Managing exports for DAFS service
About DAFS exports
A DAFS export is a uniquely named object associated with a filer path (export point). DAFS clients access filer volumes or qtrees through DAFS exports. The DAFS exports are visible to DAFS clients, allowing them either read-only or read-write access. Volumes and qtrees must be exported before they can be accessed.
Each DAFS export has an associated access control list (ACL) based on the DAFS client host. For more information about host access, see Managing client host access to DAFS exports.
About managing DAFS exports
To manage DAFS exports for the DAFS service, you use the dafs export command. The command syntax and functions are as follows:
- The dafs export create [-r] export_name path command creates a new DAFS export with the specified export_name and an associated filer path. The -r argument creates a read-only export. The default access is read-write.
- The dafs export destroy export_name command destroys the DAFS export with the specified export_name.
- The dafs export list [export_name] command lists the all the DAFS exports and their properties or one DAFS export specified with export_name.
- The dafs export modify -r|-w export_name command modifies the read-only and read-write attributes.
- The dafs export enable export_name command makes the DAFS export specified with export_name available after a previous dafs export disable command.
- The dafs export disable export_name command disables the DAFS export specified with export_name. A disabled export has configuration information preserved on the filer but is no longer available for DAFS clients to access. The dafs export enable command makes the named DAFS export available to DAFS clients.
- The dafs export all command reexports all named DAFS exports for the current host.
For more information, see the na_dafs_export(1) man page.
About naming DAFS exports
The dafs export create command enables you to specify a name for each exported path. When you create DAFS exports with this command, use unique prefixes for each export name.
If you create exports with matching prefixes, then you cannot delete a specific export. The dafs export destroy command deletes all exports with matching prefixes in their names. For example, if you create three exports named exp1, exp12, and exp13, then all the export names have an "exp1" prefix. If you use the dafs export destroy command to delete exp1, the command deletes all three exports.
Creating a DAFS export
To create and name a new DAFS export, complete the following step.
Step
|
Action
|
|---|
|
1 |
At the filer command line, enter the following command:
dafs export create [-r] export_name path
export_name is the DAFS export name.
path is the associated filer path.
-r creates a read-only export.
The default access is read-write.
Result
A new DAFS export is created.
Examples:
filer> dafs export create data1 /vol/vol3
filer>
In this example, the data1 export with the /vol/vol3 filer volume path is created.
filer> dafs export create data2 /vol/vol3/qtree2
filer>
In this example, the data2 export with the /vol/vol3/qtree2 filer qtree path is created.
|
Destroying a DAFS export
To destroy a named DAFS export, complete the following step.
Step
|
Action
|
|---|
|
1 |
At the filer command line, enter the following command:
dafs export destroy export_name
export_name is the DAFS export name.
Result
The named DAFS export is destroyed. Access by DAFS clients is removed when the next client access is attempted.
Example:
filer> dafs export destroy data1
filer>
In this example, the data1 export is destroyed.
|
Listing DAFS exports
To list the DAFS exports and their properties, complete the following step.
Step
|
Action
|
|---|
|
1 |
At the filer command line, enter the following command:
dafs export list [export_name]
export_name specifies a single DAFS export name; otherwise all DAFS exports are displayed.
Result
The display shows a list of DAFS exports.
Example:
filer> dafs export list
Name: data1
Export point: /vol/data1
Enabled: true
Read/Write Mode: read_write
Name: vol0
Export point: /vol/vol0
Enabled: true
Read/Write Mode: read_write
2 export(s) found
|
Modifying a DAFS export
To modify a DAFS export's read-only or read-write attributes, complete the following step.
Step
|
Action
|
|---|
|
1 |
At the filer command line, enter the following command:
dafs export modify -r|-w export_name
export_name is the DAFS export name.
-r marks the DAFS export as a read-only export.
-w marks the DAFS export as a read-write export.
Result
The named DAFS export's attributes are modified.
Example:
filer> dafs export modify -r data1
filer>
In this example, the data1 export is modified to be a read-only export.
|
Enabling a disabled DAFS export
To enable a previously disabled DAFS export, complete the following step.
Step
|
Action
|
|---|
|
1 |
At the filer command line, enter the following command:
dafs export enable export_name
export_name is the DAFS export name.
Result
The named DAFS export is enabled and is now available to be accessed by DAFS clients.
Example:
filer> dafs export enable data1
filer>
In this example, the data1 export is reenabled.
|
Disabling a DAFS export
To disable a DAFS export, complete the following step.
Step
|
Action
|
|---|
|
1 |
At the filer command line, enter the following command:
dafs export disable export_name
export_name is the DAFS export name.
Result
The named DAFS export is disabled and can no longer be accessed by DAFS clients. The configuration information for the disabled export is preserved on the filer. This is useful when you perform maintenance on your filer.
Example:
filer> dafs export disable data1
filer>
In this example, the data1 export is disabled.
|
Reexporting all DAFS exports
To reexport all the DAFS exports, complete the following step.
Step
|
Action
|
|---|
|
1 |
At the filer command line, enter the following command:
dafs export all
Result
All DAFS exports are reexported for the current host.
Example:
filer> dafs export all
filer>
|
Copyright © 1994-2003, Network Appliance, Inc. All rights
reserved.
Part No. 210-00323
File: dafs8.htm
Last updated: 01/15/03 15:46:01