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Viewing changes to hooks/charmhelpers/contrib/storage/linux/utils.py

  • Committer: yolanda.robla at canonical
  • Date: 2014-02-18 11:37:37 UTC
  • mto: This revision was merged to the branch mainline in revision 25.
  • Revision ID: yolanda.robla@canonical.com-20140218113737-eaaui547jl4sevle
add contrib.storage to charmhelpers

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hooks/charmhelpers/contrib/storage/linux/utils.py
 
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from os import stat
 
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from stat import S_ISBLK
 
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from subprocess import (
 
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    check_call
 
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)
 
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def is_block_device(path):
 
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    '''
 
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    Confirm device at path is a valid block device node.
 
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    :returns: boolean: True if path is a block device, False if not.
 
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    '''
 
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    return S_ISBLK(stat(path).st_mode)
 
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def zap_disk(block_device):
 
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    '''
 
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    Clear a block device of partition table. Relies on sgdisk, which is
 
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    installed as pat of the 'gdisk' package in Ubuntu.
 
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    :param block_device: str: Full path of block device to clean.
 
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    '''
 
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    check_call(['sgdisk', '--zap-all', '--mbrtogpt', block_device])