SUNW.asm_diskgroup

, asm_diskgroup

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

Description

The SUNW.asm_diskgroup resource type represents the ASM disk group in an Oracle Solaris Cluster configuration.

Each SUNW.asm_diskgroup resource represents a ASM disk group. Each single instance ASM disk group is uniquely identified by the value of the asm_diskgroups extension property on the node where the instance is running.

The ASM disk group resource should only be mounted if the ASM instance is available on the same cluster node. Additionally, ASM disk groups should be mounted if any required storage resources are enabled on the cluster node. To ensure that these requirement are met, configure the ASM disk group resource as follows:

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

  • The single instance or clustered ASM resource group

  • Any resource group that contains storage resources for Oracle files

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

  • The single instance or clustered ASM instance resource

  • Any storage resources for Oracle files that you are using

Create these dependencies and affinities when you configure clustered ASM instance resources for the Oracle Solaris Cluster Support for Oracle data service or Oracle Solaris Cluster Support for Oracle RAC data service. For more information on configuring resources for Oracle database instances, see Oracle Solaris Cluster Data Service for Oracle Guide or Oracle Solaris Cluster Data Service for Oracle Real Application Clusters Guide.

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

• Oracle Solaris Cluster Manager

• The clsetup(1CL) 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(1CL) command.

  • To create instances of this resource type, use the clresource(1CL) 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:

Failover_mode

Default

SOFT

Tunable

Any time

Load_balancing_policy

Default

LB_WEIGHTED

Tunable

At creation

Load_balancing_weights

Default

””

Tunable

Any time

Monitor_check_timeout

Minimum

60

Default

300

Monitor_start_timeout

Minimum

60

Default

300

Monitor_stop_timeout

Minimum

60

Default

300

Network_resources_used

Default

””

Default

Any time

Port_list

Default

””

Tunable

Anytime

Retry_count

Maximum

10

Default

2

Tunable

Anytime

Retry_Interval

Maximum

3600

Default

370

Tunable

Anytime

Scalable

Default

FALSE

Tunable

At creation

Start_timeout

Minimum

60

Default

300

Stop_timeout

Minimum

60

Default

300

Through_probe_interval

Minimum

3600

Default

60

Tunable

ANYTIME

Update_timeout

Minimum

60

Default

300

Validate_timeout

Minimum

60

Default

300

Extension Properties

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

asm_diskgroups

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

Data Type

String array

Range

Not applicable

Default

“”

Tunable

When disabled

Child_mon_level(integer)

Provides control over the processes that are monitored through the Process Monitor Facility (PMF). This property denotes the level to which the forked child processes are monitored. Omitting this property or setting this property to the default value is the same as omitting the -Coption for pmfadm(1M). All child processes and their descendents are monitored.

Category

Optional

Default

-1

Tunable

When disabled

debug_level

---

Note - All SQL*Plus and srvmgr messages that the 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

Failover_Enabled(boolean)

Allows the resources to fail over. If this property is set to False, failover of the resource is disabled. You can use this property to prevent the application resource from initiating a failover of the resource group.

---

Note - Use the Failover_mode property instead of the Failover_enabled extension property because Failover_mode better controls failover behavior. For more information, see the descriptions of the LOG_ONLY and RESTART_ONLY values for Failover_mode in r_properties(5).

---

Category

Optional

Default

True

Tunable

When disabled

Log_level

Specifies the level, or type, of diagnostic messages that are logged by GDS. You can specify None, Info, or Err for this property. When you specify None, diagnostic messages are not logged by GDS. When you specify Info, both information and error messages are logged. When you specify Err, only error messages are logged.

Category

Optional

Default

Info

Tunable

Any time

Network_aware(boolean)

This property specifies whether an application uses the network.

Category

Optional

Default

False

Tunable

At creation

Monitor_retry_count

This property specifies the number of PMF restart allowed for the fault monitor.

Default

4

Tunable

Any time

Monitor_retry_interval

This property specifies the number of PMF restart allowed for the fault monitor.

Default

2

Tunable

Any time

probe_command(string)

Specifies the command that periodically checks the health of the single instance ASM.

Category

Required

Default

"/opt/SUNWscor/oracle_asm/bin/asm_control probe -R %RS_NAME -G %RG_NAME -T %RT_NAME"

Tunable

None

Probe_timeout(integer)

This property specifies the timeout value, in seconds, for the probe command.

Category

Optional

Default

30 seconds

Tunable

Any time

Start_command(string)

Specifies the command that mounts the ASM diskgroup.

Category

Required

Default

"/opt/SUNWscor/oracle_asm/bin/asm_control start -R %RS_NAME -G %RG_NAME -T %RT_NAME"

Tunable

None

Stop_command(string)

Specifies the command that dismounts the ASM diskgroup.

Category

Required

Default

"/opt/SUNWscor/oracle_asm/bin/asm_control stop -R %RS_NAME -G %RG_NAME -T %RT_NAME"

Tunable

None

Stop_signal(integer)

Specifies the command that send stop signal to the ASM diskgroup.

Category

Optional

Default

15

Tunable

When disabled

Validate_command(string)

Specifies the absolute path to the command that validates the application, although currently not used.

Category

Optional

Default

NULL

Tunable

When disabled

Examples

Example 1 Creating a Failover asm_diskgroup Resource

This example shows the commands for performing the following operations to create a failover asm_diskgroup resource on a two-node cluster:

1. Creating the asm-dg-rg resource group

2. Registering the SUNW.asm_diskgroup 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

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 that is named asm-inst-rs.

phys-schost-1# clresourcetype register SUNW.asm_diskgroup
phys-schost-1# clresourcegroup create 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.asm_diskgroup \
-p asm_diskgroups=dg1 \
-p resource_dependencies_offline_restart=asm-instance-rs \
-d asm-dd-rs
phys-schost-1# clresourcegroup online -M asm-dg-rg
phys-schost-1# clresource enable asm-dg-rs

Example 2 Creating a Scalable asm_diskgroup Resource

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

1. Creating the asm-dg-rg resource group

2. Registering the SUNW.asm_diskgroup 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 two ASM disk groups

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 qfs-mp-rs.

phys-schost-1# clresourcetype register SUNW.asm_diskgroup
phys-schost-1# clresourcegroup create -g 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.asm_diskgroup \
-p asm_diskgroups=dg1,dg2 \
-p resource_dependencies_offline_restart=asm-instance-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

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