Unable to delete Dataset on 25.04.1

Omid · June 17, 2025, 12:50pm

I have migrated from Core to Community Edition and am unable to delete a dataset in the web GUI, even for newly created datasets.

I’m logged in as root user (migrated from core) and receiving [Errno 13] Permission denied: '/proc/9861/fd/10' error below:

Details:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/middlewared/api/base/server/ws_handler/rpc.py", line 323, in process_method_call
    result = await method.call(app, params)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/api/base/server/method.py", line 40, 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 906, in call_with_audit
    result = await self._call(method, serviceobj, methodobj, params, app=app,
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/main.py", line 715, in _call
    return await methodobj(*prepared_call.args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/schema/processor.py", line 174, in nf
    return await func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/schema/processor.py", line 48, in nf
    res = await f(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/plugins/pool_/dataset_processes.py", line 50, in processes
    return await self.middleware.call('pool.dataset.processes_using_paths', paths)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/main.py", line 1000, in call
    return await self._call(
           ^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/middlewared/main.py", line 726, 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 619, 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/plugins/pool_/dataset_processes.py", line 173, in processes_using_paths
    (include_devs and os.stat(fd).st_dev in include_devs) or
                      ^^^^^^^^^^^
PermissionError: [Errno 13] Permission denied: '/proc/9861/fd/10'

Here is the output of zfs list -r -o name,exec boot-pool:

NAME                                                        EXEC
boot-pool                                                   on
boot-pool/.system                                           on
boot-pool/.system/configs-a2e19c264e06446d8804a27c3d55486f  on
boot-pool/.system/cores                                     on
boot-pool/.system/rrd-a2e19c264e06446d8804a27c3d55486f      on
boot-pool/.system/samba4                                    on
boot-pool/.system/services                                  on
boot-pool/.system/syslog-a2e19c264e06446d8804a27c3d55486f   on
boot-pool/.system/webui                                     on
boot-pool/ROOT                                              on
boot-pool/ROOT/24.04.2.5                                    on
boot-pool/ROOT/24.04.2.5/audit                              off
boot-pool/ROOT/24.04.2.5/conf                               off
boot-pool/ROOT/24.04.2.5/data                               off
boot-pool/ROOT/24.04.2.5/etc                                off
boot-pool/ROOT/24.04.2.5/home                               off
boot-pool/ROOT/24.04.2.5/mnt                                off
boot-pool/ROOT/24.04.2.5/opt                                on
boot-pool/ROOT/24.04.2.5/root                               on
boot-pool/ROOT/24.04.2.5/usr                                on
boot-pool/ROOT/24.04.2.5/var                                on
boot-pool/ROOT/24.04.2.5/var/ca-certificates                off
boot-pool/ROOT/24.04.2.5/var/log                            off
boot-pool/ROOT/24.10.2.2                                    on
boot-pool/ROOT/24.10.2.2/audit                              off
boot-pool/ROOT/24.10.2.2/conf                               off
boot-pool/ROOT/24.10.2.2/data                               off
boot-pool/ROOT/24.10.2.2/etc                                on
boot-pool/ROOT/24.10.2.2/home                               off
boot-pool/ROOT/24.10.2.2/mnt                                off
boot-pool/ROOT/24.10.2.2/opt                                on
boot-pool/ROOT/24.10.2.2/root                               on
boot-pool/ROOT/24.10.2.2/usr                                on
boot-pool/ROOT/24.10.2.2/var                                on
boot-pool/ROOT/24.10.2.2/var/ca-certificates                off
boot-pool/ROOT/24.10.2.2/var/log                            off
boot-pool/ROOT/24.10.2.2/var/log/journal                    off
boot-pool/ROOT/25.04.1                                      on
boot-pool/ROOT/25.04.1/audit                                off
boot-pool/ROOT/25.04.1/conf                                 off
boot-pool/ROOT/25.04.1/data                                 off
boot-pool/ROOT/25.04.1/etc                                  on
boot-pool/ROOT/25.04.1/home                                 off
boot-pool/ROOT/25.04.1/mnt                                  off
boot-pool/ROOT/25.04.1/opt                                  on
boot-pool/ROOT/25.04.1/root                                 on
boot-pool/ROOT/25.04.1/usr                                  on
boot-pool/ROOT/25.04.1/var                                  on
boot-pool/ROOT/25.04.1/var/ca-certificates                  off
boot-pool/ROOT/25.04.1/var/lib                              on
boot-pool/ROOT/25.04.1/var/lib/incus                        on
boot-pool/ROOT/25.04.1/var/log                              off
boot-pool/ROOT/25.04.1/var/log/journal                      off
boot-pool/ROOT/Initial-Install                              on
boot-pool/ROOT/default                                      on
boot-pool/grub                                              on

And here is the output for zfs list -r -o name,exec Storage/.system :

NAME                                                      EXEC
Storage/.system                                           on
Storage/.system/configs-a421eaccddb44c098d96b72146b5211d  on
Storage/.system/configs-ae32c386e13840b2bf9c0083275e7941  on
Storage/.system/configs-cadb1ce96f8c4a01a65be3ef8f5cb996  on
Storage/.system/cores                                     on
Storage/.system/netdata-a421eaccddb44c098d96b72146b5211d  on
Storage/.system/netdata-ae32c386e13840b2bf9c0083275e7941  on
Storage/.system/nfs                                       on
Storage/.system/rrd-a421eaccddb44c098d96b72146b5211d      on
Storage/.system/rrd-cadb1ce96f8c4a01a65be3ef8f5cb996      on
Storage/.system/samba4                                    on
Storage/.system/services                                  on
Storage/.system/syslog-a421eaccddb44c098d96b72146b5211d   on
Storage/.system/syslog-cadb1ce96f8c4a01a65be3ef8f5cb996   on
Storage/.system/webui                                     on

This is the permission of the root Dataset:

I know I can still use ZFS Destroy to delete a dataset, but I wonder why it no longer works on the Web interface.

winnielinnie · June 17, 2025, 1:35pm

What user are you logging in as in the web UI?

Why are you showing us properties of your boot-pool datasets and System Dataset children?

Folder permissions have nothin to do with destroying ZFS datasets.

Omid · June 17, 2025, 2:02pm

This was already posted in the second paragraph of the initial post. The user is root.

Because it’s been requested for the same [Errno 13] Permission denied (although on a different operation) by you on here Here

If it’s not needed for diagnosis, ignore.

winnielinnie · June 17, 2025, 2:14pm

Correct. That was a different issue unrelated to deleting datasets in the GUI.

Which dataset were you trying to delete?

Perhaps a non-root admin user needs to be created in order to delete storage datasets with the GUI? It gets nebulous with SCALE/CE.

Omid · June 18, 2025, 8:23am

Any dataset, any old one or if I create a new one with any permission, then I can’t remove it with the GUI and have to do ZFS Destroy -r /Storage/test-dataset

Yes, I’m considering it, but I have some issues with it. With a GUI, it creates the user and expects me to put the admin home directory under my dataset instead of /home, which I prefer not to do. If I do it manually, then there are some quirks with adding an authorised SSH key from the GUI. That’s a different issue I’m considering to find the best solution for. The correct approach would have been to have a feature in place during the TrueNAS Core upgrade process that automatically creates a ready-to-use truenas_admin account for users, allowing them to disable root login and use that account instead.

I might start by creating a config backup file, reinstalling, and then restoring the backup, and going from there. It’s just weird that it started happening a few days after the update, not straight away.

Omid · June 18, 2025, 9:22am

(post deleted by author)