Inzwischen habe ich die Platte via esata angeschlossen und importiert:
root@truenas[/var/log]# sudo zpool import
pool: Backup
id: 9352009934464260069
state: ONLINE
status: The pool was last accessed by another system.
action: The pool can be imported using its name or numeric identifier and
the '-f' flag.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-EY
config:
Backup ONLINE
4f1be623-5dbc-11ec-b51d-38eaa7a49f64 ONLINE
root@truenas[/var/log]# sudo zpool import Backup
cannot import 'Backup': pool was previously in use from another system.
Last accessed by truenas (hostid=7fa99fb4) at Sun Oct 19 01:29:11 2025
The pool can be imported, use 'zpool import -f' to import the pool.
root@truenas[/var/log]# sudo zpool import -f Backup
cannot mount '/Backup': failed to create mountpoint: Read-only file system
Import was successful, but unable to mount some datasets
root@truenas[/var/log]# zfs get mountpoint Backup
NAME PROPERTY VALUE SOURCE
Backup mountpoint /Backup default
leider habe ich den Mountpoint nicht beachtet. Im Dateisystem war nichts sichtbar, nicht einmal “/Backup”.
truenas_admin@truenas[~]$ sudo zpool status
pool: Backup
state: ONLINE
status: Some supported and requested features are not enabled on the pool.
The pool can still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
the pool may no longer be accessible by software that does not support
the features. See zpool-features(7) for details.
scan: scrub repaired 0B in 01:29:08 with 0 errors on Sun Oct 19 01:29:10 2025
config:
NAME STATE READ WRITE CKSUM
Backup ONLINE 0 0 0
4f1be623-5dbc-11ec-b51d-38eaa7a49f64 ONLINE 0 0 0
errors: No known data errors
pool: ZFSVolume
state: ONLINE
status: Some supported and requested features are not enabled on the pool.
The pool can still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
the pool may no longer be accessible by software that does not support
the features. See zpool-features(7) for details.
scan: scrub repaired 0B in 00:23:11 with 0 errors on Sun Jan 4 00:23:13 2026
config:
NAME STATE READ WRITE CKSUM
ZFSVolume ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
ee46faa0-a4fd-11e6-b27e-38eaa7a49f64 ONLINE 0 0 0
366256e6-98e4-11e3-8f3f-38eaa7a49f64 ONLINE 0 0 0
mirror-1 ONLINE 0 0 0
372bae17-98e4-11e3-8f3f-38eaa7a49f64 ONLINE 0 0 0
1597cd55-971f-11ed-80fc-38eaa7a49f64 ONLINE 0 0 0
errors: No known data errors
pool: boot-pool
state: ONLINE
scan: scrub repaired 0B in 00:00:42 with 0 errors on Mon Jan 12 03:45:44 2026
config:
NAME STATE READ WRITE CKSUM
boot-pool ONLINE 0 0 0
sdb3 ONLINE 0 0 0
errors: No known data errors
Also noch mal exportiert und mit
truenas_admin@truenas[/]$ sudo zpool import -R /mnt Backup
eingebunden. Ergibt
truenas_admin@truenas[/mnt]$ ls -l
total 17
drwxrwxrwx 12 root root 14 Oct 5 11:27 Backup
drwxrwxrwx 10 root root 10 Jan 9 16:11 ZFSVolume
truenas_admin@truenas[/mnt]$ ls -l *
Backup:
total 22
drwxrwxr-x 3 root root 3 Jul 26 2024 Berg34
drwxr-xr-x 3 root root 3 Jan 12 2022 FF3AHP
drwxr-xr-x 3 root root 3 Mar 15 2022 InternePlatten
drwxr-xr-x 2 root root 3 Feb 21 2025 LenovoFF3A
-rw-r--r-- 1 4294967294 root 0 Dec 17 2021 Test.txt
-rw-rw-r-- 1 root root 33 Dec 19 2021 Test2.txt
drwxr-xr-x 3 root root 3 Jan 10 2022 cerberos
drwxr-xr-x 3 root root 3 Jan 11 2022 cerberos1
drwxrwx--x 2 xxxxxx xxxxxxxxx 3 Oct 5 12:04 xxxx
drwxr-xr-x 14 80 80 33 Aug 17 2015 owncloud
drwxrwx--x 5 xxxx xxxx 17 Oct 5 10:39 xxx
drwxrwx--x 2 kodi kodi 2 Oct 5 11:27 xxx
ZFSVolume:
total 84
drwxr-xr-x 16 root root 16 Dec 28 13:46 Jails
drwxrwx--- 12 root root 12 Apr 28 2020 SMBDataset
drwxrwx--- 3 root root 3 Jan 9 16:25 VMTest
drwxrwx--- 3 root root 3 Dec 28 15:55 xxxx
drwxrwx--- 5 80 80 7 Oct 30 2014 files
drwxr-xr-x 9 root root 12 Dec 28 13:46 iocage
drwx------ 4 root root 9 Jan 10 16:31 xxx
truenas_admin@truenas[/mnt]$
Die Daten sind erhalten 
in der Oberfläche leider unter Datasets folgender Fehler
Error Name: ENOENT
Error Code: 2
Reason: [ENOENT] Path /Backup not found
Error Class: CallError
Trace: Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/middlewared/api/base/server/ws_handler/rpc.py", line 360, in process_method_call
result = await method.call(app, id_, params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/middlewared/api/base/server/method.py", line 57, in call
result = await self.middleware.call_with_audit(self.name, self.serviceobj, methodobj, params, app,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/middlewared/main.py", line 954, in call_with_audit
result = await self._call(method, serviceobj, methodobj, params, app=app,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/middlewared/main.py", line 782, 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 665, 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/api/base/decorator.py", line 116, in wrapped
result = func(*args)
^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/middlewared/plugins/filesystem.py", line 467, in stat
raise CallError(f'Path {_path} not found', errno.ENOENT)
middlewared.service_exception.CallError: [ENOENT] Path /Backup not found
Ebenso fehlt der Pool in Storage Dashboard siehe Bilder
Wie bekomme ich einen manuell importierten zpool in der TrueNAS 25 GUI angezeigt?
Eventuell wäre das ein Weg?Import zpool
Für Hilfe wäre ich dankbar 