Installer tui crash on updating 21.01.2 to 21.04.2 on Ubuntu 20.04.2 / s390x

Bug #1931118 reported by Frank Heimes
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ubuntu on IBM z Systems
Canonical Foundations Team

Bug Description

While updating the Subiquity installer form 21.01.2 to 21.04.2 during a 20.04.2 LPAR/s390x installation I faced the following crash:

report saved to /var/crash/1623068068.856643915.ui.crash
Traceback (most recent call last):
  File "/snap/subiquity/2278/usr/bin/subiquity", line 33, in <module>
    sys.exit(load_entry_point('subiquity==0.0.5', 'console_scripts', 'subiquity-tui')())
  File "/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/cmd/", line 142, in main
  File "/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/client/", line 326, in run
  File "/snap/subiquity/2278/lib/python3.6/site-packages/subiquitycore/", line 338, in run
  File "/snap/subiquity/2278/lib/python3.6/site-packages/subiquitycore/", line 136, in run
    raise exc
  File "/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/ui/views/", line 184, in _wait
  File "/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/common/", line 436, in get_wait
    await self.client.errors.wait.GET(error_ref)
  File "/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/common/api/", line 47, in impl
    meth.__name__, path, json=data, params=query_args) as resp:
  File "/snap/subiquity/2278/lib/python3.6/site-packages/subiquitycore/", line 171, in __aenter__
    return await self.gen.__anext__()
  File "/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/common/api/", line 84, in make_request
    timeout=0) as response:
  File "/snap/subiquity/2278/lib/python3.6/site-packages/aiohttp/", line 1117, in __aenter__
    self._resp = await self._coro
  File "/snap/subiquity/2278/lib/python3.6/site-packages/aiohttp/", line 544, in _request
    await resp.start(conn)
  File "/snap/subiquity/2278/lib/python3.6/site-packages/aiohttp/", line 890, in start
    message, payload = await # type: ignore
  File "/snap/subiquity/2278/lib/python3.6/site-packages/aiohttp/", line 604, in read
    await self._waiter
aiohttp.client_exceptions.ServerDisconnectedError: Server disconnected
Connection to s1lp14 closed.

and at the console I've noticed:

"report saved to /var/crash/1623068073.935614824.ui.crash"
"Traceback (most recent call last):"
"File ""/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/client/client"
".py"", line 326, in run"
"File ""/snap/subiquity/2278/lib/python3.6/site-packages/subiquitycore/"","
"line 338, in run"
"File ""/snap/subiquity/2278/lib/python3.6/site-packages/subiquitycore/"","
"line 136, in run"
"raise exc"
"File ""/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/client/client"
".py"", line 257, in start"
"status = await self.connect()"
"File ""/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/client/client"
".py"", line 240, in connect"
"status = await self.client.meta.status.GET()"
"File ""/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/common/api/cl"
""", line 49, in impl"
"return serializer.deserialize(r_ann, await resp.json())"
"File ""/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/common/serial"
""", line 131, in deserialize"
"return self._deserialize_attr(annotation, value, metadata, path)"
"File ""/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/common/serial"
""", line 121, in _deserialize_attr"
"field, value[], path))"
"File ""/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/common/serial"
""", line 114, in _deserialize_field"
"field.type, value, field.metadata, path)"
"File ""/snap/subiquity/2278/lib/python3.6/site-packages/subiquity/common/serial"
""", line 138, in deserialize"
"return getattr(annotation, value)"
"File ""/snap/subiquity/2278/usr/lib/python3.6/"", line 326, in __getattr_"
"raise AttributeError(name) from None"
"AttributeError: CLOUD_INIT_WAIT"

I'll attache a plain text file with some more details
as well as a tgz with the entire content of /var/crash and /var log

After reconnecting to the installer SSH session I was finally able to complete the installation (and the installer was on the updated level).

Revision history for this message
Frank Heimes (fheimes) wrote :
Revision history for this message
Frank Heimes (fheimes) wrote :
Changed in ubuntu-z-systems:
importance: Undecided → High
assignee: nobody → Canonical Foundations Team (canonical-foundations)
Steve Langasek (vorlon)
tags: added: fr-1428
Revision history for this message
Frank Heimes (fheimes) wrote :

Retried today updating to latest/candidate and the snap update itself worked,
subiquity ui was (re-)started, but failed immediately after restart
and showed me a prompt (within the remaining of the ui).
Trying to run 'snap list subiquity' caused a crash then.
Sharing what I saw in my remote shell as well as a packages log/crash files ...

Manually reconnecting to the installer from remote via ssh after this allows to complete the installation based on the new installer.

Revision history for this message
Frank Heimes (fheimes) wrote :
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