an Oracle Solaris Cluster configuration. This resource type is introduced for use starting with Oracle 11g release 2 configurations.

Note - The `SUNW.scalable_asm_diskgroup_proxy` resource type can only be used when using Oracle Grid Infrastructure for Clusters.

The `SUNW.scalable_asm_diskgroup_proxy` resource type is a multiple-master resource type. A single resource of this type can run on multiple nodes concurrently, but does not use network load balancing.

Each `SUNW.scalable_asm_diskgroup_proxy` resource represents a clustered Oracle ASM disk group. Each clustered Oracle ASM disk group is uniquely identified by the value of the `asm_diskgroups` extension property on the node where the instance is running. The Oracle ASM disk group resource should only be mounted if the Oracle ASM instance is available on the same cluster node. Additionally, Oracle ASM disk groups should only be mounted if any required storage resources are enabled on the cluster node. To ensure that these requirements are met, configure the Oracle ASM disk group resource as follows:

- Create a strong positive affinity between the Oracle ASM disk group resource group and the following resource groups:

  - The clustered Oracle ASM resource group

  - Any resource group that contains storage resources for Oracle files

- Create an offline-restart dependency between the clustered Oracle ASM disk group resource and the following resources:

  - The clustered Oracle ASM instance resource

  - Any storage resources for Oracle files that you are using

Create these dependencies and affinities when you configure clustered Oracle ASM disk group resources for the Oracle Solaris Cluster HA for Oracle data service or the Oracle Solaris Cluster Support for Oracle RAC data service.

To register this resource type and create instances of this resource type, use one of the following:

- The `clsetup`utility, specifying the option for configuring Oracle Solaris Cluster Support for Oracle Real Application Clusters

- The following sequence of Oracle Solaris Cluster maintenance commands:

  - To register this resource type, use the `clresourcetype`command.

  - To create instances of this resource type, use the `clresource`command.

### Standard Properties

For a description of all standard resource properties, see the `r_properties`(5) man page.

Standard resource properties are overridden for this resource type as follows:

`Prenet_start_timeout`
  Minimum

    60

  Default

    300

`Prenet_stop_timeout`
  Minimum

    60

  Default

    300

### Extension Properties

The extension properties of the `SUNW.scalable_asm_diskgroup_proxy` resource type are as follows.

`asm_diskgroups`

  This property specifies the single-instance Oracle ASM disk group. If required, more than one single-instance Oracle ASM disk group can be specified as a comma separated list.

  Data Type

    String array

  Range

    Not applicable

  Default

    No default defined

  Tunable

    When disabled

`debug_level`

  Note - All SQL*Plus and srvmgr messages that the Oracle ASM disk group resource issues are written to the log file `/var/opt/SUNWscor/oracle_asm/message_log.${RESOURCE}`.

  This property indicates the level to which debug messages for the Oracle ASM disk-group resources are logged. When the debug level is increased, more debug messages are written to the system log `/var/adm/messages` as follows:

  0

    No debug messages

  1

    Function Begin and End messages

  2

    All debug messages and function Begin/End messages

  You can specify a different value of the `debug_level` extension property for each node that can master the resource.

  Data Type

    Integer

  Range

    0–2

  Default

    0

  Tunable

    Any time

`proxy_probe_timeout`

  This property specifies the timeout value, in seconds, that the proxy monitor uses when checking the status of the clustered Oracle ASM disk group resource for which this resource is acting as a proxy.

  Data Type

    Integer

  Range

    5–120

  Default

    60

  Tunable

    Any time

`proxy_probe_interval`

  This property specifies the interval , in seconds, between probes of the clustered Oracle ASM disk group resource for which this resource is acting as a proxy.

  Data Type

    Integer

  Range

    5–120

  Default

    30

  Tunable

    Any time

## Examples

Example 1 Creating a `scalable_asm_diskgroup_proxy` Resource

This example shows the commands for performing the following operations to create a scalable multi-master `scalable_asm_diskgroup_proxy` resource on a two-node cluster:

1. Creating the `asm-dg-rg` resource group

2. Registering the `SUNW.scalable_asm_idiskgroup_proxy` resource type

3. Setting the resource group affinity

4. Adding the `asm-dg-rs` resource to the `asm-dg-rg` resource group

5. Setting the `asm_diskgroups` extension property for one Oracle ASM disk group

The example makes the following assumptions:

- The bash shell is used.

- A resource group that is named `asm-inst-rg` exists and contains a resource of type `SUNW.scalable_asm_instance_proxy` that is named `asm-inst-rs`.

- A resource group that is named `scal-mp-rg` exists and contains a resource of type `SUNW.ScalMountPoint` that is named `scal-mp-rs`, for Oracle files.

    phys-schost-1# clresourcetype register SUNW.scalable_asm_diskgroup_proxy
    phys-schost-1# clresourcegroup create -S asm-dg-rg
    phys-schost-1# clresourcgroup set -p rg_affinities=++asm-inst-rg asm-dg-rg
    phys-schost-1# clresource create -g asm-dg-rg \
    -t SUNW.scalable_asm_diskgroup_proxy \
    -p asm_diskgroups=data1 \\
    -p resource_dependencies_offline_restart=casm-inst-rs,qfs-mp-rs \\
    -d asm-dg-rs

    phys-schost-1# clresourcegroup online -M asm-dg-rg

    phys-schost-1# clresource enable asm-dg-rs

## Attributes

See `attributes`(5) for descriptions of the following attributes:

ATTRIBUTE TYPE | ATTRIBUTE VALUE
--- | ---
Availability | ha-cluster/data-service/oracle-database

## See Also

Oracle Solaris Cluster Data Service for Oracle Real Application Clusters Guide, Oracle Solaris Cluster Data Service for Oracle Guide, Oracle Solaris Cluster Data Services Planning and Administration Guide

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