Script to activate and deactivate a Pool

TrueNAS General
1

I have a Pool that I would like to activate and deactivate with a script.
At a certain time a script puts the pool online.
At another time a second script takes the pool offline.

What commands should these scripts run?

2

The only necessary commands would be zpool export $POOLNAME to take it offline, and zpool import $POOLNAME to bring it online. But this sounds like a very unusual request–what are you hoping to accomplish with this?

3

Mine is a need for security; I don’t want it to always be visible to the system, but only when I need it.
Is there another way to do this?

The sudo zpool export Test-Pool command did not give errors, but in the dashboard and in Storage the pool is always visible; in Datasets however it is not seen.

With the zpool import Test-Pool command I got:

cannot mount ‘/Offline-Pool’: failed to create mountpoint: Read-only file system
Import was successful, but unable to mount some datasets%

Then just select it with the mouse and I get the error:

CallError
[ENOENT] Path /Offline-Pool not found

 Error: Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/middlewared/main.py", line 198, in call_method
    result = await self.middleware.call_with_audit(message['method'], serviceobj, methodobj, params, self)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/main.py", line 1466, in call_with_audit
    result = await self._call(method, serviceobj, methodobj, params, app=app,
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/main.py", line 1428, in _call
    return await self.run_in_executor(prepared_call.executor, methodobj, *prepared_call.args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/main.py", line 1321, in run_in_executor
    return await loop.run_in_executor(pool, functools.partial(method, *args, **kwargs))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/schema/processor.py", line 191, in nf
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/schema/processor.py", line 53, in nf
    res = f(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/plugins/filesystem.py", line 422, in stat
    raise CallError(f'Path {_path} not found', errno.ENOENT)
middlewared.service_exception.CallError: [ENOENT] Path /Test-Pool not found

Even restarting TrueNAS I still get this error.
It is fair to point out that I currently have no datasets created on this pool.

4

You need to mount the pool to the correct path. If you’re writing scripts for this it’s probably better to use our APIs.

5

I just have to deactivate and activate it (or anything else that takes it offline).
I don’t know how to use the API.

I saw that if I export the pool and then reboot, the pool is online again.
This might be enough; when I need it I reboot and then, when I no longer need it, take it offline again.
But it would be better to use a command with a script because I can’t know if when I reboot someone is using another pool.

6

By doing this I always cause problems.
In the end I had to restore the starting situation.
My need remains, but I’ll open a separate topic.
Thanks to everyone anyway.

7

See this post, you need to specify the path: