[Bug 2140453] Re: [Ubuntu26.04] [FW1110] : Reinstallation on Ubuntu Lpar crashed with "partitioning crashed with CurtinInstallError"!

Olivier Gayot 2140453 at bugs.launchpad.net
Thu Feb 5 13:04:28 UTC 2026 

Thank you for your bug report.

The logs attached are from an installation done in September 2024. Would
you check and re-upload the logs, please?

Thank you!

** Changed in: subiquity (Ubuntu)
       Status: New => Incomplete

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Title:
  [Ubuntu26.04] [FW1110] : Reinstallation on Ubuntu Lpar crashed with
  "partitioning crashed with CurtinInstallError"!

Status in The Ubuntu-power-systems project:
  New
Status in subiquity package in Ubuntu:
  Incomplete

Bug description:
  HOST ENV:
  OS : Ubuntu26.04

  I installed ubuntu26.04 some days ago, I tried doing reinstallation on
  the same lpar  and it is crashing with the following crash. This
  installation I tried with latest iso present in the daily builds.

  
  2026-02-05 01:31:28,011 ERROR root:38 finish: subiquity/Install/install/curtin_install/run_curtin_step/cmd-install/stage-partitioning/builtin/cmd-block-meta: FAIL: curtin command block-meta
  2026-02-05 01:31:28,011 ERROR root:38 finish: subiquity/Install/install/curtin_install/run_curtin_step/cmd-install/stage-partitioning/builtin: FAIL: running 'curtin block-meta simple'
  2026-02-05 01:31:28,011 ERROR root:38 finish: subiquity/Install/install/curtin_install/run_curtin_step/cmd-install/stage-partitioning: FAIL: configuring storage
  2026-02-05 01:31:29,037 ERROR root:38 finish: subiquity/Install/install/curtin_install/run_curtin_step: FAIL:
  2026-02-05 01:31:29,037 ERROR root:38 finish: subiquity/Install/install/curtin_install: FAIL:
  2026-02-05 01:31:29,041 INFO subiquity.common.errorreport:412 saving crash report 'partitioning crashed with CurtinInstallError' to /var/crash/1770255089.037806273.install_fail.crash
  2026-02-05 01:31:29,041 ERROR root:38 finish: subiquity/Install/install: FAIL:
  2026-02-05 01:31:29,041 INFO root:38 start: subiquity/ErrorReporter/1770255089.037806273.install_fail/add_info:
  2026-02-05 01:31:29,041 ERROR subiquity.server.server:535 top level error
  Traceback (most recent call last):
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquity/server/controllers/install.py", line 249, in run_curtin_step
      await run_curtin_command(
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquity/server/curtin.py", line 244, in run_curtin_command
      return await cmd.wait(input=input)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquity/server/curtin.py", line 125, in wait
      result = await self.runner.wait(self.proc, input=input)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquity/server/runner.py", line 112, in wait
      raise subprocess.CalledProcessError(
  subprocess.CalledProcessError: Command '['systemd-run', '--wait', '--same-dir', '--property', 'SyslogIdentifier=subiquity_log.9951', '--setenv', 'PATH=/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin:/snap/subiquity/7010/bin:/snap/subiquity/7010/sbin', '--setenv', 'PYTHONPATH=:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages:/snap/subiquity/7010/lib/python3.12/site-packages', '--setenv', 'PYTHON=/snap/subiquity/7010/usr/bin/python3.12', '--setenv', 'SNAP=/snap/subiquity/7010', '--', '/snap/subiquity/7010/usr/bin/python3.12', '-m', 'curtin', '--showtrace', '-vvv', '--set', 'json:reporting={"subiquity": {"type": "journald", "identifier": "curtin_event.9951.5"}}', '-c', '/var/log/installer/curtin-install/subiquity-partitioning.conf', 'install', '--set', 'json:stages=["partitioning"]', 'cp:///tmp/tmp_3tpd_zr/mount']' returned non-zero exit status 3.

  During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquity/server/controllers/shutdown.py", line 72, in _wait_install
      await self.app.controllers.Install.install_task
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquitycore/context.py", line 165, in decorated_async
      return await meth(self, **kw)
             ^^^^^^^^^^^^^^^^^^^^^^
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquity/server/controllers/install.py", line 642, in install
      await self.curtin_install(context=context, source=for_install_path)
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquitycore/context.py", line 165, in decorated_async
      return await meth(self, **kw)
             ^^^^^^^^^^^^^^^^^^^^^^
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquity/server/controllers/install.py", line 424, in curtin_install
      await run_curtin_step(
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquity/server/controllers/install.py", line 362, in run_curtin_step
      await self.run_curtin_step(
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquitycore/context.py", line 165, in decorated_async
      return await meth(self, **kw)
             ^^^^^^^^^^^^^^^^^^^^^^
    File "/snap/subiquity/7010/lib/python3.12/site-packages/subiquity/server/controllers/install.py", line 260, in run_curtin_step
      raise CurtinInstallError(stages=stages)
  subiquity.server.controllers.install.CurtinInstallError
  2026-02-05 01:31:29,043 INFO root:38 finish: subiquity/Meta/status_GET: SUCCESS: 200 {"state": "ERROR", "confirming_tty": "/dev/hvc0", "error": {"state": "INCOMPL...
  2026-02-05 01:31:29,043 INFO root:38 finish: subiquity/Meta/status_GET: SUCCESS: 200 {"state": "ERROR", "confirming_tty": "/dev/hvc0", "error": {"state": "INCOMPL...
  2026-02-05 01:31:29,047 INFO root:38 start: subiquity/Meta/status_GET:
  2026-02-05 01:31:29,049 INFO root:38 start: subiquity/Meta/status_GET:
  2026-02-05 01:31:29,062 INFO root:38 start: subiquity/Error/wait_GET:
  2026-02-05 01:31:29,065 INFO root:38 start: subiquity/Error/wait_GET:
  2026-02-05 01:31:29,250 INFO root:38 finish: subiquity/ErrorReporter/1770255089.037806273.install_fail/add_info: SUCCESS: written to /var/crash/1770255089.037806273.install_fail.crash
  2026-02-05 01:31:29,250 INFO root:38 finish: subiquity/Error/wait_GET: SUCCESS: 200 {"state": "DONE", "base": "1770255089.037806273.install_fail", "kind": "INSTA...
  2026-02-05 01:31:29,251 INFO root:38 finish: subiquity/Error/wait_GET: SUCCESS: 200 {"state": "DONE", "base": "1770255089.037806273.install_fail", "kind": "INSTA...
  2026-02-05 01:31:29,261 ERROR root:38 finish: subiquity/Install/install/curtin_install/run_curtin_step/cmd-install: FAIL: curtin command install
  2026-02-05 01:32:09,688 INFO root:38 start: subiquity/Meta/ssh_info_GET:
  2026-02-05 01:32:09,705 INFO root:38 finish: subiquity/Meta/ssh_info_GET: SUCCESS: 200 {"username": "installer", "password_kind": "KNOWN", "password": "8ScRxUzqE3a7...

  
  This is the disk I am installing on which already had ubuntu26.04

  sdb                         8:16   0   400G  0 disk
  |-sdb1                      8:17   0     8M  0 part
  |-sdb2                      8:18   0     2G  0 part
  `-sdb3                      8:19   0   398G  0 part
    `-ubuntu--vg-ubuntu--lv 252:0    0   100G  0 lvm

  This crash is happening when the installation process starts after
  choosing storage, giving username password.

  Attachment contains all the logs for the subiquity and curtin crash.

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