SUNW.nfs(5)

NAME | Description | Files | Examples | Attributes | See Also | Notes

NAME

SUNW.nfs, nfs – resource type implementation for Sun Cluster HA for NFS

Description

The nfs resource type implementation operates on a set of share commands stored in a “per-resource” file. The format of this file is exactly the same as that described in the dfstab(4) man page. This file's location is relative to the Pathprefix property of the containing resource group. This file must reside as SUNW.nfs/dfstab.resource-name under the Pathprefix directory that contains the resource group.

Standard Properties

See r_properties(5) for a complete description of the following resource properties.

Cheap_probe_interval

Default

20

Tunable

Any time

Network_resources_used (string array)

A list of logical-hostname or shared-address network resources upon which this resource has a dependency. This list contains all network-address resources that appear in the properties Resource_dependencies, Resource_dependencies_weak, Resource_dependencies_restart, or Resource_dependencies_offline_restart.

This property is updated automatically by the RGM, based on the setting of the resource-dependencies properties. You do not set this property directly. Instead, use the Resource_dependencies property.

Category

Conditional/Optional

Default

The empty list

Tunable

Any time

Resource_dependencies (string array)

Specifies a list of resources upon which a resource depends. This list includes any logical-hostname or shared-address network resources that are used by a resource. The default value for this property is null.

You can specify one or more resource names. Each network resource can contain one or more logical host names. See the clreslogicalhostname(1CL) and clressharedaddress(1CL) man pages for more information.

You can specify an alternate kind of dependency by using the Resource_dependencies_weak, Resource_dependencies_restart, or Resource_dependencies_offline_restart property instead of the Resource_dependencies property. For more information, see the r_properties(5) man page.

Category

Optional

Default

The empty list

Tunable

Any time

Thorough_probe_interval

Default

60

Tunable

Any time

Extension Properties

Lockd_nullrpc_timeout

Type integer. Default is 120. This propery indicates the time out value (in seconds) to use when probing lockd.

Monitor_retry_count

Type integer. Default is 4. This property controls the restarts of the fault monitor. It indicates the number of times that the fault monitor is restarted by the Process Monitor Facility (PMF) and corresponds to the -n option passed to the pmfadm(1M) command. The number of restarts is counted in a specified time window (see the property Monitor_retry_interval). Note that this property refers to the restarts of the fault monitor itself, not the NFS daemons.

Monitor_retry_interval

Type integer. Default is 2. This property indicates that the failures of the fault monitor are counted and corresponds to the -t option passed to thepmfadm(1M) command. If the number of times the fault monitor fails exceeds the extension property Monitor_retry_count, the fault monitor is not restarted by the Process Monitor Facility.

Mountd_nullrpc_restart

Type Boolean. Default is TRUE. Indicates if mountd should be restarted when a null rpc call fails.

Mountd_nullrpc_timeout

Type integer; defaults to 120. This property indicates the time out value (in seconds) to use when probing mountd.

Nfsd_nullrpc_restart

Type Boolean. Default is FALSE. This property indicates if nfsd should be restarted when a null rpc call fails.

Nfsd_nullrpc_timeout

Type integer. Default is 120. This property indicates the time out value (in seconds) to use when probing nfsd.

Rpcbind_nullrpc_reboot

Type Boolean. Default is TRUE. Indicates if the system is to be rebooted when a null rpc call on rpcbind fails.

Rpcbind_nullrpc_timeout

Type integer. Default is 120. This property indicates the time out value (in seconds) to use when probing rpcbind.

Statd_nullrpc_timeout

Type integer. Defaults to 120. This property indicates the time out value (in seconds) to use when probing statd.

Files

dfstab.resource-name

The file is in dfstab format, which contains the list of share commands to be managed by the resource. This file must reside in the SUNW.nfs subdirectory under the Pathprefix directory of the containing resource group.

/tmp/.hanfs/*

Critical state files used by the implementation.

Examples

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Example 1 Instantiating a Failover NFS Resource




For this example to work, the data service must first be installed. This example instantiates a failover NFS resource named hanfs-rs in a resource group named hanfs-rg. The hanfs-rg resource group is assumed to contain at least one logical hostname resource, which identifies the logical hostnames associated with the resource group.

example# clresourcetype register SUNW.nfs example# clresource create -g hanfs-rg -t SUNW.nfs hanfs-rs

The resource group hanfs-rg must contain a valid path name as its Pathprefix property. A file named dfstab.hanfs-rs must reside in the subdirectory SUNW.nfs under the Pathprefix directory.

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Example 2 Instantiating a Failover NFS Resource




For this example to work, the data service must first be installed. This example instantiates a failover NFS resource named sap-nfs in a resource group named sap-rg. The system-defined property Thorough_probe_interval is set to 30 for this resource. The Network_resources_used property is set to a logical hostname relo-sap, which must reside in the same resource group, sap-rg.

example# clresourcetype register SUNW.nfs example# clresource create –g sap-rg –t SUNW.nfs \ -p Thorough_probe_interval=30 \ -p Network_resources_used=relo-sap sap-nfs

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Attributes

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

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Availability	SUNWnfs

See Also

lockd(1M), mountd(1M), nfsd(1M), pmfadm(1M),rpcbind(1M), scha_resource_get(3HA), clresourcetype(1CL), clresourcegroup(1CL), share(1M), statd(1M), rpc(3NSL), dfstab(4), attributes(5), r_properties(5)

Sun Cluster Data Services for NFS Guide for Solaris OS, Sun Cluster Data Services Planning and Administration Guide for Solaris OS

Notes

The path names being shared by means of dfstab.resource-name must be unique across all resources, and they cannot be present in the system dfstab file on any cluster node.

The implementation supports customization of the /etc/init.d/nfs.server script to start the nfsd daemon with a customized set of options.

The SUNW.nfs subdirectory under the Pathprefix directory of the containing resource group is also used by statd to save its state.

Sun Cluster 3.2  Last Revised 11 Sep 2008

NAME | Description | Files | Examples | Attributes | See Also | Notes