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[Paride Legovini <1882798@xxxxxxxxxxxxxxxxxx>]

Hi and thanks for reporting this bug.

The problem is with the get_grub_root() function defined in the curtin-
hooks.py file [1], which is part of the CentOS 6 MAAS image. I don't
think there is anything that should be fixed on the curtin side. I am
marking the curtin task as Invalid and adding a maas-images task.

[1] https://git.launchpad.net/maas-images/tree/curtin/centos6/curtin-
hooks.py#n190


** Also affects: maas-images
   Importance: Undecided
       Status: New

** Changed in: curtin
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1882798

Title:
  Can't deploy CentOS 6 with xfs filesystem

Status in curtin:
  Invalid
Status in MAAS:
  New
Status in maas-images:
  New

Bug description:
  Deployment of CentOS 6 fails when defining xfs partitions. It works fine under CentOS 7.
  The following error message appears in the log:

  Running command ['/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks'] with allowed return codes [0] (capture=False)
  Traceback (most recent call last):
    File "/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks.py", line 393, in <module>
      main()
    File "/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks.py", line 376, in main
      grub_root = get_grub_root(target)
    File "/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks.py", line 208, in get_grub_root
      return regex.groups()[0]
  AttributeError: 'NoneType' object has no attribute 'groups'
  finish: cmd-install/stage-curthooks/builtin/cmd-curthooks: FAIL: curtin command curthooks
  Traceback (most recent call last):
    File "/curtin/curtin/commands/main.py", line 202, in main
      ret = args.func(args)
    File "/curtin/curtin/commands/curthooks.py", line 1616, in curthooks
      if util.run_hook_if_exists(target, 'curtin-hooks'):
    File "/curtin/curtin/util.py", line 895, in run_hook_if_exists
      subp([target_hook])
    File "/curtin/curtin/util.py", line 275, in subp
      return _subp(*args, **kwargs)
    File "/curtin/curtin/util.py", line 141, in _subp
      cmd=args)
  curtin.util.ProcessExecutionError: Unexpected error while running command.
  Command: ['/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks']
  Exit code: 1
  Reason: -
  Stdout: ''
  Stderr: ''
  Unexpected error while running command.
  Command: ['/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks']
  Exit code: 1
  Reason: -
  Stdout: ''
  Stderr: ''
  curtin: Installation failed with exception: Unexpected error while running command.
  Command: ['curtin', 'curthooks']
  Exit code: 3
  Reason: -
  Stdout: start: cmd-install/stage-curthooks/builtin/cmd-curthooks: curtin command curthooks
          running /tmp/tmpgrmx7o0g/target/curtin/curtin-hooks
          Running command ['/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks'] with allowed return codes [0] (capture=False)
          Traceback (most recent call last):
            File "/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks.py", line 393, in <module>
              main()
            File "/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks.py", line 376, in main
              grub_root = get_grub_root(target)
            File "/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks.py", line 208, in get_grub_root
              return regex.groups()[0]
          AttributeError: 'NoneType' object has no attribute 'groups'
          finish: cmd-install/stage-curthooks/builtin/cmd-curthooks: FAIL: curtin command curthooks
          Traceback (most recent call last):
            File "/curtin/curtin/commands/main.py", line 202, in main
              ret = args.func(args)
            File "/curtin/curtin/commands/curthooks.py", line 1616, in curthooks
              if util.run_hook_if_exists(target, 'curtin-hooks'):
            File "/curtin/curtin/util.py", line 895, in run_hook_if_exists
              subp([target_hook])
            File "/curtin/curtin/util.py", line 275, in subp
              return _subp(*args, **kwargs)
            File "/curtin/curtin/util.py", line 141, in _subp
              cmd=args)
          curtin.util.ProcessExecutionError: Unexpected error while running command.
          Command: ['/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks']
          Exit code: 1
          Reason: -
          Stdout: ''
          Stderr: ''
          Unexpected error while running command.
          Command: ['/tmp/tmpgrmx7o0g/target/curtin/curtin-hooks']
          Exit code: 1
          Reason: -
          Stdout: ''
          Stderr: ''
          
  Stderr: ''

  I'm using MAAS versin 2.7.1

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