Had a closer look at the crash file(s), and I'm not sure if the message
that was presented to me during the installation, after the crash is due
to the kind of optimistic approach and probing that is done during
installation ?!

But it actually never makes sense to do:
"
Running command ['fdasd', '--table', '/dev/nvme0n1'] with allowed return codes 
[0] (capture=False)
"
since it will always fail and end up like this:
"
 fdasd error:  device verification failed
 Partition '/dev/nvme0n1' (259/1) detected where device is required
"

However, two crashed happened during this installation, whereas one seems to be 
the known (LP#2056570) openssh-server case 
(1710264760.127559423.install_fail.crash):
 --------%<----------------%<----------------%<----------------%<--------
Title: install failed crashed with CalledProcessError
Traceback:
 Traceback (most recent call last):
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquity/server/controllers/install.py",
 line 625, in install
     await self.postinstall(context=context)
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquitycore/context.py", 
line 149, in decorated_async
     return await meth(self, **kw)
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquity/server/controllers/install.py",
 line 664, in postinstall
     await self.install_package(context=context, package=package.name)
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquitycore/context.py", 
line 149, in decorated_async
     return await meth(self, **kw)
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquity/server/controllers/install.py",
 line 725, in install_package
     await run_curtin_command(
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquity/server/curtin.py", 
line 230, in run_curtin_command
     return await cmd.wait()
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquity/server/curtin.py", 
line 125, in wait
     result = await self.runner.wait(self.proc)
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquity/server/runner.py", 
line 94, in wait
     raise subprocess.CalledProcessError(
 subprocess.CalledProcessError: Command '['systemd-run', '--wait', 
'--same-dir', '--property', 'SyslogIdentifier=subiquity_log.2553', '--setenv', 
'PATH=/snap/subiquity/5575/bin:/snap/subiquity/5575/usr/bin:/snap/subiquity/5575/bin:/snap/subiquity/5575/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/subiquity/5575/bin:/snap/subiquity/5575/sbin:/snap/subiquity/5575/bin:/snap/subiquity/5575/sbin',
 '--setenv', 
'PYTHONPATH=:/snap/subiquity/5575/lib/python3.10/site-packages:/snap/subiquity/5575/lib/python3.10/site-packages',
 '--setenv', 'PYTHON=/snap/subiquity/5575/usr/bin/python3.10', '--setenv', 
'SNAP=/snap/subiquity/5575', '--', '/snap/subiquity/5575/usr/bin/python3.10', 
'-m', 'curtin', '--showtrace', '-vvv', '--set', 'json:reporting={"subiquity": 
{"type": "journald", "identifier": "curtin_event.2553.10"}}', 'system-install', 
'-t', '/target', '--assume-downloaded', '--', 'openssh-server']' returned 
non-zero exit status 100.
 --------%<----------------%<----------------%<----------------%<--------
(which is separately handled)

and the other is a "UI crash" (?):
 --------%<----------------%<----------------%<----------------%<--------
Title: Installer UI crashed with ClientOSError
Traceback:
 Traceback (most recent call last):
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquity/client/client.py", 
line 402, in run
     await super().run()
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquitycore/tui.py", line 
351, in run
     await super().run()
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquitycore/core.py", line 
134, in run
     raise exc
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquity/client/client.py", 
line 505, in _select_initial_screen
     await self.client.meta.mark_configured.POST(endpoint_names)
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquity/common/api/client.py",
 line 47, in impl
     async with make_request(
   File "/snap/subiquity/5575/usr/lib/python3.10/contextlib.py", line 199, in 
__aenter__
     return await anext(self.gen)
   File 
"/snap/subiquity/5575/lib/python3.10/site-packages/subiquity/common/api/client.py",
 line 118, in make_request
     async with session.request(
   File "/snap/subiquity/5575/usr/lib/python3/dist-packages/aiohttp/client.py", 
line 1138, in __aenter__
     self._resp = await self._coro
   File "/snap/subiquity/5575/usr/lib/python3/dist-packages/aiohttp/client.py", 
line 559, in _request
     await resp.start(conn)
   File 
"/snap/subiquity/5575/usr/lib/python3/dist-packages/aiohttp/client_reqrep.py", 
line 898, in start
     message, payload = await protocol.read()  # type: ignore[union-attr]
   File 
"/snap/subiquity/5575/usr/lib/python3/dist-packages/aiohttp/streams.py", line 
616, in read
     await self._waiter
 aiohttp.client_exceptions.ClientOSError: [Errno 104] Connection reset by peer
 --------%<----------------%<----------------%<----------------%<--------
... but looks more like an issue with asynchronous io, no?

