[Bug 2016860] Re: Error/crash while trying to wipe disk during 23.04 install

[Frank Heimes]

** Attachment added: "18032023_1.tgz"
   https://bugs.launchpad.net/ubuntu-z-systems/+bug/2016860/+attachment/5664963/+files/18032023_1.tgz

** Also affects: subiquity (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: subiquity (Ubuntu)
     Assignee: (unassigned) => Dan Bungert (dbungert)

** Changed in: ubuntu-z-systems
     Assignee: Dan Bungert (dbungert) => Frank Heimes (fheimes)

** Changed in: subiquity (Ubuntu)
   Importance: Undecided => High

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Title:
  Error/crash while trying to wipe disk during 23.04 install

Status in Ubuntu on IBM z Systems:
  New
Status in subiquity package in Ubuntu:
  New

Bug description:
  While testing the 23.04 RC image (timestamp April 15th)
  and using
  subiquity  23.04.1       4677
  on z/VM (s390x) with a DASD FBA disk,
  the installed crashed during installation with:

   devsync happy - path /dev/dasda now exists
   return volume path /dev/dasda
   Running command ['wipefs', '--all', '--force', '/dev/dasda'] with allowed retur
  n codes [0] (capture=False)
   Wiping path: dev:/dev/dasda1 kname:dasda1 partnum:1
   Running command ['wipefs', '--all', '--force', '/dev/dasda1'] with allowed retu
  rn codes [0] (capture=False)
   wipefs: error: /dev/dasda1: probing initialization failed: No such file or directory
   An error occured handling 'disk-dasda': ProcessExecutionError - Unexpected error while running command.
   Command: ['wipefs', '--all', '--force', '/dev/dasda1']
   Exit code: 1
   Reason: -
   Stdout: ''
   Stderr: ''
   finish: cmd-install/stage-partitioning/builtin/cmd-block-meta: FAIL: configuring disk: disk-dasda
   TIMED BLOCK_META: 17.898
   finish: cmd-install/stage-partitioning/builtin/cmd-block-meta: FAIL: curtin com
  mand block-meta
   Traceback (most recent call last):
     File "/snap/subiquity/4677/lib/python3.10/site-packages/curtin/commands/main.py", line 202, in main
       ret = args.func(args)
     File "/snap/subiquity/4677/lib/python3.10/site-packages/curtin/log.py", line 97, in wrapper
       return log_time("TIMED %s: " % msg, func, *args, **kwargs)
     File "/snap/subiquity/4677/lib/python3.10/site-packages/curtin/log.py", line 79, in log_time
       return func(*args, **kwargs)
     File "/snap/subiquity/4677/lib/python3.10/site-packages/curtin/commands/block_meta.py", line 124, in block_meta
       return meta_custom(args)
     File "/snap/subiquity/4677/lib/python3.10/site-packages/curtin/commands/block_meta.py", line 2191, in meta_custom
       handler(command, storage_config_dict, context)
     File "/snap/subiquity/4677/lib/python3.10/site-packages/curtin/commands/block_meta.py", line 768, in disk_handler
       block.wipe_volume(disk, mode=info.get('wipe'))
     File "/snap/subiquity/4677/lib/python3.10/site-packages/curtin/block/__init__.py", line 1324, in wipe_volume
       quick_zero(path, partitions=True, exclusive=exclusive)
     File "/snap/subiquity/4677/lib/python3.10/site-packages/curtin/block/__init__.py", line 1233, in quick_zero
       quick_zero(pt, partitions=False)
     File "/snap/subiquity/4677/lib/python3.10/site-packages/curtin/block/__init__.py", line 1214, in quick_zero
       util.subp(['wipefs', '--all', '--force', path])
     File "/snap/subiquity/4677/lib/python3.10/site-packages/curtin/util.py", line 275, in subp
       return _subp(*args, **kwargs)
     File "/snap/subiquity/4677/lib/python3.10/site-packages/curtin/util.py", line 139, in _subp
       raise ProcessExecutionError(stdout=out, stderr=err,
   curtin.util.ProcessExecutionError: Unexpected error while running command.
   Command: ['wipefs', '--all', '--force', '/dev/dasda1']
   Exit code: 1
   Reason: -
   Stdout: ''
   Stderr: ''
   Unexpected error while running command.
   Command: ['wipefs', '--all', '--force', '/dev/dasda1']
   Exit code: 1
   Reason: -
   Stdout: ''

  The DASD FBA disk exists:

  root at ubuntu-server:/# lsdasd
  Bus-ID    Status    Name      Device  Type         BlkSz  Size      Blocks
  ================================================================================
  0.0.0101  active    dasda     94:0    FBA          512    16383MB   33554368
  root at ubuntu-server:/# ls -l /dev/dasd*
  crw------- 1 root root 10, 120 Apr 18 10:31 /dev/dasd_eer
  brw-rw---- 1 root disk 94,   0 Apr 18 10:35 /dev/dasda
  brw-rw---- 1 root disk 94,   1 Apr 18 10:35 /dev/dasda1
  root at ubuntu-server:/#

  But the installer seems to fail wiping it.

  The full logs (var/crash and /var/log) are attached.

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