How to fix this?

File “/usr/local/lib/python3.9/concurrent/futures/”, line 246, in _process_worker
r = call_item.fn(*call_item.args, **call_item.kwargs)
File “/usr/local/lib/python3.9/site-packages/middlewared/”, line 111, in main_worker
res = MIDDLEWARE._run(*call_args)
File “/usr/local/lib/python3.9/site-packages/middlewared/”, line 45, in _run
return self._call(name, serviceobj, methodobj, args, job=job)
File “/usr/local/lib/python3.9/site-packages/middlewared/”, line 39, in _call
return methodobj(*params)
File “/usr/local/lib/python3.9/site-packages/middlewared/”, line 39, in _call
return methodobj(*params)
File “/usr/local/lib/python3.9/site-packages/middlewared/”, line 985, in nf
return f(*args, **kwargs)
File “/usr/local/lib/python3.9/site-packages/middlewared/plugins/”, line 352, in import_pool
File “libzfs.pyx”, line 402, in libzfs.ZFS.exit
File “/usr/local/lib/python3.9/site-packages/middlewared/plugins/”, line 346, in import_pool
zfs.import_pool(found, new_name or, options, any_host=any_host)
File “libzfs.pyx”, line 1175, in libzfs.ZFS.import_pool
File “libzfs.pyx”, line 1203, in libzfs.ZFS.__import_pool
libzfs.ZFSException: I/O error

Hold your nose and spin three times while balancing on one foot. :dancer:

That usually solves it for me 9 times out of 10.


…and if that doesn’t solve your problem, try explaining what your problem is–what exactly is it you’re trying to do? And then some information about your system would be helpful–which version of TrueNAS are you running, what hardware, etc.?