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

[Frank Heimes]

Based on the recent ISO, QA Tracker and installation tests around the 24.04 release,
this issues got solved and it did not happened anymore with recent images, hence I'm closing this LP bug.

** Changed in: ubuntu-z-systems
       Status: Fix Committed => Fix Released

** Changed in: subiquity
       Status: Fix Committed => Fix Released

** Changed in: subiquity (Ubuntu)
       Status: Fix Committed => Fix Released

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

Status in subiquity:
  Fix Released
Status in Ubuntu on IBM z Systems:
  Fix Released
Status in subiquity package in Ubuntu:
  Fix Released

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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