PyMDstat

A pythonic library to parse Linux /proc/mdstat file.

>>> from pymdstat import MdStat

>>> mds = MdStat() # Read the /proc/mdstat file

>>> mds
Personalities : [raid1] [raid6] [raid5] [raid4]
md1 : active raid1 sdb2[1] sda2[0]
      136448 blocks [2/2] [UU]

md2 : active raid1 sdb3[1] sda3[0]
      129596288 blocks [2/2] [UU]

md3 : active raid5 sdl1[9] sdk1[8] sdj1[7] sdi1[6] sdh1[5] sdg1[4] sdf1[3] sde1[2] sdd1[1] sdc1[0]
      1318680576 blocks level 5, 1024k chunk, algorithm 2 [10/10] [UUUUUUUUUU]

md0 : active raid1 sdb1[1] sda1[0]
      16787776 blocks [2/2] [UU]

unused devices: <none>

>>> mds.get_stats()
{'arrays': {'md0': {'available': '2',
   'components': {'sda1': '0', 'sdb1': '1'},
   'config': 'UU',
   'status': 'active',
   'type': 'raid1',
   'used': '2'},
  'md1': {'available': '2',
   'components': {'sda2': '0', 'sdb2': '1'},
   'config': 'UU',
   'status': 'active',
   'type': 'raid1',
   'used': '2'},
  'md2': {'available': '2',
   'components': {'sda3': '0', 'sdb3': '1'},
   'config': 'UU',
   'status': 'active',
   'type': 'raid1',
   'used': '2'},
  'md3': {'available': '10',
   'components': {'sdc1': '0',
    'sdd1': '1',
    'sde1': '2',
    'sdf1': '3',
    'sdg1': '4',
    'sdh1': '5',
    'sdi1': '6',
    'sdj1': '7',
    'sdk1': '8',
    'sdl1': '9'},
   'config': 'UUUUUUUUUU',
   'status': 'active',
   'type': 'raid5',
   'used': '10'}},
 'personalities': ['raid1', 'raid6', 'raid5', 'raid4']}

>>> mds.personalities()
['raid1', 'raid6', 'raid5', 'raid4']

>>> mds.arrays()
['md2', 'md3', 'md0', 'md1']

>>> mds.type('md3')
'raid6'

>>> mds.status('md3')
'active'

>>> mds.components('md3')
['sdk1', 'sdj1', 'sde1', 'sdl1', 'sdg1', 'sdf1', 'sdh1', 'sdc1', 'sdd1', 'sdi1']

>>> mds.available('md3')
10

>>> mds.used('md3')
10

>>> mds.config('md3')
'UUUUUUUUUU'