Comment 1 for bug 2133480

... and I assume it's the same reason why I cannot connect to Launchpad via
the launchpadlib API

Error accessing Launchpad!
 (403, b'Forbidden')

On Mon, Dec 1, 2025 at 6:09 AM Launchpad Bug Tracker <
<email address hidden>> wrote:

> bugproxy (bugproxy) has assigned this bug to your team "Ubuntu on IBM
> Power Systems Bug Triage" for Ubuntu:
>
> == Comment: #0 - Anushree Mathur <email address hidden> - 2025-11-28
> 03:12:11 ==
> ENV :
> HOST OS : Ubuntu 25.10
>
> Host installation is crashing with following crash when we do
> installation on multiple[2 or more] SAN disks and we see -EBUSY error
> with specific mpath disk.
>
> generating crash report
> report saved to /var/crash/1760429899.735880613.ui.crash
> Traceback (most recent call last):
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquity/client/controllers/filesystem.py",
> line 296, in _guided_choice
> self.ui.set_body(FilesystemView(self.model, self))
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquity/ui/views/filesystem/filesystem.py",
> line 485, in __init__
> self.refresh_model_inputs()
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquity/ui/views/filesystem/filesystem.py",
> line 544, in refresh_model_inputs
> self.used_list.refresh_model_inputs()
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquity/ui/views/filesystem/filesystem.py",
> line 417, in refresh_model_inputs
> for obj, cells in summarize_device(device, filter):
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquity/ui/views/filesystem/helpers.py",
> line 32, in summarize_device
> anns = labels.annotations(device) + labels.usage_labels(device)
> ^^^^^^^^^^^^^^^^^^^^^^^^^^
> File "/snap/subiquity/6868/usr/lib/python3.12/functools.py", line 909,
> in wrapper
> return dispatch(args[0].__class__)(*args, **kw)
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquity/common/filesystem/labels.py",
> line 101, in _annotations_vg
> member = next(iter(vg.devices))
> ^^^^^^^^^^^^^^^^^^^^^^
> StopIteration
>
> The above exception was the direct cause of the following exception:
>
> Traceback (most recent call last):
> File "/snap/subiquity/6868/usr/bin/subiquity", line 8, in <module>
> sys.exit(main())
> ^^^^^^
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquity/cmd/tui.py",
> line 161, in main
> asyncio.run(run_with_loop())
> File "/snap/subiquity/6868/usr/lib/python3.12/asyncio/runners.py", line
> 194, in run
> return runner.run(main)
> ^^^^^^^^^^^^^^^^
> File "/snap/subiquity/6868/usr/lib/python3.12/asyncio/runners.py", line
> 118, in run
> return self._loop.run_until_complete(task)
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> File "/snap/subiquity/6868/usr/lib/python3.12/asyncio/base_events.py",
> line 687, in run_until_complete
> return future.result()
> ^^^^^^^^^^^^^^^
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquity/cmd/tui.py",
> line 159, in run_with_loop
> await subiquity_interface.run()
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquity/client/client.py",
> line 426, in run
> await super().run()
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquitycore/tui.py",
> line 390, in run
> await super().run()
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquitycore/core.py",
> line 133, in run
> raise exc
> File
> "/snap/subiquity/6868/lib/python3.12/site-packages/subiquity/client/controllers/filesystem.py",
> line 300, in show_guided_and_redraw
> await self._guided_choice(choice)
> RuntimeError: coroutine raised StopIteration
>
> ^[[29;1R^[[29;106R
> Ubuntu Questing Quokka (development branch) ubuntu-server hvc
>
>
> Explaining whole scenario:
>
> When I tried to install my P11 lpar with Ubuntu with SAN disk
> 1) 4 SAN disks are there
> 2) I installed on mpatha (installation worked fine)
> 3) I installed on mpathb (installation worked fine)
> 4) When i rebooted the system connected to the console and then I tried to
> reinstall the system it gave the error message [-EBUSY] and then
> installation crashed
>
> My analysis:
>
> In the background, after each boot I was entering the shell and was
> checking for the multipath status:
> 1) In the first attempt when i checked it gave all four disks
> 2) After mpatha installation also all disks were listed in multipath -ll
> 3) After mpathb installation also all disks were there
> 4) When I tried the reinstallation after this I saw that multipath service
> itself gave the error as :
>
> [2168]: updated bindings file /etc/multipath/bindings
> [2168]: mpathb: addmap [0 230686720 multipath 1 queue_if_no_path 1 alua 2
> 1 ser>
> [2168]: libdevmapper: ioctl/libdm-iface.c(1995): device-mapper: reload
> ioctl on>
> [2168]: dm_addmap: libdm task=0 error: Device or resource busy
> [2168]: mpathb: ignoring map
> [2168]: mpathb: addmap [0 230686720 multipath 1 queue_if_no_path 1 alua 2
> 1 ser>
> [2168]: libdevmapper: ioctl/libdm-iface.c(1995): device-mapper: reload
> ioctl on>
> [2168]: dm_addmap: libdm task=0 error: Device or resource busy
> [2168]: mpathb: ignoring map
> : Started multipathd.service - Device-Mapper Multipath Device Controller.
>
> 5) With multipath -ll I was not able to see mpathb there
> 6) multipath service is not failing to restart but it is throwing this
> error message because mapping is not happening properly!
> I feel because of some stale metadata present on the mapathb at the time
> of installation which shouldn't have been there, it has happened.
>
>
> I tried this exact same scenario even on my P10 lpar which had 2 disks and
> I observed same kind of behavior!
>
> Reproducibility with this exact scenario is 95%.
> Reference bug is https://bugzilla.linux.ibm.com/show_bug.cgi?id=208604
> but now the scenario has been changed!
>
> ** Affects: ubuntu
> Importance: Undecided
> Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
> Status: New
>
>
> ** Tags: architecture-ppc64le bugnameltc-216529 severity-high
> targetmilestone-inin2604
> --
> Ubuntu25.10: Ubuntu host installation is failing while doing installation
> on multiple[2 or more] multipath SAN disks!
> https://bugs.launchpad.net/bugs/2133480
> You received this bug notification because you are a member of Ubuntu on
> IBM Power Systems Bug Triage, which is a bug assignee.
>