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== Comment: - Anushree Mathur ==
OS: 24.04 LTS (Noble Numbat)
I started the Ubuntu installation for 24.04 LTS (Noble Numbat) on L1(HOST) 
having SAN disk, it failed with the following error just after I chose the disk.

Ubuntu 24.04 LTS ubuntu-server hvc0


connecting...  
waiting for cloud-init...  
generating crash report
report saved to /var/crash/1724388235.797082424.ui.crash
Traceback (most recent call last):
  File 
"/snap/subiquity/5745/lib/python3.10/site-packages/subiquity/client/controllers/filesystem.py",
 line 273, in _guided_choice
    self.ui.set_body(FilesystemView(self.model, self))
  File 
"/snap/subiquity/5745/lib/python3.10/site-packages/subiquity/ui/views/filesystem/filesystem.py",
 line 485, in __init__
    self.refresh_model_inputs()
  File 
"/snap/subiquity/5745/lib/python3.10/site-packages/subiquity/ui/views/filesystem/filesystem.py",
 line 540, in refresh_model_inputs
    self.avail_list.refresh_model_inputs()
  File 
"/snap/subiquity/5745/lib/python3.10/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/5745/lib/python3.10/site-packages/subiquity/ui/views/filesystem/helpers.py",
 line 32, in summarize_device
    anns = labels.annotations(device) + labels.usage_labels(device)
  File "/snap/subiquity/5745/usr/lib/python3.10/functools.py", line 889, in 
wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File 
"/snap/subiquity/5745/lib/python3.10/site-packages/subiquity/common/filesystem/labels.py",
 line 100, 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/5745/usr/bin/subiquity", line 8, in <module>
    sys.exit(main())
  File 
"/snap/subiquity/5745/lib/python3.10/site-packages/subiquity/cmd/tui.py", line 
158, in main
    asyncio.run(run_with_loop())
  File "/snap/subiquity/5745/usr/lib/python3.10/asyncio/runners.py", line 44, 
in run
    return loop.run_until_complete(main)
  File "/snap/subiquity/5745/usr/lib/python3.10/asyncio/base_events.py", line 
649, in run_until_complete
    return future.result()
  File 
"/snap/subiquity/5745/lib/python3.10/site-packages/subiquity/cmd/tui.py", line 
156, in run_with_loop
    await subiquity_interface.run()
  File 
"/snap/subiquity/5745/lib/python3.10/site-packages/subiquity/client/client.py", 
line 403, in run
    await super().run()
  File 
"/snap/subiquity/5745/lib/python3.10/site-packages/subiquitycore/tui.py", line 
351, in run
    await super().run()
  File 
"/snap/subiquity/5745/lib/python3.10/site-packages/subiquitycore/core.py", line 
134, in run
    raise exc
RuntimeError: coroutine raised StopIteration

Ubuntu 24.04 LTS ubuntu-server hvc0


connecting...  
ProblemType: Bug
Architecture: ppc64el
CrashDB: {'impl': 'launchpad', 'project': 'subiquity'}

I tried following 2 installation methods, it is failing in both the ways: 
1) kexec method
2) attaching vdvd and starting installer

NOTE: It is happening only when the system has SAN disks otherwise this 
installation worked fine.
I will be attaching the crash report for this!

== Comment:- Hariharan T S ==
Verified the following cases. 
Installation on Disk from VIOS  - PASSED
Installatoin on Disk from VIOS and system had Disks from SAN - FAILED
Installation on Disk from SAN and system ahd Disk from VIOS - FAILED

== Comment:- Vaibhav Jain ==
Problem seems to happening when Subuquity enters the disk partition view. The 
system has a SAN disk and an existing Mullti Path DM volume on it.

Mirroring to distro

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
         Status: New


** Tags: architecture-ppc64le bugnameltc-208604 severity-high 
targetmilestone-inin---
-- 
ubuntu installation failing for systems having SAN disk
https://bugs.launchpad.net/bugs/2080474
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