Exporting or unexporting resources using the exportfs command

Purposes of the exportfs command

You use the exportfs command for these purposes:

Export entries specified in the /etc/exports file.
Export entries in different ways from those specified in the /etc/exports file. For example, you can export resources that are not specified in the /etc/exports file or resources that are specified in the /etc/exports file but with different access restrictions.
Unexport entries that are currently exported. After a resource is unexported, it becomes unavailable for clients to mount.

Rules for specifying multiple access restriction options

In the exportfs command, the first access restriction option is preceded by -o and a space. Subsequent options are preceded by a comma (,).

Example

exportfs -o access=host1:host2,root=host1,rw=host2 
/vol/vol0

Targets to which you export a resource

You can specify in the exportfs command to export a resource to these targets:

Hosts.
Netgroups. See Exporting resources to netgroups from /etc/exports for information about how to define a netgroup.
Subnets. See Exporting resources to subnets from /etc/exports for information about the format of a subnet address.

Exporting entries in /etc/exports

To export entries in the /etc/exports file, complete the following steps.

Step	Action
1	If...	Then...
	You want to export all entries in the /etc/exports file	Go to Step 2.
	You edited an entry in the /etc/exports file and you want the change to take effect	Go to Step 3.
2	Enter the following command: exportfs -a
3	Enter the following command: exportfs path_name path_name is the path name to a resource specified in the /etc/exports file.

Note
Network Appliance recommends that you confirm that the exports shown in the output of the exportfs command match the exports specified in /etc/exports. If they do not match, a client might get stale file handles after you reboot the filer.

Exporting entries differently than specified in /etc/exports

To export entries not in the /etc/exports file or to export entries with access restrictions that are different from those specified in the /etc/exports file, complete the following step.

Step	Action
1	Enter the following command: exportfs [ -i ] [ -o options ] path_name Omit the `-i` option if you are exporting a resource not included in the /etc/exports file. Use the `-i` option if the resource is included in the /etc/exports file but you want to export it differently. options specify the access restrictions. They can be `access`, `ro`, `rw`, and `anon`. path_name is the path name to the resource you want to export. Examples The following `exportfs` command exports the /vol/vol1 volume to a netgroup named trusted_hosts, giving host1 root access and host2 read-write nonroot access: exportfs -i -o access=trusted_hosts,root=host1,rw=host2 /vol/vol1 The following `exportfs` command exports the /vol/vol2 volume as a read-only volume to a netgroup named untrusted_hosts: exportfs -i -o access=untrusted_hosts,ro /vol/vol2

Step

Action

Enter the following command:

exportfs [ -i ] [ -o options ] path_name

Omit the -i option if you are exporting a resource not included in the /etc/exports file. Use the -i option if the resource is included in the /etc/exports file but you want to export it differently.

options specify the access restrictions. They can be access, ro, rw, and anon.

path_name is the path name to the resource you want to export.

Examples

The following exportfs command exports the /vol/vol1 volume to a netgroup named trusted_hosts, giving host1 root access and host2 read-write nonroot access:

exportfs -i -o access=trusted_hosts,root=host1,rw=host2 
/vol/vol1

The following exportfs command exports the /vol/vol2 volume as a read-only volume to a netgroup named untrusted_hosts:

exportfs -i -o access=untrusted_hosts,ro /vol/vol2

Unexporting resources

To unexport resources, complete the following steps.

Step	Action
1	If...	Then...
	You want to unexport all resources that are currently exported	Go to Step 2.
	You want to unexport a specific resource that is currently exported	Go to Step 3.
2	Enter the following command: exportfs -au
3	Enter the following command: exportfs -u path_name path_name is the path name to the resource that you want to unexport.