Attempt to add third SSD to mirrored pool fails

22.02.2 PR: https://github.com/truenas/webui/pull/6693

Agree the error is clear when I try to REPLACE a pool's drive. However, when I tried to EXTEND the pool, the error I got (the initial report) doesn't mention "device is too small".

Otherwise, yes, REPLACE error is correct: the drive is too small. They are all labeled 1TB drives, but the replacement is about 20GB smaller than the existing drives (mumble grumble)

The error seems to be clear, despite too verbose: [EZFS_BADDEV] device is too small

Are you positive is the same size or bigger than the other ones?

Received a similar error when I tried to replace.  Although the drives all say they're 1TB, I wonder if they really are?

Error: concurrent.futures.process._RemoteTraceback:
"""
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/middlewared/plugins/zfs.py", line 299, in replace
target.replace(newvdev)
File "libzfs.pyx", line 404, in libzfs.ZFS._exit_
File "/usr/lib/python3/dist-packages/middlewared/plugins/zfs.py", line 299, in replace
target.replace(newvdev)
File "libzfs.pyx", line 2070, in libzfs.ZFSVdev.replace
libzfs.ZFSException: device is too small

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/lib/python3.9/concurrent/futures/process.py", line 243, in _process_worker
r = call_item.fn(*call_item.args, **call_item.kwargs)
File "/usr/lib/python3/dist-packages/middlewared/worker.py", line 97, in main_worker
res = MIDDLEWARE._run(*call_args)
File "/usr/lib/python3/dist-packages/middlewared/worker.py", line 45, in _run
return self._call(name, serviceobj, methodobj, args, job=job)
File "/usr/lib/python3/dist-packages/middlewared/worker.py", line 39, in _call
return methodobj(*params)
File "/usr/lib/python3/dist-packages/middlewared/worker.py", line 39, in _call
return methodobj(*params)
File "/usr/lib/python3/dist-packages/middlewared/schema.py", line 1186, in nf
return func(*args, **kwargs)
File "/usr/lib/python3/dist-packages/middlewared/plugins/zfs.py", line 301, in replace
raise CallError(str(e), e.code)
middlewared.service_exception.CallError: [EZFS_BADDEV] device is too small
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/middlewared/job.py", line 382, in run
await self.future
File "/usr/lib/python3/dist-packages/middlewared/job.py", line 418, in __run_body
rv = await self.method(*([self] + args))
File "/usr/lib/python3/dist-packages/middlewared/schema.py", line 1182, in nf
return await func(*args, **kwargs)
File "/usr/lib/python3/dist-packages/middlewared/schema.py", line 1092, in nf
res = await f(*args, **kwargs)
File "/usr/lib/python3/dist-packages/middlewared/plugins/pool_/replace_disk.py", line 137, in replace
raise e
File "/usr/lib/python3/dist-packages/middlewared/plugins/pool_/replace_disk.py", line 117, in replace
await self.middleware.call(
File "/usr/lib/python3/dist-packages/middlewared/main.py", line 1305, in call
return await self._call(
File "/usr/lib/python3/dist-packages/middlewared/main.py", line 1270, in _call
return await self._call_worker(name, *prepared_call.args)
File "/usr/lib/python3/dist-packages/middlewared/main.py", line 1276, in _call_worker
return await self.run_in_proc(main_worker, name, args, job)
File "/usr/lib/python3/dist-packages/middlewared/main.py", line 1203, in run_in_proc
return await self.run_in_executor(self.__procpool, method, *args, **kwargs)
File "/usr/lib/python3/dist-packages/middlewared/main.py", line 1177, in run_in_executor
return await loop.run_in_executor(pool, functools.partial(method, *args, **kwargs))
middlewared.service_exception.CallError: [EZFS_BADDEV] device is too small