How /etc/exports works

Specifying access restrictions in /etc/exports

Specifying the same restrictions for all hosts

For all hosts to mount read-write

To enable all hosts to mount the resource read-write, complete the following step.

Step	Action
1	Enter the path name of the resource without any options. Example /vol/vol0/home Result All hosts can mount the /vol/vol0/home directory as read-write.

For all hosts to mount a resource read-only

To enable all hosts to mount the resource read-only, complete the following step.

Step	Action
1	Enter the path name of the resource with the `ro` option. Example /vol/vol0/home -ro Result All hosts can mount the /vol/vol0/home directory as read-only.

Specifying different restrictions for different hosts

For some hosts to mount read-write

To have some hosts mount the resource read-write and other hosts be unable to mount the resource, complete the following step.

Step	Action
1	Enter the path name of the resource with the `access` option. Example /vol/vol0/home -access=host1:host2 Result Host1 and host2 can mount the /vol/vol0/home directory as read-write. Other hosts cannot mount the /vol/vol0/home directory.

For some hosts to mount read-only

To have some hosts mount the resource read-only and other hosts be unable to mount the resource, complete the following step.

Step	Action
1	Enter the path name of the resource with the `access` and `ro` options. Example /vol/vol0/home -access=host1:host2,ro Result Host1 and host2 can mount the /vol/vol0/home directory as read-only. Other hosts cannot mount the /vol/vol0/home directory.

For some hosts to mount read-write and all others to mount read-only

To enable some hosts to mount a resource read-write and all other hosts to mount the resource read-only, complete the following step.

Step	Action
1	Enter the path name of the resource with the `access` and `rw` options. Example /vol/vol0/home -rw=host1:host2 Result Host1 and host2 can mount the /vol/vol0/home directory as read-write. All other hosts can mount the /vol/vol0/home directory as read-only.

For some hosts to mount read-write and some hosts to mount read-only

To have some hosts mount a resource read-write and some hosts mount the resource read-only, complete the following step.

Step	Action
1	Enter the path name of the resource with the `access` and `rw` options. The hosts with the `rw` option must be a subset of the hosts specified with the `access` option. Hosts specified after the `access` option but not after the `rw` option can mount the resource read-only. Example /vol/vol0/home -access=host1:host2,rw=host1 Result Host1 can mount the /vol/vol0/home directory as read-write. Host2 can mount the /vol/vol0/home directory as read-only. Hosts other than host1 and host2 cannot mount the /vol/vol0/home directory.

Step

Action

Enter the path name of the resource with the access and rw options.

The hosts with the rw option must be a subset of the hosts specified with the access option. Hosts specified after the access option but not after the rw option can mount the resource read-only.

Example

/vol/vol0/home -access=host1:host2,rw=host1

Result

Host1 can mount the /vol/vol0/home directory as read-write. Host2 can mount the /vol/vol0/home directory as read-only. Hosts other than host1 and host2 cannot mount the /vol/vol0/home directory.