 --------%<----------------%<----------------%<----------------%<--------
subiquity-client-debug.log.2444-2024-03-12 17:32:14,116 INFO subiquity:130 
Starting Subiquity TUI revision 5575 of snap /snap/subiquity/5575
subiquity-client-debug.log.2444-2024-03-12 17:32:14,116 INFO subiquity:131 
Arguments passed: ['/snap/subiquity/5575/usr/bin/subiquity']
subiquity-client-debug.log.2444-2024-03-12 17:32:14,116 DEBUG subiquity:132 
Environment: environ({'PYTHONIOENCODING': 'utf-8', 'SNAP_COMMON': 
'/var/snap/subiquity/common', 'SNAP_INSTANCE_KEY': '', 'USER': 'root', 
'SNAP_UID': '0', 'PYTHONPATH_ORIG': '', 'SNAP_LIBRARY_PATH': 
'/var/lib/snapd/lib/gl:/var/lib/snapd/lib/gl32:/var/lib/snapd/void', 'PYTHON': 
'/snap/subiquity/5575/usr/bin/python3.10', 'SNAP_USER_DATA': 
'/root/snap/subiquity/5575', 'SUBIQUITY_ROOT': '/snap/subiquity/5575', 
'PYTHONIOENCODING_ORIG': '', 'SYSTEMD_EXEC_PID': '2444', 'SNAP_REVISION': 
'5575', 'JOURNAL_STREAM': '8:37240', 'SNAP_CONTEXT': 
'RUOSwITDKd-0wId3yOPg1N__m7eUzi6eODQx-w9xX9BSzVUjYO3M', 'PYTHON_ORIG': '', 
'SNAP_VERSION': '22.02.2+git2073.263520ad', 'TERM': 'linux', 
'SNAP_INSTANCE_NAME': 'subiquity', 'SUBIQUITY_ROOT_ORIG': '', 'PATH': 
'/snap/subiquity/5575/bin:/snap/subiquity/5575/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin',
 'INVOCATION_ID': '1949f3b06c9941769ae99f1a5f34a346', 'SNAP_DATA': 
'/var/snap/subiquity/5575', 'LANG': 'en_US.UTF-8', 'SNAP_ARCH': 's390x', 
'SNAP_COOKIE': 'RUOSwITDKd-0wId3yOPg1N__m7eUzi6eODQx-w9xX9BSzVUjYO3M', 
'SNAP_USER_COMMON': '/root/snap/subiquity/common', 'SNAP_REEXEC': '0', 
'SNAP_NAME': 'subiquity', 'PATH_ORIG': 
'/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin',
 'PWD': '/var/snap/subiquity/5575', 'SNAP_REAL_HOME': '/root', 'SNAP': 
'/snap/subiquity/5575', 'SNAP_EUID': '0', 'PYTHONPATH': 
'/snap/subiquity/5575/lib/python3.10/site-packages', 'APPORT_DATA_DIR': 
'/snap/subiquity/5575/share/apport'})
subiquity-client-debug.log.2444-2024-03-12 17:32:14,116 DEBUG asyncio:54 Using 
selector: EpollSelector
subiquity-client-debug.log.2444-2024-03-12 17:32:14,116 DEBUG 
subiquitycore.screen:129 KDGKBTYPE returned b'\x02', is_linux_tty True
subiquity-client-debug.log.2444-2024-03-12 17:32:15,199 DEBUG 
subiquitycore.core:118 starting controllers
subiquity-client-debug.log.2444-2024-03-12 17:32:15,199 DEBUG 
subiquitycore.core:121 controllers started
subiquity-client-debug.log.2444-2024-03-12 17:32:15,200 DEBUG 
subiquity/Progress/_wait_status:105 start: 
subiquity-client-debug.log.2444-2024-03-12 17:32:15,239 DEBUG 
subiquity.common.errorreport:398 generating crash report
subiquity-client-debug.log.2444:2024-03-12 17:32:15,242 INFO 
subiquity.common.errorreport:424 saving crash report 'Installer UI crashed with 
ClientOSError' to /var/crash/1710264735.239347935.ui.crash
subiquity-client-debug.log.2444-2024-03-12 17:32:15,242 INFO 
subiquity/ErrorReporter/1710264735.239347935.ui/add_info:105 start: 
subiquity-client-debug.log.2444:2024-03-12 17:32:15,384 INFO 
subiquity/ErrorReporter/1710264735.239347935.ui/add_info:110 finish: written to 
/var/crash/1710264735.239347935.ui.crash SUCCESS
subiquity-client-debug.log.2444-2024-03-12 17:32:15,386 DEBUG 
subiquity/Progress/_wait_status:110 finish: cancelled FAIL
--
subiquity-client-info.log.2444-2024-03-12 17:32:14,116 INFO subiquity:130 
Starting Subiquity TUI revision 5575 of snap /snap/subiquity/5575
subiquity-client-info.log.2444-2024-03-12 17:32:14,116 INFO subiquity:131 
Arguments passed: ['/snap/subiquity/5575/usr/bin/subiquity']
subiquity-client-info.log.2444:2024-03-12 17:32:15,242 INFO 
subiquity.common.errorreport:424 saving crash report 'Installer UI crashed with 
ClientOSError' to /var/crash/1710264735.239347935.ui.crash
subiquity-client-info.log.2444-2024-03-12 17:32:15,242 INFO 
subiquity/ErrorReporter/1710264735.239347935.ui/add_info:105 start: 
subiquity-client-info.log.2444:2024-03-12 17:32:15,384 INFO 
subiquity/ErrorReporter/1710264735.239347935.ui/add_info:110 finish: written to 
/var/crash/1710264735.239347935.ui.crash SUCCESS
 --------%<----------------%<----------------%<----------------%<--------

I'll update the bug title ...

** Summary changed:

- 24.04 install on NVMe drive crashes because fdasd is called
+ 24.04 install on s390x crashes due to an aio issue

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https://bugs.launchpad.net/bugs/2057696

Title:
  24.04 install on s390x crashes due to an aio issue

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